phy: Add Tegra XUSB pad controller support

Add a new driver for the XUSB pad controller found on NVIDIA Tegra SoCs.
This hardware block used to be exposed as a pin controller, but it turns
out that this isn't a good fit. The new driver and DT binding much more
accurately describe the hardware and are more flexible in supporting new
SoC generations.

Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

7 files changed, 3211 insertions, 0 deletions

diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 26566db09de0..27e5f6ee9a2a 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -421,4 +421,6 @@ config PHY_CYGNUS_PCIE
 	  Enable this to support the Broadcom Cygnus PCIe PHY.
 	  If unsure, say N.
 
+source "drivers/phy/tegra/Kconfig"
+
 endmenu
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 24596a96a887..d4f06e69fd9a 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -52,3 +52,5 @@ obj-$(CONFIG_PHY_TUSB1210)		+= phy-tusb1210.o
 obj-$(CONFIG_PHY_BRCMSTB_SATA)		+= phy-brcmstb-sata.o
 obj-$(CONFIG_PHY_PISTACHIO_USB)		+= phy-pistachio-usb.o
 obj-$(CONFIG_PHY_CYGNUS_PCIE)		+= phy-bcm-cygnus-pcie.o
+
+obj-$(CONFIG_ARCH_TEGRA) += tegra/
diff --git a/drivers/phy/tegra/Kconfig b/drivers/phy/tegra/Kconfig
new file mode 100644
index 000000000000..a3b1de953fb7
--- /dev/null
+++ b/drivers/phy/tegra/Kconfig
@@ -0,0 +1,8 @@
+config PHY_TEGRA_XUSB
+	tristate "NVIDIA Tegra XUSB pad controller driver"
+	depends on ARCH_TEGRA
+	help
+	  Choose this option if you have an NVIDIA Tegra SoC.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called phy-tegra-xusb.
diff --git a/drivers/phy/tegra/Makefile b/drivers/phy/tegra/Makefile
new file mode 100644
index 000000000000..31150b4337cd
--- /dev/null
+++ b/drivers/phy/tegra/Makefile
@@ -0,0 +1,5 @@
+obj-$(CONFIG_PHY_TEGRA_XUSB) += phy-tegra-xusb.o
+
+phy-tegra-xusb-y += xusb.o
+phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_124_SOC) += xusb-tegra124.o
+phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_132_SOC) += xusb-tegra124.o
diff --git a/drivers/phy/tegra/xusb-tegra124.c b/drivers/phy/tegra/xusb-tegra124.c
new file mode 100644
index 000000000000..119957249a51
--- /dev/null
+++ b/drivers/phy/tegra/xusb-tegra124.c
@@ -0,0 +1,1752 @@
+/*
+ * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/mailbox_client.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
+#include <linux/slab.h>
+
+#include <soc/tegra/fuse.h>
+
+#include "xusb.h"
+
+#define FUSE_SKU_CALIB_HS_CURR_LEVEL_PADX_SHIFT(x) ((x) ? 15 : 0)
+#define FUSE_SKU_CALIB_HS_CURR_LEVEL_PAD_MASK 0x3f
+#define FUSE_SKU_CALIB_HS_IREF_CAP_SHIFT 13
+#define FUSE_SKU_CALIB_HS_IREF_CAP_MASK 0x3
+#define FUSE_SKU_CALIB_HS_SQUELCH_LEVEL_SHIFT 11
+#define FUSE_SKU_CALIB_HS_SQUELCH_LEVEL_MASK 0x3
+#define FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_SHIFT 7
+#define FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_MASK 0xf
+
+#define XUSB_PADCTL_USB2_PORT_CAP 0x008
+#define XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_SHIFT(x) ((x) * 4)
+#define XUSB_PADCTL_USB2_PORT_CAP_PORT_CAP_MASK 0x3
+#define XUSB_PADCTL_USB2_PORT_CAP_DISABLED 0x0
+#define XUSB_PADCTL_USB2_PORT_CAP_HOST 0x1
+#define XUSB_PADCTL_USB2_PORT_CAP_DEVICE 0x2
+#define XUSB_PADCTL_USB2_PORT_CAP_OTG 0x3
+
+#define XUSB_PADCTL_SS_PORT_MAP 0x014
+#define XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(x) (1 << (((x) * 4) + 3))
+#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_SHIFT(x) ((x) * 4)
+#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(x) (0x7 << ((x) * 4))
+#define XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(x, v) (((v) & 0x7) << ((x) * 4))
+#define XUSB_PADCTL_SS_PORT_MAP_PORT_MAP_MASK 0x7
+
+#define XUSB_PADCTL_ELPG_PROGRAM 0x01c
+#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 26)
+#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 25)
+#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN (1 << 24)
+#define XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_VCORE_DOWN(x) (1 << (18 + (x) * 4))
+#define XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN_EARLY(x) \
+							(1 << (17 + (x) * 4))
+#define XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(x) (1 << (16 + (x) * 4))
+
+#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1 0x040
+#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET (1 << 19)
+#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK (0xf << 12)
+#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST (1 << 1)
+
+#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2 0x044
+#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN (1 << 6)
+#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN (1 << 5)
+#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL (1 << 4)
+
+#define XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(x) (0x058 + (x) * 4)
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_SHIFT 24
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_MASK 0xff
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_VAL 0x24
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT 16
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_MASK 0x3f
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT 8
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_MASK 0x3f
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_SHIFT 8
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_MASK 0xffff
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_VAL 0xf070
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_SHIFT 4
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_MASK 0xf
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_VAL 0xf
+
+#define XUSB_PADCTL_IOPHY_USB3_PADX_CTL4(x) (0x068 + (x) * 4)
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT 24
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_MASK 0x1f
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT 16
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_MASK 0x7f
+#define XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_VAL 0x002008ee
+
+#define XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL2(x) ((x) < 2 ? 0x078 + (x) * 4 : \
+					       0x0f8 + (x) * 4)
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_SHIFT 28
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_MASK 0x3
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_VAL 0x1
+
+#define XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL5(x) ((x) < 2 ? 0x090 + (x) * 4 : \
+					       0x11c + (x) * 4)
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL5_RX_QEYE_EN (1 << 8)
+
+#define XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL6(x) ((x) < 2 ? 0x098 + (x) * 4 : \
+					       0x128 + (x) * 4)
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT 24
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_G_Z_MASK 0x3f
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_TAP_MASK 0x1f
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_AMP_MASK 0x7f
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT 16
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK 0xff
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_G_Z 0x21
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_TAP 0x32
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_AMP 0x33
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_CTLE_Z 0x48
+#define XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_LATCH_G_Z 0xa1
+
+#define XUSB_PADCTL_USB2_OTG_PADX_CTL0(x) (0x0a0 + (x) * 4)
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD_ZI (1 << 21)
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD2 (1 << 20)
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD (1 << 19)
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_SHIFT 14
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_MASK 0x3
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_VAL(x) ((x) ? 0x0 : 0x3)
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_SHIFT 6
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_MASK 0x3f
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_VAL 0x0e
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT 0
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_MASK 0x3f
+
+#define XUSB_PADCTL_USB2_OTG_PADX_CTL1(x) (0x0ac + (x) * 4)
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_SHIFT 9
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_MASK 0x3
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT 3
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_MASK 0x7
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DR (1 << 2)
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DISC_FORCE_POWERUP (1 << 1)
+#define XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_CHRP_FORCE_POWERUP (1 << 0)
+
+#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0 0x0b8
+#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD (1 << 12)
+#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT 2
+#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_MASK 0x7
+#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_VAL 0x5
+#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT 0
+#define XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_MASK 0x3
+
+#define XUSB_PADCTL_HSIC_PADX_CTL0(x) (0x0c0 + (x) * 4)
+#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_SHIFT 12
+#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_MASK 0x7
+#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_SHIFT 8
+#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_MASK 0x7
+#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_SHIFT 4
+#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_MASK 0x7
+#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_SHIFT 0
+#define XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_MASK 0x7
+
+#define XUSB_PADCTL_HSIC_PADX_CTL1(x) (0x0c8 + (x) * 4)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_RPU_STROBE (1 << 10)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_RPU_DATA (1 << 9)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_RPD_STROBE (1 << 8)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_RPD_DATA (1 << 7)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_PD_ZI (1 << 5)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_PD_RX (1 << 4)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_PD_TRX (1 << 3)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_PD_TX (1 << 2)
+#define XUSB_PADCTL_HSIC_PAD_CTL1_AUTO_TERM_EN (1 << 0)
+
+#define XUSB_PADCTL_HSIC_PADX_CTL2(x) (0x0d0 + (x) * 4)
+#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT 4
+#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_MASK 0x7
+#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT 0
+#define XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_MASK 0x7
+
+#define XUSB_PADCTL_HSIC_STRB_TRIM_CONTROL 0x0e0
+#define XUSB_PADCTL_HSIC_STRB_TRIM_CONTROL_STRB_TRIM_MASK 0x1f
+
+#define XUSB_PADCTL_USB3_PAD_MUX 0x134
+#define XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(x) (1 << (1 + (x)))
+#define XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(x) (1 << (6 + (x)))
+
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1 0x138
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET (1 << 27)
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE (1 << 24)
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_SHIFT 20
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_MASK 0x3
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD (1 << 3)
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST (1 << 1)
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ (1 << 0)
+
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2 0x13c
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_SHIFT 20
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_MASK 0xf
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_SHIFT 16
