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-rw-r--r--arch/arm/mach-imx/Kconfig31
-rw-r--r--arch/arm/mach-imx/Makefile6
-rw-r--r--arch/arm/mach-imx/anatop.c34
-rw-r--r--arch/arm/mach-imx/clk-cpu.c107
-rw-r--r--arch/arm/mach-imx/clk-imx51-imx53.c14
-rw-r--r--arch/arm/mach-imx/clk-vf610.c21
-rw-r--r--arch/arm/mach-imx/clk.h4
-rw-r--r--arch/arm/mach-imx/common.h2
-rw-r--r--arch/arm/mach-imx/mach-imx53.c2
-rw-r--r--arch/arm/mach-imx/mach-imx6sx.c51
-rw-r--r--arch/arm/mach-imx/mach-ls1021a.c22
-rw-r--r--arch/arm/mach-imx/mmdc.c17
-rw-r--r--arch/arm/mach-imx/mxc.h2
-rw-r--r--arch/arm/mach-imx/platsmp.c33
-rw-r--r--arch/arm/mach-imx/pm-imx6.c10
-rw-r--r--arch/arm/mach-imx/suspend-imx6.S14
16 files changed, 345 insertions, 25 deletions
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 11b2957f792b..e8627e04e1e6 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -633,12 +633,41 @@ config SOC_VF610
bool "Vybrid Family VF610 support"
select ARM_GIC
select PINCTRL_VF610
- select VF_PIT_TIMER
select PL310_ERRATA_769419 if CACHE_L2X0
help
This enable support for Freescale Vybrid VF610 processor.
+choice
+ prompt "Clocksource for scheduler clock"
+ depends on SOC_VF610
+ default VF_USE_ARM_GLOBAL_TIMER
+
+ config VF_USE_ARM_GLOBAL_TIMER
+ bool "Use ARM Global Timer"
+ select ARM_GLOBAL_TIMER
+ select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
+ help
+ Use the ARM Global Timer as clocksource
+
+ config VF_USE_PIT_TIMER
+ bool "Use PIT timer"
+ select VF_PIT_TIMER
+ help
+ Use SoC Periodic Interrupt Timer (PIT) as clocksource
+
+endchoice
+
+config SOC_LS1021A
+ bool "Freescale LS1021A support"
+ select ARM_GIC
+ select HAVE_ARM_ARCH_TIMER
+ select PCI_DOMAINS if PCI
+ select ZONE_DMA if ARM_LPAE
+
+ help
+ This enable support for Freescale LS1021A processor.
+
endif
source "arch/arm/mach-imx/devices/Kconfig"
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 6e4fcd8339cd..f5ac685a29fc 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -12,7 +12,7 @@ obj-$(CONFIG_SOC_IMX31) += mm-imx3.o cpu-imx31.o clk-imx31.o iomux-imx31.o ehci-
obj-$(CONFIG_SOC_IMX35) += mm-imx3.o cpu-imx35.o clk-imx35.o ehci-imx35.o pm-imx3.o
imx5-pm-$(CONFIG_PM) += pm-imx5.o
-obj-$(CONFIG_SOC_IMX5) += cpu-imx5.o clk-imx51-imx53.o $(imx5-pm-y)
+obj-$(CONFIG_SOC_IMX5) += cpu-imx5.o clk-imx51-imx53.o clk-cpu.o $(imx5-pm-y)
obj-$(CONFIG_COMMON_CLK) += clk-pllv1.o clk-pllv2.o clk-pllv3.o clk-gate2.o \
clk-pfd.o clk-busy.o clk.o \
@@ -89,7 +89,7 @@ obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o
obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o
obj-$(CONFIG_HAVE_IMX_SRC) += src.o
-ifdef CONFIG_SOC_IMX6
+ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_LS1021A),)
AFLAGS_headsmp.o :=-Wa,-march=armv7-a
obj-$(CONFIG_SMP) += headsmp.o platsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
@@ -110,4 +110,6 @@ obj-$(CONFIG_SOC_IMX53) += mach-imx53.o
obj-$(CONFIG_SOC_VF610) += clk-vf610.o mach-vf610.o
+obj-$(CONFIG_SOC_LS1021A) += mach-ls1021a.o
+
obj-y += devices/
diff --git a/arch/arm/mach-imx/anatop.c b/arch/arm/mach-imx/anatop.c