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_MASK 0xf
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_TCLKOUT_EN (1 << 12)
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_TXCLKREF_SEL (1 << 4)
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_SHIFT 0
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_MASK 0x7
+
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL3 0x140
+#define XUSB_PADCTL_IOPHY_PLL_S0_CTL3_RCAL_BYPASS (1 << 7)
+
+#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1 0x148
+#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD (1 << 1)
+#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ (1 << 0)
+
+#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL2 0x14c
+
+#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL5 0x158
+
+#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL6 0x15c
+
+struct tegra124_xusb_fuse_calibration {
+	u32 hs_curr_level[3];
+	u32 hs_iref_cap;
+	u32 hs_term_range_adj;
+	u32 hs_squelch_level;
+};
+
+struct tegra124_xusb_padctl {
+	struct tegra_xusb_padctl base;
+
+	struct tegra124_xusb_fuse_calibration fuse;
+};
+
+static inline struct tegra124_xusb_padctl *
+to_tegra124_xusb_padctl(struct tegra_xusb_padctl *padctl)
+{
+	return container_of(padctl, struct tegra124_xusb_padctl, base);
+}
+
+static int tegra124_xusb_padctl_enable(struct tegra_xusb_padctl *padctl)
+{
+	u32 value;
+
+	mutex_lock(&padctl->lock);
+
+	if (padctl->enable++ > 0)
+		goto out;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	usleep_range(100, 200);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	usleep_range(100, 200);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+out:
+	mutex_unlock(&padctl->lock);
+	return 0;
+}
+
+static int tegra124_xusb_padctl_disable(struct tegra_xusb_padctl *padctl)
+{
+	u32 value;
+
+	mutex_lock(&padctl->lock);
+
+	if (WARN_ON(padctl->enable == 0))
+		goto out;
+
+	if (--padctl->enable > 0)
+		goto out;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	usleep_range(100, 200);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	usleep_range(100, 200);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+out:
+	mutex_unlock(&padctl->lock);
+	return 0;
+}
+
+static int tegra124_usb3_save_context(struct tegra_xusb_padctl *padctl,
+				      unsigned int index)
+{
+	struct tegra_xusb_usb3_port *port;
+	struct tegra_xusb_lane *lane;
+	u32 value, offset;
+
+	port = tegra_xusb_find_usb3_port(padctl, index);
+	if (!port)
+		return -ENODEV;
+
+	port->context_saved = true;
+	lane = port->base.lane;
+
+	if (lane->pad == padctl->pcie)
+		offset = XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL6(lane->index);
+	else
+		offset = XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL6;
+
+	value = padctl_readl(padctl, offset);
+	value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
+		   XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
+	value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_TAP <<
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
+	padctl_writel(padctl, value, offset);
+
+	value = padctl_readl(padctl, offset) >>
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT;
+	port->tap1 = value & XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_TAP_MASK;
+
+	value = padctl_readl(padctl, offset);
+	value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
+		   XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
+	value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_AMP <<
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
+	padctl_writel(padctl, value, offset);
+
+	value = padctl_readl(padctl, offset) >>
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT;
+	port->amp = value & XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_AMP_MASK;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_USB3_PADX_CTL4(index));
+	value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_MASK <<
+		    XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT) |
+		   (XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_MASK <<
+		    XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT));
+	value |= (port->tap1 <<
+		  XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT) |
+		 (port->amp <<
+		  XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT);
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_USB3_PADX_CTL4(index));
+
+	value = padctl_readl(padctl, offset);
+	value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
+		   XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
+	value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_LATCH_G_Z <<
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
+	padctl_writel(padctl, value, offset);
+
+	value = padctl_readl(padctl, offset);
+	value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
+		   XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
+	value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_G_Z <<
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
+	padctl_writel(padctl, value, offset);
+
+	value = padctl_readl(padctl, offset) >>
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT;
+	port->ctle_g = value &
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_G_Z_MASK;
+
+	value = padctl_readl(padctl, offset);
+	value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_MASK <<
+		   XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT);
+	value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_CTLE_Z <<
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SEL_SHIFT;
+	padctl_writel(padctl, value, offset);
+
+	value = padctl_readl(padctl, offset) >>
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_SHIFT;
+	port->ctle_z = value &
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL6_MISC_OUT_G_Z_MASK;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(index));
+	value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_MASK <<
+		    XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT) |
+		   (XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_MASK <<
+		    XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT));
+	value |= (port->ctle_g <<
+		  XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT) |
+		 (port->ctle_z <<
+		  XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT);
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(index));
+
+	return 0;
+}
+
+static int tegra124_hsic_set_idle(struct tegra_xusb_padctl *padctl,
+				  unsigned int index, bool idle)
+{
+	u32 value;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
+
+	if (idle)
+		value |= XUSB_PADCTL_HSIC_PAD_CTL1_RPD_DATA |
+			 XUSB_PADCTL_HSIC_PAD_CTL1_RPU_STROBE;
+	else
+		value &= ~(XUSB_PADCTL_HSIC_PAD_CTL1_RPD_DATA |
+			   XUSB_PADCTL_HSIC_PAD_CTL1_RPU_STROBE);
+
+	padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));
+
+	return 0;
+}
+
+#define TEGRA124_LANE(_name, _offset, _shift, _mask, _type)		\
+	{								\
+		.name = _name,						\
+		.offset = _offset,					\
+		.shift = _shift,					\
+		.mask = _mask,						\
+		.num_funcs = ARRAY_SIZE(tegra124_##_type##_functions),	\
+		.funcs = tegra124_##_type##_functions,			\
+	}
+
+static const char * const tegra124_usb2_functions[] = {
+	"snps",
+	"xusb",
+	"uart",
+};
+
+static const struct tegra_xusb_lane_soc tegra124_usb2_lanes[] = {
+	TEGRA124_LANE("usb2-0", 0x004,  0, 0x3, usb2),
+	TEGRA124_LANE("usb2-1", 0x004,  2, 0x3, usb2),
+	TEGRA124_LANE("usb2-2", 0x004,  4, 0x3, usb2),
+};
+
+static struct tegra_xusb_lane *
+tegra124_usb2_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
+			 unsigned int index)
+{
+	struct tegra_xusb_usb2_lane *usb2;
+	int err;
+
+	usb2 = kzalloc(sizeof(*usb2), GFP_KERNEL);
+	if (!usb2)
+		return ERR_PTR(-ENOMEM);
+
+	INIT_LIST_HEAD(&usb2->base.list);
+	usb2->base.soc = &pad->soc->lanes[index];
+	usb2->base.index = index;
+	usb2->base.pad = pad;
+	usb2->base.np = np;
+
+	err = tegra_xusb_lane_parse_dt(&usb2->base, np);
+	if (err < 0) {
+		kfree(usb2);
+		return ERR_PTR(err);
+	}
+
+	return &usb2->base;
+}
+
+static void tegra124_usb2_lane_remove(struct tegra_xusb_lane *lane)
+{
+	struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(lane);
+
+	kfree(usb2);
+}
+
+static const struct tegra_xusb_lane_ops tegra124_usb2_lane_ops = {
+	.probe = tegra124_usb2_lane_probe,
+	.remove = tegra124_usb2_lane_remove,
+};
+
+static int tegra124_usb2_phy_init(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_enable(lane->pad->padctl);
+}
+
+static int tegra124_usb2_phy_exit(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_disable(lane->pad->padctl);
+}
+
+static int tegra124_usb2_phy_power_on(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+	struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(lane);
+	struct tegra_xusb_usb2_pad *pad = to_usb2_pad(lane->pad);
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	struct tegra124_xusb_padctl *priv;
+	struct tegra_xusb_usb2_port *port;
+	unsigned int index = lane->index;
+	u32 value;
+	int err;
+
+	port = tegra_xusb_find_usb2_port(padctl, index);
+	if (!port) {
+		dev_err(&phy->dev, "no port found for USB2 lane %u\n", index);
+		return -ENODEV;
+	}
+
+	priv = to_tegra124_xusb_padctl(padctl);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
+	value &= ~((XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_MASK <<
+		    XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT) |
+		   (XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_MASK <<
+		    XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT));
+	value |= (priv->fuse.hs_squelch_level <<
+		  XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_SQUELCH_LEVEL_SHIFT) |
+		 (XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_VAL <<
+		  XUSB_PADCTL_USB2_BIAS_PAD_CTL0_HS_DISCON_LEVEL_SHIFT);
+	padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB2_PORT_CAP);
+	value &= ~(XUSB_PADCTL_USB2_PORT_CAP_PORT_CAP_MASK <<
+		   XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_SHIFT(index));
+	value |= XUSB_PADCTL_USB2_PORT_CAP_HOST <<
+		XUSB_PADCTL_USB2_PORT_CAP_PORTX_CAP_SHIFT(index);
+	padctl_writel(padctl, value, XUSB_PADCTL_USB2_PORT_CAP);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index));
+	value &= ~((XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_MASK <<
+		    XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT) |
+		   (XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_MASK <<
+		    XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_SHIFT) |
+		   (XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_MASK <<
+		    XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_SHIFT) |
+		   XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD |
+		   XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD2 |
+		   XUSB_PADCTL_USB2_OTG_PAD_CTL0_PD_ZI);
+	value |= (priv->fuse.hs_curr_level[index] +
+		  usb2->hs_curr_level_offset) <<
+		XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_CURR_LEVEL_SHIFT;
+	value |= XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_VAL <<
+		XUSB_PADCTL_USB2_OTG_PAD_CTL0_HS_SLEW_SHIFT;
+	value |= XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_VAL(index) <<
+		XUSB_PADCTL_USB2_OTG_PAD_CTL0_LS_RSLEW_SHIFT;
+	padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index));
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index));
+	value &= ~((XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_MASK <<
+		    XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT) |
+		   (XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_MASK <<
+		    XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_SHIFT) |
+		   XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DR |
+		   XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_CHRP_FORCE_POWERUP |
+		   XUSB_PADCTL_USB2_OTG_PAD_CTL1_PD_DISC_FORCE_POWERUP);
+	value |= (priv->fuse.hs_term_range_adj <<
+		  XUSB_PADCTL_USB2_OTG_PAD_CTL1_TERM_RANGE_ADJ_SHIFT) |
+		 (priv->fuse.hs_iref_cap <<
+		  XUSB_PADCTL_USB2_OTG_PAD_CTL1_HS_IREF_CAP_SHIFT);
+	padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index));
+
+	err = regulator_enable(port->supply);
+	if (err)
+		return err;
+
+	mutex_lock(&pad->lock);
+
+	if (pad->enable++ > 0)
+		goto out;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
+	value &= ~XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD;
+	padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
+
+out:
+	mutex_unlock(&pad->lock);
+	return 0;
+}
+
+static int tegra124_usb2_phy_power_off(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+	struct tegra_xusb_usb2_pad *pad = to_usb2_pad(lane->pad);
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	struct tegra_xusb_usb2_port *port;
+	u32 value;
+
+	port = tegra_xusb_find_usb2_port(padctl, lane->index);
+	if (!port) {
+		dev_err(&phy->dev, "no port found for USB2 lane %u\n",
+			lane->index);
+		return -ENODEV;
+	}
+
+	mutex_lock(&pad->lock);
+
+	if (WARN_ON(pad->enable == 0))
+		goto out;
+
+	if (--pad->enable > 0)
+		goto out;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
+	value |= XUSB_PADCTL_USB2_BIAS_PAD_CTL0_PD;
+	padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL0);
+
+out:
+	regulator_disable(port->supply);
+	mutex_unlock(&pad->lock);
+	return 0;
+}
+
+static const struct phy_ops tegra124_usb2_phy_ops = {
+	.init = tegra124_usb2_phy_init,
+	.exit = tegra124_usb2_phy_exit,
+	.power_on = tegra124_usb2_phy_power_on,
+	.power_off = tegra124_usb2_phy_power_off,
+	.owner = THIS_MODULE,
+};
+
+static struct tegra_xusb_pad *
+tegra124_usb2_pad_probe(struct tegra_xusb_padctl *padctl,
+			const struct tegra_xusb_pad_soc *soc,
+			struct device_node *np)
+{
+	struct tegra_xusb_usb2_pad *usb2;
+	struct tegra_xusb_pad *pad;
+	int err;
+
+	usb2 = kzalloc(sizeof(*usb2), GFP_KERNEL);
+	if (!usb2)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_init(&usb2->lock);
+
+	pad = &usb2->base;
+	pad->ops = &tegra124_usb2_lane_ops;
+	pad->soc = soc;
+
+	err = tegra_xusb_pad_init(pad, padctl, np);
+	if (err < 0) {
+		kfree(usb2);
+		goto out;
+	}
+
+	err = tegra_xusb_pad_register(pad, &tegra124_usb2_phy_ops);
+	if (err < 0)
+		goto unregister;
+
+	dev_set_drvdata(&pad->dev, pad);
+
+	return pad;
+
+unregister:
+	device_unregister(&pad->dev);
+out:
+	return ERR_PTR(err);
+}
+
+static void tegra124_usb2_pad_remove(struct tegra_xusb_pad *pad)
+{
+	struct tegra_xusb_usb2_pad *usb2 = to_usb2_pad(pad);
+
+	kfree(usb2);
+}
+
+static const struct tegra_xusb_pad_ops tegra124_usb2_ops = {
+	.probe = tegra124_usb2_pad_probe,
+	.remove = tegra124_usb2_pad_remove,
+};
+
+static const struct tegra_xusb_pad_soc tegra124_usb2_pad = {
+	.name = "usb2",
+	.num_lanes = ARRAY_SIZE(tegra124_usb2_lanes),
+	.lanes = tegra124_usb2_lanes,
+	.ops = &tegra124_usb2_ops,
+};
+
+static const char * const tegra124_ulpi_functions[] = {
+	"snps",
+	"xusb",
+};
+
+static const struct tegra_xusb_lane_soc tegra124_ulpi_lanes[] = {
+	TEGRA124_LANE("ulpi-0", 0x004, 12, 0x1, ulpi),
+};
+
+static struct tegra_xusb_lane *
+tegra124_ulpi_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
+			 unsigned int index)
+{
+	struct tegra_xusb_ulpi_lane *ulpi;
+	int err;
+
+	ulpi = kzalloc(sizeof(*ulpi), GFP_KERNEL);
+	if (!ulpi)
+		return ERR_PTR(-ENOMEM);
+
+	INIT_LIST_HEAD(&ulpi->base.list);
+	ulpi->base.soc = &pad->soc->lanes[index];
+	ulpi->base.index = index;
+	ulpi->base.pad = pad;
+	ulpi->base.np = np;
+
+	err = tegra_xusb_lane_parse_dt(&ulpi->base, np);
+	if (err < 0) {
+		kfree(ulpi);
+		return ERR_PTR(err);
+	}
+
+	return &ulpi->base;
+}
+
+static void tegra124_ulpi_lane_remove(struct tegra_xusb_lane *lane)
+{
+	struct tegra_xusb_ulpi_lane *ulpi = to_ulpi_lane(lane);
+
+	kfree(ulpi);
+}
+
+static const struct tegra_xusb_lane_ops tegra124_ulpi_lane_ops = {
+	.probe = tegra124_ulpi_lane_probe,
+	.remove = tegra124_ulpi_lane_remove,
+};
+
+static int tegra124_ulpi_phy_init(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_enable(lane->pad->padctl);
+}
+
+static int tegra124_ulpi_phy_exit(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_disable(lane->pad->padctl);
+}
+
+static int tegra124_ulpi_phy_power_on(struct phy *phy)
+{
+	return 0;
+}
+
+static int tegra124_ulpi_phy_power_off(struct phy *phy)
+{
+	return 0;
+}
+
+static const struct phy_ops tegra124_ulpi_phy_ops = {
+	.init = tegra124_ulpi_phy_init,
+	.exit = tegra124_ulpi_phy_exit,
+	.power_on = tegra124_ulpi_phy_power_on,
+	.power_off = tegra124_ulpi_phy_power_off,
+	.owner = THIS_MODULE,
+};
+
+static struct tegra_xusb_pad *
+tegra124_ulpi_pad_probe(struct tegra_xusb_padctl *padctl,
+			const struct tegra_xusb_pad_soc *soc,
+			struct device_node *np)
+{
+	struct tegra_xusb_ulpi_pad *ulpi;
+	struct tegra_xusb_pad *pad;
+	int err;
+
+	ulpi = kzalloc(sizeof(*ulpi), GFP_KERNEL);
+	if (!ulpi)
+		return ERR_PTR(-ENOMEM);
+
+	pad = &ulpi->base;
+	pad->ops = &tegra124_ulpi_lane_ops;
+	pad->soc = soc;
+
+	err = tegra_xusb_pad_init(pad, padctl, np);
+	if (err < 0) {
+		kfree(ulpi);
+		goto out;
+	}
+
+	err = tegra_xusb_pad_register(pad, &tegra124_ulpi_phy_ops);
+	if (err < 0)
+		goto unregister;
+
+	dev_set_drvdata(&pad->dev, pad);
+
+	return pad;
+
+unregister:
+	device_unregister(&pad->dev);
+out:
+	return ERR_PTR(err);
+}
+
+static void tegra124_ulpi_pad_remove(struct tegra_xusb_pad *pad)
+{
+	struct tegra_xusb_ulpi_pad *ulpi = to_ulpi_pad(pad);
+
+	kfree(ulpi);
+}
+
+static const struct tegra_xusb_pad_ops tegra124_ulpi_ops = {
+	.probe = tegra124_ulpi_pad_probe,
+	.remove = tegra124_ulpi_pad_remove,
+};
+
+static const struct tegra_xusb_pad_soc tegra124_ulpi_pad = {
+	.name = "ulpi",
+	.num_lanes = ARRAY_SIZE(tegra124_ulpi_lanes),
+	.lanes = tegra124_ulpi_lanes,
+	.ops = &tegra124_ulpi_ops,
+};
+
+static const char * const tegra124_hsic_functions[] = {
+	"snps",
+	"xusb",
+};
+
+static const struct tegra_xusb_lane_soc tegra124_hsic_lanes[] = {
+	TEGRA124_LANE("hsic-0", 0x004, 14, 0x1, hsic),
+	TEGRA124_LANE("hsic-1", 0x004, 15, 0x1, hsic),
+};
+
+static struct tegra_xusb_lane *
+tegra124_hsic_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
+			 unsigned int index)
+{
+	struct tegra_xusb_hsic_lane *hsic;
+	int err;
+
+	hsic = kzalloc(sizeof(*hsic), GFP_KERNEL);
+	if (!hsic)
+		return ERR_PTR(-ENOMEM);
+
+	INIT_LIST_HEAD(&hsic->base.list);
+	hsic->base.soc = &pad->soc->lanes[index];
+	hsic->base.index = index;
+	hsic->base.pad = pad;
+	hsic->base.np = np;
+
+	err = tegra_xusb_lane_parse_dt(&hsic->base, np);
+	if (err < 0) {
+		kfree(hsic);
+		return ERR_PTR(err);
+	}
+
+	return &hsic->base;
+}
+
+static void tegra124_hsic_lane_remove(struct tegra_xusb_lane *lane)
+{
+	struct tegra_xusb_hsic_lane *hsic = to_hsic_lane(lane);
+
+	kfree(hsic);
+}
+
+static const struct tegra_xusb_lane_ops tegra124_hsic_lane_ops = {
+	.probe = tegra124_hsic_lane_probe,
+	.remove = tegra124_hsic_lane_remove,
+};
+
+static int tegra124_hsic_phy_init(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_enable(lane->pad->padctl);
+}
+
+static int tegra124_hsic_phy_exit(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_disable(lane->pad->padctl);
+}
+
+static int tegra124_hsic_phy_power_on(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+	struct tegra_xusb_hsic_lane *hsic = to_hsic_lane(lane);
+	struct tegra_xusb_hsic_pad *pad = to_hsic_pad(lane->pad);
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	unsigned int index = lane->index;
+	u32 value;
+	int err;
+
+	err = regulator_enable(pad->supply);
+	if (err)
+		return err;
+
+	padctl_writel(padctl, hsic->strobe_trim,
+		      XUSB_PADCTL_HSIC_STRB_TRIM_CONTROL);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
+
+	if (hsic->auto_term)
+		value |= XUSB_PADCTL_HSIC_PAD_CTL1_AUTO_TERM_EN;
+	else
+		value &= ~XUSB_PADCTL_HSIC_PAD_CTL1_AUTO_TERM_EN;
+
+	padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));
+
+	value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL0(index));
+	value &= ~((XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_MASK <<
+		    XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_SHIFT) |
+		   (XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_MASK <<
+		    XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_SHIFT) |
+		   (XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_MASK <<
+		    XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_SHIFT) |
+		   (XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_MASK <<
+		    XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_SHIFT));
+	value |= (hsic->tx_rtune_n <<
+		  XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEN_SHIFT) |
+		(hsic->tx_rtune_p <<
+		  XUSB_PADCTL_HSIC_PAD_CTL0_TX_RTUNEP_SHIFT) |
+		(hsic->tx_rslew_n <<
+		 XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWN_SHIFT) |
+		(hsic->tx_rslew_p <<
+		 XUSB_PADCTL_HSIC_PAD_CTL0_TX_RSLEWP_SHIFT);
+	padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL0(index));
+
+	value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL2(index));
+	value &= ~((XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_MASK <<
+		    XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT) |
+		   (XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_MASK <<
+		    XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT));
+	value |= (hsic->rx_strobe_trim <<
+		  XUSB_PADCTL_HSIC_PAD_CTL2_RX_STROBE_TRIM_SHIFT) |
+		(hsic->rx_data_trim <<
+		 XUSB_PADCTL_HSIC_PAD_CTL2_RX_DATA_TRIM_SHIFT);
+	padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL2(index));
+
+	value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
+	value &= ~(XUSB_PADCTL_HSIC_PAD_CTL1_RPD_STROBE |
+		   XUSB_PADCTL_HSIC_PAD_CTL1_RPU_DATA |
+		   XUSB_PADCTL_HSIC_PAD_CTL1_PD_RX |
+		   XUSB_PADCTL_HSIC_PAD_CTL1_PD_ZI |
+		   XUSB_PADCTL_HSIC_PAD_CTL1_PD_TRX |
+		   XUSB_PADCTL_HSIC_PAD_CTL1_PD_TX);
+	value |= XUSB_PADCTL_HSIC_PAD_CTL1_RPD_DATA |
+		 XUSB_PADCTL_HSIC_PAD_CTL1_RPU_STROBE;
+	padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));
+
+	return 0;
+}
+
+static int tegra124_hsic_phy_power_off(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+	struct tegra_xusb_hsic_pad *pad = to_hsic_pad(lane->pad);
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	unsigned int index = lane->index;
+	u32 value;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_HSIC_PADX_CTL1(index));
+	value |= XUSB_PADCTL_HSIC_PAD_CTL1_PD_RX |
+		 XUSB_PADCTL_HSIC_PAD_CTL1_PD_ZI |
+		 XUSB_PADCTL_HSIC_PAD_CTL1_PD_TRX |
+		 XUSB_PADCTL_HSIC_PAD_CTL1_PD_TX;
+	padctl_writel(padctl, value, XUSB_PADCTL_HSIC_PADX_CTL1(index));
+
+	regulator_disable(pad->supply);
+
+	return 0;
+}
+
+static const struct phy_ops tegra124_hsic_phy_ops = {
+	.init = tegra124_hsic_phy_init,
+	.exit = tegra124_hsic_phy_exit,
+	.power_on = tegra124_hsic_phy_power_on,
+	.power_off = tegra124_hsic_phy_power_off,
+	.owner = THIS_MODULE,
+};
+
+static struct tegra_xusb_pad *
+tegra124_hsic_pad_probe(struct tegra_xusb_padctl *padctl,
+			const struct tegra_xusb_pad_soc *soc,
+			struct device_node *np)
+{
+	struct tegra_xusb_hsic_pad *hsic;
+	struct tegra_xusb_pad *pad;
+	int err;
+
+	hsic = kzalloc(sizeof(*hsic), GFP_KERNEL);
+	if (!hsic)
+		return ERR_PTR(-ENOMEM);
+
+	pad = &hsic->base;
+	pad->ops = &tegra124_hsic_lane_ops;
+	pad->soc = soc;
+
+	err = tegra_xusb_pad_init(pad, padctl, np);
+	if (err < 0) {
+		kfree(hsic);
+		goto out;
+	}
+
+	err = tegra_xusb_pad_register(pad, &tegra124_hsic_phy_ops);
+	if (err < 0)
+		goto unregister;
+
+	dev_set_drvdata(&pad->dev, pad);
+
+	return pad;
+
+unregister:
+	device_unregister(&pad->dev);
+out:
+	return ERR_PTR(err);
+}
+
+static void tegra124_hsic_pad_remove(struct tegra_xusb_pad *pad)
+{
+	struct tegra_xusb_hsic_pad *hsic = to_hsic_pad(pad);
+
+	kfree(hsic);
+}
+