index 8259a625a920..7f262fe4ba77 100644
--- a/arch/arm/mach-imx/anatop.c
+++ b/arch/arm/mach-imx/anatop.c
@@ -30,8 +30,11 @@
#define ANADIG_DIGPROG_IMX6SL 0x280
#define BM_ANADIG_REG_2P5_ENABLE_WEAK_LINREG 0x40000
+#define BM_ANADIG_REG_2P5_ENABLE_PULLDOWN 0x8
#define BM_ANADIG_REG_CORE_FET_ODRIVE 0x20000000
#define BM_ANADIG_ANA_MISC0_STOP_MODE_CONFIG 0x1000
+/* Below MISC0_DISCON_HIGH_SNVS is only for i.MX6SL */
+#define BM_ANADIG_ANA_MISC0_DISCON_HIGH_SNVS 0x2000
#define BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B 0x80000
#define BM_ANADIG_USB_CHRG_DETECT_EN_B 0x100000
@@ -56,16 +59,43 @@ static void imx_anatop_enable_fet_odrive(bool enable)
BM_ANADIG_REG_CORE_FET_ODRIVE);
}
+static inline void imx_anatop_enable_2p5_pulldown(bool enable)
+{
+ regmap_write(anatop, ANADIG_REG_2P5 + (enable ? REG_SET : REG_CLR),
+ BM_ANADIG_REG_2P5_ENABLE_PULLDOWN);
+}
+
+static inline void imx_anatop_disconnect_high_snvs(bool enable)
+{
+ regmap_write(anatop, ANADIG_ANA_MISC0 + (enable ? REG_SET : REG_CLR),
+ BM_ANADIG_ANA_MISC0_DISCON_HIGH_SNVS);
+}
+
void imx_anatop_pre_suspend(void)
{
- imx_anatop_enable_weak2p5(true);
+ if (imx_mmdc_get_ddr_type() == IMX_DDR_TYPE_LPDDR2)
+ imx_anatop_enable_2p5_pulldown(true);
+ else
+ imx_anatop_enable_weak2p5(true);
+
imx_anatop_enable_fet_odrive(true);
+
+ if (cpu_is_imx6sl())
+ imx_anatop_disconnect_high_snvs(true);
}
void imx_anatop_post_resume(void)
{
+ if (imx_mmdc_get_ddr_type() == IMX_DDR_TYPE_LPDDR2)
+ imx_anatop_enable_2p5_pulldown(false);
+ else
+ imx_anatop_enable_weak2p5(false);
+
imx_anatop_enable_fet_odrive(false);
- imx_anatop_enable_weak2p5(false);
+
+ if (cpu_is_imx6sl())
+ imx_anatop_disconnect_high_snvs(false);
+
}
static void imx_anatop_usb_chrg_detect_disable(void)
diff --git a/arch/arm/mach-imx/clk-cpu.c b/arch/arm/mach-imx/clk-cpu.c
new file mode 100644
index 000000000000..aa1c345e2a19
--- /dev/null
+++ b/arch/arm/mach-imx/clk-cpu.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2014 Lucas Stach <l.stach@pengutronix.de>, Pengutronix
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/slab.h>
+
+struct clk_cpu {
+ struct clk_hw hw;
+ struct clk *div;
+ struct clk *mux;
+ struct clk *pll;
+ struct clk *step;
+};
+
+static inline struct clk_cpu *to_clk_cpu(struct clk_hw *hw)
+{
+ return container_of(hw, struct clk_cpu, hw);
+}
+
+static unsigned long clk_cpu_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_cpu *cpu = to_clk_cpu(hw);
+
+ return clk_get_rate(cpu->div);
+}
+
+static long clk_cpu_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ struct clk_cpu *cpu = to_clk_cpu(hw);
+
+ return clk_round_rate(cpu->pll, rate);
+}
+
+static int clk_cpu_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_cpu *cpu = to_clk_cpu(hw);
+ int ret;
+
+ /* switch to PLL bypass clock */
+ ret = clk_set_parent(cpu->mux, cpu->step);
+ if (ret)
+ return ret;
+
+ /* reprogram PLL */
+ ret = clk_set_rate(cpu->pll, rate);
+ if (ret) {
+ clk_set_parent(cpu->mux, cpu->pll);
+ return ret;
+ }
+ /* switch back to PLL clock */