+static const struct tegra_xusb_pad_ops tegra124_hsic_ops = {
+	.probe = tegra124_hsic_pad_probe,
+	.remove = tegra124_hsic_pad_remove,
+};
+
+static const struct tegra_xusb_pad_soc tegra124_hsic_pad = {
+	.name = "hsic",
+	.num_lanes = ARRAY_SIZE(tegra124_hsic_lanes),
+	.lanes = tegra124_hsic_lanes,
+	.ops = &tegra124_hsic_ops,
+};
+
+static const char * const tegra124_pcie_functions[] = {
+	"pcie",
+	"usb3-ss",
+	"sata",
+};
+
+static const struct tegra_xusb_lane_soc tegra124_pcie_lanes[] = {
+	TEGRA124_LANE("pcie-0", 0x134, 16, 0x3, pcie),
+	TEGRA124_LANE("pcie-1", 0x134, 18, 0x3, pcie),
+	TEGRA124_LANE("pcie-2", 0x134, 20, 0x3, pcie),
+	TEGRA124_LANE("pcie-3", 0x134, 22, 0x3, pcie),
+	TEGRA124_LANE("pcie-4", 0x134, 24, 0x3, pcie),
+};
+
+static struct tegra_xusb_lane *
+tegra124_pcie_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
+			 unsigned int index)
+{
+	struct tegra_xusb_pcie_lane *pcie;
+	int err;
+
+	pcie = kzalloc(sizeof(*pcie), GFP_KERNEL);
+	if (!pcie)
+		return ERR_PTR(-ENOMEM);
+
+	INIT_LIST_HEAD(&pcie->base.list);
+	pcie->base.soc = &pad->soc->lanes[index];
+	pcie->base.index = index;
+	pcie->base.pad = pad;
+	pcie->base.np = np;
+
+	err = tegra_xusb_lane_parse_dt(&pcie->base, np);
+	if (err < 0) {
+		kfree(pcie);
+		return ERR_PTR(err);
+	}
+
+	return &pcie->base;
+}
+
+static void tegra124_pcie_lane_remove(struct tegra_xusb_lane *lane)
+{
+	struct tegra_xusb_pcie_lane *pcie = to_pcie_lane(lane);
+
+	kfree(pcie);
+}
+
+static const struct tegra_xusb_lane_ops tegra124_pcie_lane_ops = {
+	.probe = tegra124_pcie_lane_probe,
+	.remove = tegra124_pcie_lane_remove,
+};
+
+static int tegra124_pcie_phy_init(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_enable(lane->pad->padctl);
+}
+
+static int tegra124_pcie_phy_exit(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_disable(lane->pad->padctl);
+}
+
+static int tegra124_pcie_phy_power_on(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	unsigned long timeout;
+	int err = -ETIMEDOUT;
+	u32 value;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
+	value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);
+	value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN |
+		 XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN |
+		 XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
+	value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
+
+	timeout = jiffies + msecs_to_jiffies(50);
+
+	while (time_before(jiffies, timeout)) {
+		value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
+		if (value & XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET) {
+			err = 0;
+			break;
+		}
+
+		usleep_range(100, 200);
+	}
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
+	value |= XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(lane->index);
+	padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
+
+	return err;
+}
+
+static int tegra124_pcie_phy_power_off(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	u32 value;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
+	value &= ~XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(lane->index);
+	padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
+	value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
+
+	return 0;
+}
+
+static const struct phy_ops tegra124_pcie_phy_ops = {
+	.init = tegra124_pcie_phy_init,
+	.exit = tegra124_pcie_phy_exit,
+	.power_on = tegra124_pcie_phy_power_on,
+	.power_off = tegra124_pcie_phy_power_off,
+	.owner = THIS_MODULE,
+};
+
+static struct tegra_xusb_pad *
+tegra124_pcie_pad_probe(struct tegra_xusb_padctl *padctl,
+			const struct tegra_xusb_pad_soc *soc,
+			struct device_node *np)
+{
+	struct tegra_xusb_pcie_pad *pcie;
+	struct tegra_xusb_pad *pad;
+	int err;
+
+	pcie = kzalloc(sizeof(*pcie), GFP_KERNEL);
+	if (!pcie)
+		return ERR_PTR(-ENOMEM);
+
+	pad = &pcie->base;
+	pad->ops = &tegra124_pcie_lane_ops;
+	pad->soc = soc;
+
+	err = tegra_xusb_pad_init(pad, padctl, np);
+	if (err < 0) {
+		kfree(pcie);
+		goto out;
+	}
+
+	err = tegra_xusb_pad_register(pad, &tegra124_pcie_phy_ops);
+	if (err < 0)
+		goto unregister;
+
+	dev_set_drvdata(&pad->dev, pad);
+
+	return pad;
+
+unregister:
+	device_unregister(&pad->dev);
+out:
+	return ERR_PTR(err);
+}
+
+static void tegra124_pcie_pad_remove(struct tegra_xusb_pad *pad)
+{
+	struct tegra_xusb_pcie_pad *pcie = to_pcie_pad(pad);
+
+	kfree(pcie);
+}
+
+static const struct tegra_xusb_pad_ops tegra124_pcie_ops = {
+	.probe = tegra124_pcie_pad_probe,
+	.remove = tegra124_pcie_pad_remove,
+};
+
+static const struct tegra_xusb_pad_soc tegra124_pcie_pad = {
+	.name = "pcie",
+	.num_lanes = ARRAY_SIZE(tegra124_pcie_lanes),
+	.lanes = tegra124_pcie_lanes,
+	.ops = &tegra124_pcie_ops,
+};
+
+static const struct tegra_xusb_lane_soc tegra124_sata_lanes[] = {
+	TEGRA124_LANE("sata-0", 0x134, 26, 0x3, pcie),
+};
+
+static struct tegra_xusb_lane *
+tegra124_sata_lane_probe(struct tegra_xusb_pad *pad, struct device_node *np,
+			 unsigned int index)
+{
+	struct tegra_xusb_sata_lane *sata;
+	int err;
+
+	sata = kzalloc(sizeof(*sata), GFP_KERNEL);
+	if (!sata)
+		return ERR_PTR(-ENOMEM);
+
+	INIT_LIST_HEAD(&sata->base.list);
+	sata->base.soc = &pad->soc->lanes[index];
+	sata->base.index = index;
+	sata->base.pad = pad;
+	sata->base.np = np;
+
+	err = tegra_xusb_lane_parse_dt(&sata->base, np);
+	if (err < 0) {
+		kfree(sata);
+		return ERR_PTR(err);
+	}
+
+	return &sata->base;
+}
+
+static void tegra124_sata_lane_remove(struct tegra_xusb_lane *lane)
+{
+	struct tegra_xusb_sata_lane *sata = to_sata_lane(lane);
+
+	kfree(sata);
+}
+
+static const struct tegra_xusb_lane_ops tegra124_sata_lane_ops = {
+	.probe = tegra124_sata_lane_probe,
+	.remove = tegra124_sata_lane_remove,
+};
+
+static int tegra124_sata_phy_init(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_enable(lane->pad->padctl);
+}
+
+static int tegra124_sata_phy_exit(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+	return tegra124_xusb_padctl_disable(lane->pad->padctl);
+}
+
+static int tegra124_sata_phy_power_on(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	unsigned long timeout;
+	int err = -ETIMEDOUT;
+	u32 value;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
+	value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
+	value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
+	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+	value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+	value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+
+	timeout = jiffies + msecs_to_jiffies(50);
+
+	while (time_before(jiffies, timeout)) {
+		value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+		if (value & XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET) {
+			err = 0;
+			break;
+		}
+
+		usleep_range(100, 200);
+	}
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
+	value |= XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(lane->index);
+	padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
+
+	return err;
+}
+
+static int tegra124_sata_phy_power_off(struct phy *phy)
+{
+	struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	u32 value;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_USB3_PAD_MUX);
+	value &= ~XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(lane->index);
+	padctl_writel(padctl, value, XUSB_PADCTL_USB3_PAD_MUX);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+	value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+	value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
+	value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
+	value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
+	value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
+
+	return 0;
+}
+
+static const struct phy_ops tegra124_sata_phy_ops = {
+	.init = tegra124_sata_phy_init,
+	.exit = tegra124_sata_phy_exit,
+	.power_on = tegra124_sata_phy_power_on,
+	.power_off = tegra124_sata_phy_power_off,
+	.owner = THIS_MODULE,
+};
+
+static struct tegra_xusb_pad *
+tegra124_sata_pad_probe(struct tegra_xusb_padctl *padctl,
+			const struct tegra_xusb_pad_soc *soc,
+			struct device_node *np)
+{
+	struct tegra_xusb_sata_pad *sata;
+	struct tegra_xusb_pad *pad;
+	int err;
+
+	sata = kzalloc(sizeof(*sata), GFP_KERNEL);
+	if (!sata)
+		return ERR_PTR(-ENOMEM);
+
+	pad = &sata->base;
+	pad->ops = &tegra124_sata_lane_ops;
+	pad->soc = soc;
+
+	err = tegra_xusb_pad_init(pad, padctl, np);
+	if (err < 0) {
+		kfree(sata);
+		goto out;
+	}
+
+	err = tegra_xusb_pad_register(pad, &tegra124_sata_phy_ops);
+	if (err < 0)
+		goto unregister;
+
+	dev_set_drvdata(&pad->dev, pad);
+
+	return pad;
+
+unregister:
+	device_unregister(&pad->dev);
+out:
+	return ERR_PTR(err);
+}
+
+static void tegra124_sata_pad_remove(struct tegra_xusb_pad *pad)
+{
+	struct tegra_xusb_sata_pad *sata = to_sata_pad(pad);
+
+	kfree(sata);
+}
+
+static const struct tegra_xusb_pad_ops tegra124_sata_ops = {
+	.probe = tegra124_sata_pad_probe,
+	.remove = tegra124_sata_pad_remove,
+};
+
+static const struct tegra_xusb_pad_soc tegra124_sata_pad = {
+	.name = "sata",
+	.num_lanes = ARRAY_SIZE(tegra124_sata_lanes),
+	.lanes = tegra124_sata_lanes,
+	.ops = &tegra124_sata_ops,
+};
+
+static const struct tegra_xusb_pad_soc *tegra124_pads[] = {
+	&tegra124_usb2_pad,
+	&tegra124_ulpi_pad,
+	&tegra124_hsic_pad,
+	&tegra124_pcie_pad,
+	&tegra124_sata_pad,
+};
+
+static int tegra124_usb2_port_enable(struct tegra_xusb_port *port)
+{
+	return 0;
+}
+
+static void tegra124_usb2_port_disable(struct tegra_xusb_port *port)
+{
+}
+
+static struct tegra_xusb_lane *
+tegra124_usb2_port_map(struct tegra_xusb_port *port)
+{
+	return tegra_xusb_find_lane(port->padctl, "usb2", port->index);
+}
+
+static const struct tegra_xusb_port_ops tegra124_usb2_port_ops = {
+	.enable = tegra124_usb2_port_enable,
+	.disable = tegra124_usb2_port_disable,
+	.map = tegra124_usb2_port_map,
+};
+
+static int tegra124_ulpi_port_enable(struct tegra_xusb_port *port)
+{
+	return 0;
+}
+
+static void tegra124_ulpi_port_disable(struct tegra_xusb_port *port)
+{
+}
+
+static struct tegra_xusb_lane *
+tegra124_ulpi_port_map(struct tegra_xusb_port *port)
+{
+	return tegra_xusb_find_lane(port->padctl, "ulpi", port->index);
+}
+
+static const struct tegra_xusb_port_ops tegra124_ulpi_port_ops = {
+	.enable = tegra124_ulpi_port_enable,
+	.disable = tegra124_ulpi_port_disable,
+	.map = tegra124_ulpi_port_map,
+};
+
+static int tegra124_hsic_port_enable(struct tegra_xusb_port *port)
+{
+	return 0;
+}
+
+static void tegra124_hsic_port_disable(struct tegra_xusb_port *port)
+{
+}
+
+static struct tegra_xusb_lane *
+tegra124_hsic_port_map(struct tegra_xusb_port *port)
+{
+	return tegra_xusb_find_lane(port->padctl, "hsic", port->index);
+}
+
+static const struct tegra_xusb_port_ops tegra124_hsic_port_ops = {
+	.enable = tegra124_hsic_port_enable,
+	.disable = tegra124_hsic_port_disable,
+	.map = tegra124_hsic_port_map,
+};
+
+static int tegra124_usb3_port_enable(struct tegra_xusb_port *port)
+{
+	struct tegra_xusb_usb3_port *usb3 = to_usb3_port(port);
+	struct tegra_xusb_padctl *padctl = port->padctl;
+	struct tegra_xusb_lane *lane = usb3->base.lane;
+	unsigned int index = port->index, offset;
+	int ret = 0;
+	u32 value;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);
+
+	if (!usb3->internal)
+		value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(index);
+	else
+		value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_INTERNAL(index);
+
+	value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(index);
+	value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(index, usb3->port);
+	padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_MAP);
+
+	/*
+	 * TODO: move this code into the PCIe/SATA PHY ->power_on() callbacks
+	 * and conditionalize based on mux function? This seems to work, but
+	 * might not be the exact proper sequence.
+	 */
+	value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(index));
+	value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_MASK <<
+		    XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_SHIFT) |
+		   (XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_MASK <<
+		    XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_SHIFT) |
+		   (XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_MASK <<
+		    XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_SHIFT));
+	value |= (XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_VAL <<
+		  XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_WANDER_SHIFT) |
+		 (XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_VAL <<
+		  XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_CDR_CNTL_SHIFT) |
+		 (XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_VAL <<
+		  XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_SHIFT);
+
+	if (usb3->context_saved) {
+		value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_MASK <<
+			    XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT) |
+			   (XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_MASK <<
+			    XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT));
+		value |= (usb3->ctle_g <<
+			  XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_G_SHIFT) |
+			 (usb3->ctle_z <<
+			  XUSB_PADCTL_IOPHY_USB3_PAD_CTL2_RX_EQ_Z_SHIFT);
+	}
+
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_USB3_PADX_CTL2(index));
+
+	value = XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_VAL;
+
+	if (usb3->context_saved) {
+		value &= ~((XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_MASK <<
+			    XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT) |
+			   (XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_MASK <<
+			    XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT));
+		value |= (usb3->tap1 <<
+			  XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_TAP_SHIFT) |
+			 (usb3->amp <<
+			  XUSB_PADCTL_IOPHY_USB3_PAD_CTL4_DFE_CNTL_AMP_SHIFT);
+	}
+
+	padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_USB3_PADX_CTL4(index));
+
+	if (lane->pad == padctl->pcie)
+		offset = XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL2(lane->index);
+	else
+		offset = XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL2;
+
+	value = padctl_readl(padctl, offset);
+	value &= ~(XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_MASK <<
+		   XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_SHIFT);
+	value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_VAL <<
+		XUSB_PADCTL_IOPHY_MISC_PAD_CTL2_SPARE_IN_SHIFT;
+	padctl_writel(padctl, value, offset);
+
+	if (lane->pad == padctl->pcie)
+		offset = XUSB_PADCTL_IOPHY_MISC_PAD_PX_CTL5(lane->index);
+	else
+		offset = XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL5;
+
+	value = padctl_readl(padctl, offset);
+	value |= XUSB_PADCTL_IOPHY_MISC_PAD_CTL5_RX_QEYE_EN;
+	padctl_writel(padctl, value, offset);
+
+	/* Enable SATA PHY when SATA lane is used */
+	if (lane->pad == padctl->sata) {
+		value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+		value &= ~(XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_MASK <<
+			   XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_SHIFT);
+		value |= 0x2 <<
+			XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL0_REFCLK_NDIV_SHIFT;
+		padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
+
+		value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL2);
+		value &= ~((XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_MASK <<
+			    XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_SHIFT) |
+			   (XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_MASK <<
+			    XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_SHIFT) |
+			   (XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_MASK <<
+			    XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_SHIFT) |
+			   XUSB_PADCTL_IOPHY_PLL_S0_CTL2_TCLKOUT_EN);
+		value |= (0x7 <<
+			  XUSB_PADCTL_IOPHY_PLL_S0_CTL2_XDIGCLK_SEL_SHIFT) |
+			 (0x8 <<
+			  XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL1_CP_CNTL_SHIFT) |
+			 (0x8 <<
+			  XUSB_PADCTL_IOPHY_PLL_S0_CTL2_PLL0_CP_CNTL_SHIFT) |
+			 XUSB_PADCTL_IOPHY_PLL_S0_CTL2_TXCLKREF_SEL;
+		padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL2);
+
+		value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL3);
+		value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL3_RCAL_BYPASS;
+		padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL3);
+	}
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value &= ~XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_VCORE_DOWN(index);
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	usleep_range(100, 200);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value &= ~XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN_EARLY(index);
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	usleep_range(100, 200);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value &= ~XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(index);
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	return ret;
+}
+
+static void tegra124_usb3_port_disable(struct tegra_xusb_port *port)
+{
+	struct tegra_xusb_padctl *padctl = port->padctl;
+	u32 value;
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value |= XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN_EARLY(port->index);
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	usleep_range(100, 200);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value |= XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(port->index);
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	usleep_range(250, 350);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
+	value |= XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_VCORE_DOWN(port->index);
+	padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
+
+	value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_MAP);
+	value &= ~XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP_MASK(port->index);
+	value |= XUSB_PADCTL_SS_PORT_MAP_PORTX_MAP(port->index, 0x7);
+	padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_MAP);
+}
+
+static const struct tegra_xusb_lane_map tegra124_usb3_map[] = {
+	{ 0, "pcie", 0 },
+	{ 1, "pcie", 1 },
+	{ 1, "sata", 0 },
+	{ 0, NULL,   0 },
+};
+
+static struct tegra_xusb_lane *
+tegra124_usb3_port_map(struct tegra_xusb_port *port)
+{
+	return tegra_xusb_port_find_lane(port, tegra124_usb3_map, "usb3-ss");
+}
+
+static const struct tegra_xusb_port_ops tegra124_usb3_port_ops = {
+	.enable = tegra124_usb3_port_enable,
+	.disable = tegra124_usb3_port_disable,
+	.map = tegra124_usb3_port_map,
+};
+
+static int
+tegra124_xusb_read_fuse_calibration(struct tegra124_xusb_fuse_calibration *fuse)
+{
+	unsigned int i;
+	int err;
+	u32 value;
+
+	err = tegra_fuse_readl(TEGRA_FUSE_SKU_CALIB_0, &value);
+	if (err < 0)
+		return err;
+
+	for (i = 0; i < ARRAY_SIZE(fuse->hs_curr_level); i++) {
+		fuse->hs_curr_level[i] =
+			(value >> FUSE_SKU_CALIB_HS_CURR_LEVEL_PADX_SHIFT(i)) &
+			FUSE_SKU_CALIB_HS_CURR_LEVEL_PAD_MASK;
+	}
+	fuse->hs_iref_cap =
+		(value >> FUSE_SKU_CALIB_HS_IREF_CAP_SHIFT) &
+		FUSE_SKU_CALIB_HS_IREF_CAP_MASK;
+	fuse->hs_term_range_adj =
+		(value >> FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_SHIFT) &
+		FUSE_SKU_CALIB_HS_TERM_RANGE_ADJ_MASK;
+	fuse->hs_squelch_level =
+		(value >> FUSE_SKU_CALIB_HS_SQUELCH_LEVEL_SHIFT) &
+		FUSE_SKU_CALIB_HS_SQUELCH_LEVEL_MASK;
+
+	return 0;
+}
+
+static struct tegra_xusb_padctl *
+tegra124_xusb_padctl_probe(struct device *dev,
+			   const struct tegra_xusb_padctl_soc *soc)
+{
+	struct tegra124_xusb_padctl *padctl;
+	int err;
+
+	padctl = devm_kzalloc(dev, sizeof(*padctl), GFP_KERNEL);
+	if (!padctl)
+		return ERR_PTR(-ENOMEM);
+
+	padctl->base.dev = dev;
+	padctl->base.soc = soc;
+
+	err = tegra124_xusb_read_fuse_calibration(&padctl->fuse);
+	if (err < 0)
+		return ERR_PTR(err);
+
+	return &padctl->base;
+}
+
+static void tegra124_xusb_padctl_remove(struct tegra_xusb_padctl *padctl)
+{
+}
+
+static const struct tegra_xusb_padctl_ops tegra124_xusb_padctl_ops = {
+	.probe = tegra124_xusb_padctl_probe,
+	.remove = tegra124_xusb_padctl_remove,
+	.usb3_save_context = tegra124_usb3_save_context,
+	.hsic_set_idle = tegra124_hsic_set_idle,
+};
+
+const struct tegra_xusb_padctl_soc tegra124_xusb_padctl_soc = {
+	.num_pads = ARRAY_SIZE(tegra124_pads),
+	.pads = tegra124_pads,
+	.ports = {
+		.usb2 = {
+			.ops = &tegra124_usb2_port_ops,
+			.count = 3,
+		},
+		.ulpi = {
+			.ops = &tegra124_ulpi_port_ops,
+			.count = 1,
+		},
+		.hsic = {
+			.ops = &tegra124_hsic_port_ops,
+			.count = 2,
+		},
+		.usb3 = {
+			.ops = &tegra124_usb3_port_ops,
+			.count = 2,
+		},
+	},
+	.ops = &tegra124_xusb_padctl_ops,
+};
+EXPORT_SYMBOL_GPL(tegra124_xusb_padctl_soc);
+
+MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
+MODULE_DESCRIPTION("NVIDIA Tegra 124 XUSB Pad Controller driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
new file mode 100644
index 000000000000..ec83dfdbc206
--- /dev/null
+++ b/drivers/phy/tegra/xusb.c
@@ -0,0 +1,1021 @@
+/*
+ * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/mailbox_client.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+#include <soc/tegra/fuse.h>
+
+#include "xusb.h"
+
+static struct phy *tegra_xusb_pad_of_xlate(struct device *dev,
+					   struct of_phandle_args *args)
+{
+	struct tegra_xusb_pad *pad = dev_get_drvdata(dev);
+	struct phy *phy = NULL;
+	unsigned int i;
+
+	if (args->args_count != 0)
+		return ERR_PTR(-EINVAL);
+
+	for (i = 0; i < pad->soc->num_lanes; i++) {
+		if (!pad->lanes[i])
+			continue;
+
+		if (pad->lanes[i]->dev.of_node == args->np) {
+			phy = pad->lanes[i];
+			break;
+		}
+	}
+
+	if (phy == NULL)
+		phy = ERR_PTR(-ENODEV);
+
+	return phy;
+}
+
+static const struct of_device_id tegra_xusb_padctl_of_match[] = {
+#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
+	{
+		.compatible = "nvidia,tegra124-xusb-padctl",
+		.data = &tegra124_xusb_padctl_soc,
+	},
+#endif
+#if defined(CONFIG_ARCH_TEGRA_210_SOC)
+	{
+		.compatible = "nvidia,tegra210-xusb-padctl",
+		.data = &tegra210_xusb_padctl_soc,
+	},
+#endif
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tegra_xusb_padctl_of_match);
+
+static struct device_node *
+tegra_xusb_find_pad_node(struct tegra_xusb_padctl *padctl, const char *name)
+{
+	/*
+	 * of_find_node_by_name() drops a reference, so make sure to grab one.
+	 */
+	struct device_node *np = of_node_get(padctl->dev->of_node);
+
+	np = of_find_node_by_name(np, "pads");
+	if (np)
+		np = of_find_node_by_name(np, name);
+
+	return np;
+}
+
+static struct device_node *
+tegra_xusb_pad_find_phy_node(struct tegra_xusb_pad *pad, unsigned int index)
+{
+	/*
+	 * of_find_node_by_name() drops a reference, so make sure to grab one.