+ clk_set_parent(cpu->mux, cpu->pll);
+
+ /* Ensure the divider is what we expect */
+ clk_set_rate(cpu->div, rate);
+
+ return 0;
+}
+
+static const struct clk_ops clk_cpu_ops = {
+ .recalc_rate = clk_cpu_recalc_rate,
+ .round_rate = clk_cpu_round_rate,
+ .set_rate = clk_cpu_set_rate,
+};
+
+struct clk *imx_clk_cpu(const char *name, const char *parent_name,
+ struct clk *div, struct clk *mux, struct clk *pll,
+ struct clk *step)
+{
+ struct clk_cpu *cpu;
+ struct clk *clk;
+ struct clk_init_data init;
+
+ cpu = kzalloc(sizeof(*cpu), GFP_KERNEL);
+ if (!cpu)
+ return ERR_PTR(-ENOMEM);
+
+ cpu->div = div;
+ cpu->mux = mux;
+ cpu->pll = pll;
+ cpu->step = step;
+
+ init.name = name;
+ init.ops = &clk_cpu_ops;
+ init.flags = 0;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ cpu->hw.init = &init;
+
+ clk = clk_register(NULL, &cpu->hw);
+ if (IS_ERR(clk))
+ kfree(cpu);
+
+ return clk;
+}
diff --git a/arch/arm/mach-imx/clk-imx51-imx53.c b/arch/arm/mach-imx/clk-imx51-imx53.c
index 72d65214223e..0f7e536147cb 100644
--- a/arch/arm/mach-imx/clk-imx51-imx53.c
+++ b/arch/arm/mach-imx/clk-imx51-imx53.c
@@ -125,6 +125,8 @@ static const char *mx53_spdif_xtal_sel[] = { "osc", "ckih", "ckih2", "pll4_sw",
static const char *spdif_sel[] = { "pll1_sw", "pll2_sw", "pll3_sw", "spdif_xtal_sel", };
static const char *spdif0_com_sel[] = { "spdif0_podf", "ssi1_root_gate", };
static const char *mx51_spdif1_com_sel[] = { "spdif1_podf", "ssi2_root_gate", };
+static const char *step_sels[] = { "lp_apm", };
+static const char *cpu_podf_sels[] = { "pll1_sw", "step_sel" };
static struct clk *clk[IMX5_CLK_END];
static struct clk_onecell_data clk_data;
@@ -193,7 +195,9 @@ static void __init mx5_clocks_common_init(void __iomem *ccm_base)
clk[IMX5_CLK_USB_PHY_PODF] = imx_clk_divider("usb_phy_podf", "usb_phy_pred", MXC_CCM_CDCDR, 0, 3);
clk[IMX5_CLK_USB_PHY_SEL] = imx_clk_mux("usb_phy_sel", MXC_CCM_CSCMR1, 26, 1,
usb_phy_sel_str, ARRAY_SIZE(usb_phy_sel_str));
- clk[IMX5_CLK_CPU_PODF] = imx_clk_divider("cpu_podf", "pll1_sw", MXC_CCM_CACRR, 0, 3);
+ clk[IMX5_CLK_STEP_SEL] = imx_clk_mux("step_sel", MXC_CCM_CCSR, 7, 2, step_sels, ARRAY_SIZE(step_sels));
+ clk[IMX5_CLK_CPU_PODF_SEL] = imx_clk_mux("cpu_podf_sel", MXC_CCM_CCSR, 2, 1, cpu_podf_sels, ARRAY_SIZE(cpu_podf_sels));
+ clk[IMX5_CLK_CPU_PODF] = imx_clk_divider("cpu_podf", "cpu_podf_sel", MXC_CCM_CACRR, 0, 3);
clk[IMX5_CLK_DI_PRED] = imx_clk_divider("di_pred", "pll3_sw", MXC_CCM_CDCDR, 6, 3);
clk[IMX5_CLK_IIM_GATE] = imx_clk_gate2("iim_gate", "ipg", MXC_CCM_CCGR0, 30);
clk[IMX5_CLK_UART1_IPG_GATE] = imx_clk_gate2("uart1_ipg_gate", "ipg", MXC_CCM_CCGR1, 6);
@@ -537,6 +541,11 @@ static void __init mx53_clocks_init(struct device_node *np)
clk[IMX5_CLK_CKO2] = imx_clk_gate2("cko2", "cko2_podf", MXC_CCM_CCOSR, 24);
clk[IMX5_CLK_SPDIF_XTAL_SEL] = imx_clk_mux("spdif_xtal_sel", MXC_CCM_CSCMR1, 2, 2,
mx53_spdif_xtal_sel, ARRAY_SIZE(mx53_spdif_xtal_sel));
+ clk[IMX5_CLK_ARM] = imx_clk_cpu("arm", "cpu_podf",
+ clk[IMX5_CLK_CPU_PODF],
+ clk[IMX5_CLK_CPU_PODF_SEL],
+ clk[IMX5_CLK_PLL1_SW],
+ clk[IMX5_CLK_STEP_SEL]);