+	 */
+	struct device_node *np = of_node_get(pad->dev.of_node);
+
+	np = of_find_node_by_name(np, "lanes");
+	if (!np)
+		return NULL;
+
+	return of_find_node_by_name(np, pad->soc->lanes[index].name);
+}
+
+int tegra_xusb_lane_lookup_function(struct tegra_xusb_lane *lane,
+				    const char *function)
+{
+	unsigned int i;
+
+	for (i = 0; i < lane->soc->num_funcs; i++)
+		if (strcmp(function, lane->soc->funcs[i]) == 0)
+			return i;
+
+	return -EINVAL;
+}
+
+int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane,
+			     struct device_node *np)
+{
+	struct device *dev = &lane->pad->dev;
+	const char *function;
+	int err;
+
+	err = of_property_read_string(np, "nvidia,function", &function);
+	if (err < 0)
+		return err;
+
+	err = tegra_xusb_lane_lookup_function(lane, function);
+	if (err < 0) {
+		dev_err(dev, "invalid function \"%s\" for lane \"%s\"\n",
+			function, np->name);
+		return err;
+	}
+
+	lane->function = err;
+
+	return 0;
+}
+
+static void tegra_xusb_lane_destroy(struct phy *phy)
+{
+	if (phy) {
+		struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+		lane->pad->ops->remove(lane);
+		phy_destroy(phy);
+	}
+}
+
+static void tegra_xusb_pad_release(struct device *dev)
+{
+	struct tegra_xusb_pad *pad = to_tegra_xusb_pad(dev);
+
+	pad->soc->ops->remove(pad);
+}
+
+static struct device_type tegra_xusb_pad_type = {
+	.release = tegra_xusb_pad_release,
+};
+
+int tegra_xusb_pad_init(struct tegra_xusb_pad *pad,
+			struct tegra_xusb_padctl *padctl,
+			struct device_node *np)
+{
+	int err;
+
+	device_initialize(&pad->dev);
+	INIT_LIST_HEAD(&pad->list);
+	pad->dev.parent = padctl->dev;
+	pad->dev.type = &tegra_xusb_pad_type;
+	pad->dev.of_node = np;
+	pad->padctl = padctl;
+
+	err = dev_set_name(&pad->dev, "%s", pad->soc->name);
+	if (err < 0)
+		goto unregister;
+
+	err = device_add(&pad->dev);
+	if (err < 0)
+		goto unregister;
+
+	return 0;
+
+unregister:
+	device_unregister(&pad->dev);
+	return err;
+}
+
+int tegra_xusb_pad_register(struct tegra_xusb_pad *pad,
+			    const struct phy_ops *ops)
+{
+	struct device_node *children;
+	struct phy *lane;
+	unsigned int i;
+	int err;
+
+	children = of_find_node_by_name(pad->dev.of_node, "lanes");
+	if (!children)
+		return -ENODEV;
+
+	pad->lanes = devm_kcalloc(&pad->dev, pad->soc->num_lanes, sizeof(lane),
+				  GFP_KERNEL);
+	if (!pad->lanes) {
+		of_node_put(children);
+		return -ENOMEM;
+	}
+
+	for (i = 0; i < pad->soc->num_lanes; i++) {
+		struct device_node *np = tegra_xusb_pad_find_phy_node(pad, i);
+		struct tegra_xusb_lane *lane;
+
+		/* skip disabled lanes */
+		if (!np || !of_device_is_available(np)) {
+			of_node_put(np);
+			continue;
+		}
+
+		pad->lanes[i] = phy_create(&pad->dev, np, ops);
+		if (IS_ERR(pad->lanes[i])) {
+			err = PTR_ERR(pad->lanes[i]);
+			of_node_put(np);
+			goto remove;
+		}
+
+		lane = pad->ops->probe(pad, np, i);
+		if (IS_ERR(lane)) {
+			phy_destroy(pad->lanes[i]);
+			err = PTR_ERR(lane);
+			goto remove;
+		}
+
+		list_add_tail(&lane->list, &pad->padctl->lanes);
+		phy_set_drvdata(pad->lanes[i], lane);
+	}
+
+	pad->provider = of_phy_provider_register_full(&pad->dev, children,
+						      tegra_xusb_pad_of_xlate);
+	if (IS_ERR(pad->provider)) {
+		err = PTR_ERR(pad->provider);
+		goto remove;
+	}
+
+	return 0;
+
+remove:
+	while (i--)
+		tegra_xusb_lane_destroy(pad->lanes[i]);
+
+	of_node_put(children);
+
+	return err;
+}
+
+void tegra_xusb_pad_unregister(struct tegra_xusb_pad *pad)
+{
+	unsigned int i = pad->soc->num_lanes;
+
+	of_phy_provider_unregister(pad->provider);
+
+	while (i--)
+		tegra_xusb_lane_destroy(pad->lanes[i]);
+
+	device_unregister(&pad->dev);
+}
+
+static struct tegra_xusb_pad *
+tegra_xusb_pad_create(struct tegra_xusb_padctl *padctl,
+		      const struct tegra_xusb_pad_soc *soc)
+{
+	struct tegra_xusb_pad *pad;
+	struct device_node *np;
+	int err;
+
+	np = tegra_xusb_find_pad_node(padctl, soc->name);
+	if (!np || !of_device_is_available(np))
+		return NULL;
+
+	pad = soc->ops->probe(padctl, soc, np);
+	if (IS_ERR(pad)) {
+		err = PTR_ERR(pad);
+		dev_err(padctl->dev, "failed to create pad %s: %d\n",
+			soc->name, err);
+		return ERR_PTR(err);
+	}
+
+	/* XXX move this into ->probe() to avoid string comparison */
+	if (strcmp(soc->name, "pcie") == 0)
+		padctl->pcie = pad;
+
+	if (strcmp(soc->name, "sata") == 0)
+		padctl->sata = pad;
+
+	if (strcmp(soc->name, "usb2") == 0)
+		padctl->usb2 = pad;
+
+	if (strcmp(soc->name, "ulpi") == 0)
+		padctl->ulpi = pad;
+
+	if (strcmp(soc->name, "hsic") == 0)
+		padctl->hsic = pad;
+
+	return pad;
+}
+
+static void __tegra_xusb_remove_pads(struct tegra_xusb_padctl *padctl)
+{
+	struct tegra_xusb_pad *pad, *tmp;
+
+	list_for_each_entry_safe_reverse(pad, tmp, &padctl->pads, list) {
+		list_del(&pad->list);
+		tegra_xusb_pad_unregister(pad);
+	}
+}
+
+static void tegra_xusb_remove_pads(struct tegra_xusb_padctl *padctl)
+{
+	mutex_lock(&padctl->lock);
+	__tegra_xusb_remove_pads(padctl);
+	mutex_unlock(&padctl->lock);
+}
+
+static void tegra_xusb_lane_program(struct tegra_xusb_lane *lane)
+{
+	struct tegra_xusb_padctl *padctl = lane->pad->padctl;
+	const struct tegra_xusb_lane_soc *soc = lane->soc;
+	u32 value;
+
+	/* choose function */
+	value = padctl_readl(padctl, soc->offset);
+	value &= ~(soc->mask << soc->shift);
+	value |= lane->function << soc->shift;
+	padctl_writel(padctl, value, soc->offset);
+}
+
+static void tegra_xusb_pad_program(struct tegra_xusb_pad *pad)
+{
+	unsigned int i;
+
+	for (i = 0; i < pad->soc->num_lanes; i++) {
+		struct tegra_xusb_lane *lane;
+
+		if (pad->lanes[i]) {
+			lane = phy_get_drvdata(pad->lanes[i]);
+			tegra_xusb_lane_program(lane);
+		}
+	}
+}
+
+static int tegra_xusb_setup_pads(struct tegra_xusb_padctl *padctl)
+{
+	struct tegra_xusb_pad *pad;
+	unsigned int i;
+
+	mutex_lock(&padctl->lock);
+
+	for (i = 0; i < padctl->soc->num_pads; i++) {
+		const struct tegra_xusb_pad_soc *soc = padctl->soc->pads[i];
+		int err;
+
+		pad = tegra_xusb_pad_create(padctl, soc);
+		if (IS_ERR(pad)) {
+			err = PTR_ERR(pad);
+			dev_err(padctl->dev, "failed to create pad %s: %d\n",
+				soc->name, err);
+			__tegra_xusb_remove_pads(padctl);
+			mutex_unlock(&padctl->lock);
+			return err;
+		}
+
+		if (!pad)
+			continue;
+
+		list_add_tail(&pad->list, &padctl->pads);
+	}
+
+	list_for_each_entry(pad, &padctl->pads, list)
+		tegra_xusb_pad_program(pad);
+
+	mutex_unlock(&padctl->lock);
+	return 0;
+}
+
+static bool tegra_xusb_lane_check(struct tegra_xusb_lane *lane,
+				  const char *function)
+{
+	const char *func = lane->soc->funcs[lane->function];
+
+	return strcmp(function, func) == 0;
+}
+
+struct tegra_xusb_lane *tegra_xusb_find_lane(struct tegra_xusb_padctl *padctl,
+					     const char *type,
+					     unsigned int index)
+{
+	struct tegra_xusb_lane *lane, *hit = ERR_PTR(-ENODEV);
+	char *name;
+
+	name = kasprintf(GFP_KERNEL, "%s-%u", type, index);
+	if (!name)
+		return ERR_PTR(-ENOMEM);
+
+	list_for_each_entry(lane, &padctl->lanes, list) {
+		if (strcmp(lane->soc->name, name) == 0) {
+			hit = lane;
+			break;
+		}
+	}
+
+	kfree(name);
+	return hit;
+}
+
+struct tegra_xusb_lane *
+tegra_xusb_port_find_lane(struct tegra_xusb_port *port,
+			  const struct tegra_xusb_lane_map *map,
+			  const char *function)
+{
+	struct tegra_xusb_lane *lane, *match = ERR_PTR(-ENODEV);
+
+	for (map = map; map->type; map++) {
+		if (port->index != map->port)
+			continue;
+
+		lane = tegra_xusb_find_lane(port->padctl, map->type,
+					    map->index);
+		if (IS_ERR(lane))
+			continue;
+
+		if (!tegra_xusb_lane_check(lane, function))
+			continue;
+
+		if (!IS_ERR(match))
+			dev_err(&port->dev, "conflicting match: %s-%u / %s\n",
+				map->type, map->index, match->soc->name);
+		else
+			match = lane;
+	}
+
+	return match;
+}
+
+static struct device_node *
+tegra_xusb_find_port_node(struct tegra_xusb_padctl *padctl, const char *type,
+			  unsigned int index)
+{
+	/*
+	 * of_find_node_by_name() drops a reference, so make sure to grab one.
+	 */
+	struct device_node *np = of_node_get(padctl->dev->of_node);
+
+	np = of_find_node_by_name(np, "ports");
+	if (np) {
+		char *name;
+
+		name = kasprintf(GFP_KERNEL, "%s-%u", type, index);
+		np = of_find_node_by_name(np, name);
+		kfree(name);
+	}
+
+	return np;
+}
+
+struct tegra_xusb_port *
+tegra_xusb_find_port(struct tegra_xusb_padctl *padctl, const char *type,
+		     unsigned int index)
+{
+	struct tegra_xusb_port *port;
+	struct device_node *np;
+
+	np = tegra_xusb_find_port_node(padctl, type, index);
+	if (!np)
+		return NULL;
+
+	list_for_each_entry(port, &padctl->ports, list) {
+		if (np == port->dev.of_node) {
+			of_node_put(np);
+			return port;
+		}
+	}
+
+	of_node_put(np);
+
+	return NULL;
+}
+
+struct tegra_xusb_usb2_port *
+tegra_xusb_find_usb2_port(struct tegra_xusb_padctl *padctl, unsigned int index)
+{
+	struct tegra_xusb_port *port;
+
+	port = tegra_xusb_find_port(padctl, "usb2", index);
+	if (port)
+		return to_usb2_port(port);
+
+	return NULL;
+}
+
+struct tegra_xusb_usb3_port *
+tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl, unsigned int index)
+{
+	struct tegra_xusb_port *port;
+
+	port = tegra_xusb_find_port(padctl, "usb3", index);
+	if (port)
+		return to_usb3_port(port);
+
+	return NULL;
+}
+
+static void tegra_xusb_port_release(struct device *dev)
+{
+}
+
+static struct device_type tegra_xusb_port_type = {
+	.release = tegra_xusb_port_release,
+};
+
+static int tegra_xusb_port_init(struct tegra_xusb_port *port,
+				struct tegra_xusb_padctl *padctl,
+				struct device_node *np,
+				const char *name,
+				unsigned int index)
+{
+	int err;
+
+	INIT_LIST_HEAD(&port->list);
+	port->padctl = padctl;
+	port->index = index;
+
+	device_initialize(&port->dev);
+	port->dev.type = &tegra_xusb_port_type;
+	port->dev.of_node = of_node_get(np);
+	port->dev.parent = padctl->dev;
+
+	err = dev_set_name(&port->dev, "%s-%u", name, index);
+	if (err < 0)
+		goto unregister;
+
+	err = device_add(&port->dev);
+	if (err < 0)
+		goto unregister;
+
+	return 0;
+
+unregister:
+	device_unregister(&port->dev);
+	return err;
+}
+
+static void tegra_xusb_port_unregister(struct tegra_xusb_port *port)
+{
+	device_unregister(&port->dev);
+}
+
+static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2)
+{
+	struct tegra_xusb_port *port = &usb2->base;
+	struct device_node *np = port->dev.of_node;
+
+	usb2->internal = of_property_read_bool(np, "nvidia,internal");
+
+	usb2->supply = devm_regulator_get(&port->dev, "vbus");
+	if (IS_ERR(usb2->supply))
+		return PTR_ERR(usb2->supply);
+
+	return 0;
+}
+
+static int tegra_xusb_add_usb2_port(struct tegra_xusb_padctl *padctl,
+				    unsigned int index)
+{
+	struct tegra_xusb_usb2_port *usb2;
+	struct device_node *np;
+	int err = 0;
+
+	/*
+	 * USB2 ports don't require additional properties, but if the port is
+	 * marked as disabled there is no reason to register it.