imx_check_clocks(clk, ARRAY_SIZE(clk));
@@ -551,6 +560,9 @@ static void __init mx53_clocks_init(struct device_node *np)
/* move can bus clk to 24MHz */
clk_set_parent(clk[IMX5_CLK_CAN_SEL], clk[IMX5_CLK_LP_APM]);
+ /* make sure step clock is running from 24MHz */
+ clk_set_parent(clk[IMX5_CLK_STEP_SEL], clk[IMX5_CLK_LP_APM]);
+
clk_prepare_enable(clk[IMX5_CLK_IIM_GATE]);
imx_print_silicon_rev("i.MX53", mx53_revision());
clk_disable_unprepare(clk[IMX5_CLK_IIM_GATE]);
diff --git a/arch/arm/mach-imx/clk-vf610.c b/arch/arm/mach-imx/clk-vf610.c
index 409637254594..5937ddee1a99 100644
--- a/arch/arm/mach-imx/clk-vf610.c
+++ b/arch/arm/mach-imx/clk-vf610.c
@@ -120,6 +120,17 @@ static unsigned int const clks_init_on[] __initconst = {
VF610_CLK_DDR_SEL,
};
+static struct clk * __init vf610_get_fixed_clock(
+ struct device_node *ccm_node, const char *name)
+{
+ struct clk *clk = of_clk_get_by_name(ccm_node, name);
+
+ /* Backward compatibility if device tree is missing clks assignments */
+ if (IS_ERR(clk))
+ clk = imx_obtain_fixed_clock(name, 0);
+ return clk;
+};
+
static void __init vf610_clocks_init(struct device_node *ccm_node)
{
struct device_node *np;
@@ -130,13 +141,13 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
clk[VF610_CLK_SIRC_32K] = imx_clk_fixed("sirc_32k", 32000);
clk[VF610_CLK_FIRC] = imx_clk_fixed("firc", 24000000);
- clk[VF610_CLK_SXOSC] = imx_obtain_fixed_clock("sxosc", 0);
- clk[VF610_CLK_FXOSC] = imx_obtain_fixed_clock("fxosc", 0);
- clk[VF610_CLK_AUDIO_EXT] = imx_obtain_fixed_clock("audio_ext", 0);
- clk[VF610_CLK_ENET_EXT] = imx_obtain_fixed_clock("enet_ext", 0);
+ clk[VF610_CLK_SXOSC] = vf610_get_fixed_clock(ccm_node, "sxosc");
+ clk[VF610_CLK_FXOSC] = vf610_get_fixed_clock(ccm_node, "fxosc");
+ clk[VF610_CLK_AUDIO_EXT] = vf610_get_fixed_clock(ccm_node, "audio_ext");
+ clk[VF610_CLK_ENET_EXT] = vf610_get_fixed_clock(ccm_node, "enet_ext");
/* Clock source from external clock via LVDs PAD */
- clk[VF610_CLK_ANACLK1] = imx_obtain_fixed_clock("anaclk1", 0);
+ clk[VF610_CLK_ANACLK1] = vf610_get_fixed_clock(ccm_node, "anaclk1");
clk[VF610_CLK_FXOSC_HALF] = imx_clk_fixed_factor("fxosc_half", "fxosc", 1, 2);
diff --git a/arch/arm/mach-imx/clk.h b/arch/arm/mach-imx/clk.h
index 4cdf8b6a74e8..5ef82e2f8fc5 100644
--- a/arch/arm/mach-imx/clk.h
+++ b/arch/arm/mach-imx/clk.h
@@ -131,4 +131,8 @@ static inline struct clk *imx_clk_fixed_factor(const char *name,
CLK_SET_RATE_PARENT, mult, div);
}
+struct clk *imx_clk_cpu(const char *name, const char *parent_name,
+ struct clk *div, struct clk *mux, struct clk *pll,
+ struct clk *step);
+
#endif
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
index 3d383cb5e6d1..cfcdb623d78f 100644
--- a/arch/arm/mach-imx/common.h
+++ b/arch/arm/mach-imx/common.h
@@ -115,6 +115,7 @@ void imx_anatop_post_resume(void);
int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode);
void imx6q_set_int_mem_clk_lpm(bool enable);
void imx6sl_set_wait_clk(bool enter);
+int imx_mmdc_get_ddr_type(void);
void imx_cpu_die(unsigned int cpu);
int imx_cpu_kill(unsigned int cpu);