+	 */
+	np = tegra_xusb_find_port_node(padctl, "usb2", index);
+	if (!np || !of_device_is_available(np))
+		goto out;
+
+	usb2 = devm_kzalloc(padctl->dev, sizeof(*usb2), GFP_KERNEL);
+	if (!usb2) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = tegra_xusb_port_init(&usb2->base, padctl, np, "usb2", index);
+	if (err < 0)
+		goto out;
+
+	usb2->base.ops = padctl->soc->ports.usb2.ops;
+
+	usb2->base.lane = usb2->base.ops->map(&usb2->base);
+	if (IS_ERR(usb2->base.lane)) {
+		err = PTR_ERR(usb2->base.lane);
+		goto out;
+	}
+
+	err = tegra_xusb_usb2_port_parse_dt(usb2);
+	if (err < 0) {
+		tegra_xusb_port_unregister(&usb2->base);
+		goto out;
+	}
+
+	list_add_tail(&usb2->base.list, &padctl->ports);
+
+out:
+	of_node_put(np);
+	return err;
+}
+
+static int tegra_xusb_ulpi_port_parse_dt(struct tegra_xusb_ulpi_port *ulpi)
+{
+	struct tegra_xusb_port *port = &ulpi->base;
+	struct device_node *np = port->dev.of_node;
+
+	ulpi->internal = of_property_read_bool(np, "nvidia,internal");
+
+	return 0;
+}
+
+static int tegra_xusb_add_ulpi_port(struct tegra_xusb_padctl *padctl,
+				    unsigned int index)
+{
+	struct tegra_xusb_ulpi_port *ulpi;
+	struct device_node *np;
+	int err = 0;
+
+	np = tegra_xusb_find_port_node(padctl, "ulpi", index);
+	if (!np || !of_device_is_available(np))
+		goto out;
+
+	ulpi = devm_kzalloc(padctl->dev, sizeof(*ulpi), GFP_KERNEL);
+	if (!ulpi) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = tegra_xusb_port_init(&ulpi->base, padctl, np, "ulpi", index);
+	if (err < 0)
+		goto out;
+
+	ulpi->base.ops = padctl->soc->ports.ulpi.ops;
+
+	ulpi->base.lane = ulpi->base.ops->map(&ulpi->base);
+	if (IS_ERR(ulpi->base.lane)) {
+		err = PTR_ERR(ulpi->base.lane);
+		goto out;
+	}
+
+	err = tegra_xusb_ulpi_port_parse_dt(ulpi);
+	if (err < 0) {
+		tegra_xusb_port_unregister(&ulpi->base);
+		goto out;
+	}
+
+	list_add_tail(&ulpi->base.list, &padctl->ports);
+
+out:
+	of_node_put(np);
+	return err;
+}
+
+static int tegra_xusb_hsic_port_parse_dt(struct tegra_xusb_hsic_port *hsic)
+{
+	/* XXX */
+	return 0;
+}
+
+static int tegra_xusb_add_hsic_port(struct tegra_xusb_padctl *padctl,
+				    unsigned int index)
+{
+	struct tegra_xusb_hsic_port *hsic;
+	struct device_node *np;
+	int err = 0;
+
+	np = tegra_xusb_find_port_node(padctl, "hsic", index);
+	if (!np || !of_device_is_available(np))
+		goto out;
+
+	hsic = devm_kzalloc(padctl->dev, sizeof(*hsic), GFP_KERNEL);
+	if (!hsic) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = tegra_xusb_port_init(&hsic->base, padctl, np, "hsic", index);
+	if (err < 0)
+		goto out;
+
+	hsic->base.ops = padctl->soc->ports.hsic.ops;
+
+	hsic->base.lane = hsic->base.ops->map(&hsic->base);
+	if (IS_ERR(hsic->base.lane)) {
+		err = PTR_ERR(hsic->base.lane);
+		goto out;
+	}
+
+	err = tegra_xusb_hsic_port_parse_dt(hsic);
+	if (err < 0) {
+		tegra_xusb_port_unregister(&hsic->base);
+		goto out;
+	}
+
+	list_add_tail(&hsic->base.list, &padctl->ports);
+
+out:
+	of_node_put(np);
+	return err;
+}
+
+static int tegra_xusb_usb3_port_parse_dt(struct tegra_xusb_usb3_port *usb3)
+{
+	struct tegra_xusb_port *port = &usb3->base;
+	struct device_node *np = port->dev.of_node;
+	u32 value;
+	int err;
+
+	err = of_property_read_u32(np, "nvidia,usb2-companion", &value);
+	if (err < 0) {
+		dev_err(&port->dev, "failed to read port: %d\n", err);
+		return err;
+	}
+
+	usb3->port = value;
+
+	usb3->internal = of_property_read_bool(np, "nvidia,internal");
+
+	usb3->supply = devm_regulator_get(&port->dev, "vbus");
+	if (IS_ERR(usb3->supply))
+		return PTR_ERR(usb3->supply);
+
+	return 0;
+}
+
+static int tegra_xusb_add_usb3_port(struct tegra_xusb_padctl *padctl,
+				    unsigned int index)
+{
+	struct tegra_xusb_usb3_port *usb3;
+	struct device_node *np;
+	int err = 0;
+
+	/*
+	 * If there is no supplemental configuration in the device tree the
+	 * port is unusable. But it is valid to configure only a single port,
+	 * hence return 0 instead of an error to allow ports to be optional.
+	 */
+	np = tegra_xusb_find_port_node(padctl, "usb3", index);
+	if (!np || !of_device_is_available(np))
+		goto out;
+
+	usb3 = devm_kzalloc(padctl->dev, sizeof(*usb3), GFP_KERNEL);
+	if (!usb3) {
+		err = -ENOMEM;
+		goto out;
+	}
+
+	err = tegra_xusb_port_init(&usb3->base, padctl, np, "usb3", index);
+	if (err < 0)
+		goto out;
+
+	usb3->base.ops = padctl->soc->ports.usb3.ops;
+
+	usb3->base.lane = usb3->base.ops->map(&usb3->base);
+	if (IS_ERR(usb3->base.lane)) {
+		err = PTR_ERR(usb3->base.lane);
+		goto out;
+	}
+
+	err = tegra_xusb_usb3_port_parse_dt(usb3);
+	if (err < 0) {
+		tegra_xusb_port_unregister(&usb3->base);
+		goto out;
+	}
+
+	list_add_tail(&usb3->base.list, &padctl->ports);
+
+out:
+	of_node_put(np);
+	return err;
+}
+
+static void __tegra_xusb_remove_ports(struct tegra_xusb_padctl *padctl)
+{
+	struct tegra_xusb_port *port, *tmp;
+
+	list_for_each_entry_safe_reverse(port, tmp, &padctl->ports, list) {
+		list_del(&port->list);
+		tegra_xusb_port_unregister(port);
+	}
+}
+
+static int tegra_xusb_setup_ports(struct tegra_xusb_padctl *padctl)
+{
+	struct tegra_xusb_port *port;
+	unsigned int i;
+	int err = 0;
+
+	mutex_lock(&padctl->lock);
+
+	for (i = 0; i < padctl->soc->ports.usb2.count; i++) {
+		err = tegra_xusb_add_usb2_port(padctl, i);
+		if (err < 0)
+			goto remove_ports;
+	}
+
+	for (i = 0; i < padctl->soc->ports.ulpi.count; i++) {
+		err = tegra_xusb_add_ulpi_port(padctl, i);
+		if (err < 0)
+			goto remove_ports;
+	}
+
+	for (i = 0; i < padctl->soc->ports.hsic.count; i++) {
+		err = tegra_xusb_add_hsic_port(padctl, i);
+		if (err < 0)
+			goto remove_ports;
+	}
+
+	for (i = 0; i < padctl->soc->ports.usb3.count; i++) {
+		err = tegra_xusb_add_usb3_port(padctl, i);
+		if (err < 0)
+			goto remove_ports;
+	}
+
+	list_for_each_entry(port, &padctl->ports, list) {
+		err = port->ops->enable(port);
+		if (err < 0)
+			dev_err(padctl->dev, "failed to enable port %s: %d\n",
+				dev_name(&port->dev), err);
+	}
+
+	goto unlock;
+
+remove_ports:
+	__tegra_xusb_remove_ports(padctl);
+unlock:
+	mutex_unlock(&padctl->lock);
+	return err;
+}
+
+static void tegra_xusb_remove_ports(struct tegra_xusb_padctl *padctl)
+{
+	mutex_lock(&padctl->lock);
+	__tegra_xusb_remove_ports(padctl);
+	mutex_unlock(&padctl->lock);
+}
+
+static int tegra_xusb_padctl_probe(struct platform_device *pdev)
+{
+	struct device_node *np = of_node_get(pdev->dev.of_node);
+	const struct tegra_xusb_padctl_soc *soc;
+	struct tegra_xusb_padctl *padctl;
+	const struct of_device_id *match;
+	struct resource *res;
+	int err;
+
+	/* for backwards compatibility with old device trees */
+	np = of_find_node_by_name(np, "pads");
+	if (!np) {
+		dev_warn(&pdev->dev, "deprecated DT, using legacy driver\n");
+		return tegra_xusb_padctl_legacy_probe(pdev);
+	}
+
+	of_node_put(np);
+
+	match = of_match_node(tegra_xusb_padctl_of_match, pdev->dev.of_node);
+	soc = match->data;
+
+	padctl = soc->ops->probe(&pdev->dev, soc);
+	if (IS_ERR(padctl))
+		return PTR_ERR(padctl);
+
+	platform_set_drvdata(pdev, padctl);
+	INIT_LIST_HEAD(&padctl->ports);
+	INIT_LIST_HEAD(&padctl->lanes);
+	INIT_LIST_HEAD(&padctl->pads);
+	mutex_init(&padctl->lock);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	padctl->regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(padctl->regs)) {
+		err = PTR_ERR(padctl->regs);
+		goto remove;
+	}
+
+	padctl->rst = devm_reset_control_get(&pdev->dev, NULL);
+	if (IS_ERR(padctl->rst)) {
+		err = PTR_ERR(padctl->rst);
+		goto remove;
+	}
+
+	err = reset_control_deassert(padctl->rst);
+	if (err < 0)
+		goto remove;
+
+	err = tegra_xusb_setup_pads(padctl);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to setup pads: %d\n", err);
+		goto reset;
+	}
+
+	err = tegra_xusb_setup_ports(padctl);
+	if (err) {
+		dev_err(&pdev->dev, "failed to setup XUSB ports: %d\n", err);
+		goto remove_pads;
+	}
+
+	return 0;
+
+remove_pads:
+	tegra_xusb_remove_pads(padctl);
+reset:
+	reset_control_assert(padctl->rst);
+remove:
+	soc->ops->remove(padctl);
+	return err;
+}
+
+static int tegra_xusb_padctl_remove(struct platform_device *pdev)
+{
+	struct tegra_xusb_padctl *padctl = platform_get_drvdata(pdev);
+	int err;
+
+	tegra_xusb_remove_ports(padctl);
+	tegra_xusb_remove_pads(padctl);
+
+	err = reset_control_assert(padctl->rst);
+	if (err < 0)
+		dev_err(&pdev->dev, "failed to assert reset: %d\n", err);
+
+	padctl->soc->ops->remove(padctl);
+
+	return err;
+}
+
+static struct platform_driver tegra_xusb_padctl_driver = {
+	.driver = {
+		.name = "tegra-xusb-padctl",
+		.of_match_table = tegra_xusb_padctl_of_match,
+	},
+	.probe = tegra_xusb_padctl_probe,
+	.remove = tegra_xusb_padctl_remove,
+};
+module_platform_driver(tegra_xusb_padctl_driver);
+
+struct tegra_xusb_padctl *tegra_xusb_padctl_get(struct device *dev)
+{
+	struct tegra_xusb_padctl *padctl;
+	struct platform_device *pdev;
+	struct device_node *np;
+
+	np = of_parse_phandle(dev->of_node, "nvidia,xusb-padctl", 0);
+	if (!np)
+		return ERR_PTR(-EINVAL);
+
+	/*
+	 * This is slightly ugly. A better implementation would be to keep a
+	 * registry of pad controllers, but since there will almost certainly
+	 * only ever be one per SoC that would be a little overkill.
+	 */
+	pdev = of_find_device_by_node(np);
+	if (!pdev) {
+		of_node_put(np);
+		return ERR_PTR(-ENODEV);
+	}
+
+	of_node_put(np);
+
+	padctl = platform_get_drvdata(pdev);
+	if (!padctl) {
+		put_device(&pdev->dev);
+		return ERR_PTR(-EPROBE_DEFER);
+	}
+
+	return padctl;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_get);
+
+void tegra_xusb_padctl_put(struct tegra_xusb_padctl *padctl)
+{
+	if (padctl)
+		put_device(padctl->dev);
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_put);
+
+int tegra_xusb_padctl_usb3_save_context(struct tegra_xusb_padctl *padctl,
+					unsigned int port)
+{
+	if (padctl->soc->ops->usb3_save_context)
+		return padctl->soc->ops->usb3_save_context(padctl, port);
+
+	return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_usb3_save_context);
+
+int tegra_xusb_padctl_hsic_set_idle(struct tegra_xusb_padctl *padctl,
+				    unsigned int port, bool idle)
+{
+	if (padctl->soc->ops->hsic_set_idle)
+		return padctl->soc->ops->hsic_set_idle(padctl, port, idle);
+
+	return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_hsic_set_idle);
+
+int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl,
+					   unsigned int port, bool enable)
+{
+	if (padctl->soc->ops->usb3_set_lfps_detect)
+		return padctl->soc->ops->usb3_set_lfps_detect(padctl, port,
+							      enable);
+
+	return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_usb3_set_lfps_detect);
+
+MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
+MODULE_DESCRIPTION("Tegra XUSB Pad Controller driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/phy/tegra/xusb.h b/drivers/phy/tegra/xusb.h
new file mode 100644
index 000000000000..b49dbc36efa3
--- /dev/null
+++ b/drivers/phy/tegra/xusb.h
@@ -0,0 +1,421 @@
+/*
+ * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2015, Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef __PHY_TEGRA_XUSB_H
+#define __PHY_TEGRA_XUSB_H
+
+#include <linux/io.h>
+#include <linux/mutex.h>
+#include <linux/workqueue.h>
+
+/* legacy entry points for backwards-compatibility */
+int tegra_xusb_padctl_legacy_probe(struct platform_device *pdev);
+int tegra_xusb_padctl_legacy_remove(struct platform_device *pdev);
+
+struct phy;
+struct phy_provider;
+struct platform_device;
+struct regulator;
+
+/*
+ * lanes
+ */
+struct tegra_xusb_lane_soc {
+	const char *name;
+
+	unsigned int offset;
+	unsigned int shift;
+	unsigned int mask;
+
+	const char * const *funcs;
+	unsigned int num_funcs;
+};
+
+struct tegra_xusb_lane {
+	const struct tegra_xusb_lane_soc *soc;
+	struct tegra_xusb_pad *pad;
+	struct device_node *np;
+	struct list_head list;
+	unsigned int function;
+	unsigned int index;
+};
+
+int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane,
+			     struct device_node *np);
+
+struct tegra_xusb_usb2_lane {
+	struct tegra_xusb_lane base;
+
+	u32 hs_curr_level_offset;
+};
+
+static inline struct tegra_xusb_usb2_lane *
+to_usb2_lane(struct tegra_xusb_lane *lane)
+{
+	return container_of(lane, struct tegra_xusb_usb2_lane, base);
+}
+
+struct tegra_xusb_ulpi_lane {
+	struct tegra_xusb_lane base;
+};
+
+static inline struct tegra_xusb_ulpi_lane *
+to_ulpi_lane(struct tegra_xusb_lane *lane)
+{
+	return container_of(lane, struct tegra_xusb_ulpi_lane, base);
+}
+
+struct tegra_xusb_hsic_lane {
+	struct tegra_xusb_lane base;
+
+	u32 strobe_trim;
+	u32 rx_strobe_trim;
+	u32 rx_data_trim;
+	u32 tx_rtune_n;
+	u32 tx_rtune_p;
+	u32 tx_rslew_n;
+	u32 tx_rslew_p;
+	bool auto_term;
+};
+
+static inline struct tegra_xusb_hsic_lane *
+to_hsic_lane(struct tegra_xusb_lane *lane)
+{
+	return container_of(lane, struct tegra_xusb_hsic_lane, base);
+}
+
+struct tegra_xusb_pcie_lane {
+	struct tegra_xusb_lane base;
+};
+
+static inline struct tegra_xusb_pcie_lane *
+to_pcie_lane(struct tegra_xusb_lane *lane)
+{
+	return container_of(lane, struct tegra_xusb_pcie_lane, base);
+}
+
+struct tegra_xusb_sata_lane {
+	struct tegra_xusb_lane base;
+};
+
+static inline struct tegra_xusb_sata_lane *
+to_sata_lane(struct tegra_xusb_lane *lane)
+{
+	return container_of(lane, struct tegra_xusb_sata_lane, base);
+}
+
+struct tegra_xusb_lane_ops {
+	struct tegra_xusb_lane *(*probe)(struct tegra_xusb_pad *pad,
+					 struct device_node *np,
+					 unsigned int index);
+	void (*remove)(struct tegra_xusb_lane *lane);
+};
+
+/*
+ * pads
+ */
+struct tegra_xusb_pad_soc;
+struct tegra_xusb_padctl;
+
+struct tegra_xusb_pad_ops {
+	struct tegra_xusb_pad *(*probe)(struct tegra_xusb_padctl *padctl,
+					const struct tegra_xusb_pad_soc *soc,
+					struct device_node *np);
+	void (*remove)(struct tegra_xusb_pad *pad);
+};
+
+struct tegra_xusb_pad_soc {
+	const char *name;
+
+	const struct tegra_xusb_lane_soc *lanes;
+	unsigned int num_lanes;
+
+	const struct tegra_xusb_pad_ops *ops;
+};
+
+struct tegra_xusb_pad {
+	const struct tegra_xusb_pad_soc *soc;
+	struct tegra_xusb_padctl *padctl;
+	struct phy_provider *provider;
+	struct phy **lanes;
+	struct device dev;
+
+	const struct tegra_xusb_lane_ops *ops;
+
+	struct list_head list;
+};
+
+static inline struct tegra_xusb_pad *to_tegra_xusb_pad(struct device *dev)
+{
+	return container_of(dev, struct tegra_xusb_pad, dev);
+}
+
+int tegra_xusb_pad_init(struct tegra_xusb_pad *pad,
+			struct tegra_xusb_padctl *padctl,
+			struct device_node *np);
+int tegra_xusb_pad_register(struct tegra_xusb_pad *pad,
+			    const struct phy_ops *ops);
+void tegra_xusb_pad_unregister(struct tegra_xusb_pad *pad);
+
+struct tegra_xusb_usb2_pad {
+	struct tegra_xusb_pad base;
+
+	struct clk *clk;
+	unsigned int enable;
+	struct mutex lock;
+};
+
+static inline struct tegra_xusb_usb2_pad *
+to_usb2_pad(struct tegra_xusb_pad *pad)
+{
+	return container_of(pad, struct tegra_xusb_usb2_pad, base);
+}
+
+struct tegra_xusb_ulpi_pad {
+	struct tegra_xusb_pad base;
+};
+
+static inline struct tegra_xusb_ulpi_pad *
+to_ulpi_pad(struct tegra_xusb_pad *pad)
+{
+	return container_of(pad, struct tegra_xusb_ulpi_pad, base);
+}
+
+struct tegra_xusb_hsic_pad {
+	struct tegra_xusb_pad base;
+
+	struct regulator *supply;
+	struct clk *clk;
+};
+
+static inline struct tegra_xusb_hsic_pad *
+to_hsic_pad(struct tegra_xusb_pad *pad)
+{
+	return container_of(pad, struct tegra_xusb_hsic_pad, base);
+}
+
+struct tegra_xusb_pcie_pad {
+	struct tegra_xusb_pad base;
+
+	struct reset_control *rst;
+	struct clk *pll;
+
+	unsigned int enable;
+};
+
+static inline struct tegra_xusb_pcie_pad *
+to_pcie_pad(struct tegra_xusb_pad *pad)
+{
+	return container_of(pad, struct tegra_xusb_pcie_pad, base);
+}
+
+struct tegra_xusb_sata_pad {
+	struct tegra_xusb_pad base;
+
+	struct reset_control *rst;
+	struct clk *pll;
+
+	unsigned int enable;
+};
+
+static inline struct tegra_xusb_sata_pad *
+to_sata_pad(struct tegra_xusb_pad *pad)
+{
+	return container_of(pad, struct tegra_xusb_sata_pad, base);
+}
+
+/*
+ * ports
+ */
+struct tegra_xusb_port_ops;
+
+struct tegra_xusb_port {
+	struct tegra_xusb_padctl *padctl;
+	struct tegra_xusb_lane *lane;
+	unsigned int index;
+
+	struct list_head list;
+	struct device dev;
+
+	const struct tegra_xusb_port_ops *ops;
+};
+
+struct tegra_xusb_lane_map {
+	unsigned int port;
+	const char *type;
+	unsigned int index;
+	const char *func;
+};
+
+struct tegra_xusb_lane *
+tegra_xusb_port_find_lane(struct tegra_xusb_port *port,
+			  const struct tegra_xusb_lane_map *map,
+			  const char *function);
+
+struct tegra_xusb_port *
+tegra_xusb_find_port(struct tegra_xusb_padctl *padctl, const char *type,
+		     unsigned int index);
+
+struct tegra_xusb_usb2_port {
+	struct tegra_xusb_port base;
+
+	struct regulator *supply;
+	bool internal;
+};
+
+static inline struct tegra_xusb_usb2_port *
+to_usb2_port(struct tegra_xusb_port *port)
+{
+	return container_of(port, struct tegra_xusb_usb2_port, base);
+}
+
+struct tegra_xusb_usb2_port *
+tegra_xusb_find_usb2_port(struct tegra_xusb_padctl *padctl,
+			  unsigned int index);
+
+struct tegra_xusb_ulpi_port {
+	struct tegra_xusb_port base;
+
+	struct regulator *supply;
+	bool internal;
+};
+
+static inline struct tegra_xusb_ulpi_port *
+to_ulpi_port(struct tegra_xusb_port *port)
+{
+	return container_of(port, struct tegra_xusb_ulpi_port, base);
+}
+
+struct tegra_xusb_hsic_port {
+	struct tegra_xusb_port base;
+};
+
+static inline struct tegra_xusb_hsic_port *
+to_hsic_port(struct tegra_xusb_port *port)
+{
+	return container_of(port, struct tegra_xusb_hsic_port, base);
+}
+
+struct tegra_xusb_usb3_port {
+	struct tegra_xusb_port base;
+	struct regulator *supply;
+	bool context_saved;
+	unsigned int port;
+	bool internal;
+
+	u32 tap1;
+	u32 amp;
+	u32 ctle_z;
+	u32 ctle_g;
+};
+
+static inline struct tegra_xusb_usb3_port *
+to_usb3_port(struct tegra_xusb_port *port)
+{
+	return container_of(port, struct tegra_xusb_usb3_port, base);
+}
+
+struct tegra_xusb_usb3_port *
+tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl,
+			  unsigned int index);
+
+struct tegra_xusb_port_ops {
+	int (*enable)(struct tegra_xusb_port *port);
+	void (*disable)(struct tegra_xusb_port *port);
+	struct tegra_xusb_lane *(*map)(struct tegra_xusb_port *port);
+};
+
+/*
+ * pad controller
+ */
+struct tegra_xusb_padctl_soc;
+
+struct tegra_xusb_padctl_ops {
+	struct tegra_xusb_padctl *
+		(*probe)(struct device *dev,
+			 const struct tegra_xusb_padctl_soc *soc);
+	void (*remove)(struct tegra_xusb_padctl *padctl);
+
+	int (*usb3_save_context)(struct tegra_xusb_padctl *padctl,
+				 unsigned int index);
+	int (*hsic_set_idle)(struct tegra_xusb_padctl *padctl,
+			     unsigned int index, bool idle);
+	int (*usb3_set_lfps_detect)(struct tegra_xusb_padctl *padctl,
+				    unsigned int index, bool enable);
+};
+
+struct tegra_xusb_padctl_soc {
+	const struct tegra_xusb_pad_soc * const *pads;
+	unsigned int num_pads;
+
+	struct {
+		struct {
+			const struct tegra_xusb_port_ops *ops;
+			unsigned int count;
+		} usb2, ulpi, hsic, usb3;
+	} ports;
+
+	const struct tegra_xusb_padctl_ops *ops;
+};
+
+struct tegra_xusb_padctl {
+	struct device *dev;
+	void __iomem *regs;
+	struct mutex lock;
+	struct reset_control *rst;
+
+	const struct tegra_xusb_padctl_soc *soc;
+
+	struct tegra_xusb_pad *pcie;
+	struct tegra_xusb_pad *sata;
+	struct tegra_xusb_pad *ulpi;
+	struct tegra_xusb_pad *usb2;
+	struct tegra_xusb_pad *hsic;
+
+	struct list_head ports;
+	struct list_head lanes;
+	struct list_head pads;
+
+	unsigned int enable;
+
+	struct clk *clk;
+};
+
+static inline void padctl_writel(struct tegra_xusb_padctl *padctl, u32 value,
+				 unsigned long offset)
+{
+	dev_dbg(padctl->dev, "%08lx < %08x\n", offset, value);
+	writel(value, padctl->regs + offset);
+}
+
+static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
+			       unsigned long offset)
+{
+	u32 value = readl(padctl->regs + offset);
+	dev_dbg(padctl->dev, "%08lx > %08x\n", offset, value);
+	return value;
+}
+
+struct tegra_xusb_lane *tegra_xusb_find_lane(struct tegra_xusb_padctl *padctl,
+					     const char *name,
+					     unsigned int index);
+
+#if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
+extern const struct tegra_xusb_padctl_soc tegra124_xusb_padctl_soc;
+#endif
+#if defined(CONFIG_ARCH_TEGRA_210_SOC)
+extern const struct tegra_xusb_padctl_soc tegra210_xusb_padctl_soc;
+#endif
+
+#endif /* __PHY_TEGRA_XUSB_H */