@@ -156,5 +157,6 @@ static inline void imx_init_l2cache(void) {}
#endif
extern struct smp_operations imx_smp_ops;
+extern struct smp_operations ls1021a_smp_ops;
#endif
diff --git a/arch/arm/mach-imx/mach-imx53.c b/arch/arm/mach-imx/mach-imx53.c
index 18b5c5c136db..86316a979297 100644
--- a/arch/arm/mach-imx/mach-imx53.c
+++ b/arch/arm/mach-imx/mach-imx53.c
@@ -40,6 +40,8 @@ static void __init imx53_dt_init(void)
static void __init imx53_init_late(void)
{
imx53_pm_init();
+
+ platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
}
static const char * const imx53_dt_board_compat[] __initconst = {
diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c
index 4111c0fa8d09..7a96c6577234 100644
--- a/arch/arm/mach-imx/mach-imx6sx.c
+++ b/arch/arm/mach-imx/mach-imx6sx.c
@@ -8,12 +8,62 @@
#include <linux/irqchip.h>
#include <linux/of_platform.h>
+#include <linux/phy.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "common.h"
#include "cpuidle.h"
+static int ar8031_phy_fixup(struct phy_device *dev)
+{
+ u16 val;
+
+ /* Set RGMII IO voltage to 1.8V */
+ phy_write(dev, 0x1d, 0x1f);
+ phy_write(dev, 0x1e, 0x8);
+
+ /* introduce tx clock delay */
+ phy_write(dev, 0x1d, 0x5);
+ val = phy_read(dev, 0x1e);
+ val |= 0x0100;
+ phy_write(dev, 0x1e, val);
+
+ return 0;
+}
+
+#define PHY_ID_AR8031 0x004dd074
+static void __init imx6sx_enet_phy_init(void)
+{
+ if (IS_BUILTIN(CONFIG_PHYLIB))
+ phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
+ ar8031_phy_fixup);
+}
+
+static void __init imx6sx_enet_clk_sel(void)
+{
+ struct regmap *gpr;
+
+ gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sx-iomuxc-gpr");
+ if (!IS_ERR(gpr)) {
+ regmap_update_bits(gpr, IOMUXC_GPR1,
+ IMX6SX_GPR1_FEC_CLOCK_MUX_SEL_MASK, 0);
+ regmap_update_bits(gpr, IOMUXC_GPR1,
+ IMX6SX_GPR1_FEC_CLOCK_PAD_DIR_MASK, 0);
+ } else {
+ pr_err("failed to find fsl,imx6sx-iomux-gpr regmap\n");
+ }
+}
+
+static inline void imx6sx_enet_init(void)
+{
+ imx6sx_enet_phy_init();
+ imx6sx_enet_clk_sel();
+}
+
static void __init imx6sx_init_machine(void)
{
struct device *parent;
@@ -24,6 +74,7 @@ static void __init imx6sx_init_machine(void)
of_platform_populate(NULL, of_default_bus_match_table, NULL, parent);
+ imx6sx_enet_init();
imx_anatop_init();
imx6sx_pm_init();
}
diff --git a/arch/arm/mach-imx/mach-ls1021a.c b/arch/arm/mach-imx/mach-ls1021a.c
new file mode 100644
index 000000000000..b89c858ebfd6
--- /dev/null
+++ b/arch/arm/mach-imx/mach-ls1021a.c
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2013-2014 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <asm/mach/arch.h>
+
+#include "common.h"
+
+static const char * const ls1021a_dt_compat[] __initconst = {
+ "fsl,ls1021a",
+ NULL,
+};
+
+DT_MACHINE_START(LS1021A, "Freescale LS1021A")
+ .smp = smp_ops(ls1021a_smp_ops),
+ .dt_compat = ls1021a_dt_compat,
+MACHINE_END
diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c
index 7a9686ad994c..3729d90cfa46 100644
--- a/arch/arm/mach-imx/mmdc.c
+++ b/arch/arm/mach-imx/mmdc.c
@@ -21,6 +21,12 @@
#define BP_MMDC_MAPSR_PSD 0
#define BP_MMDC_MAPSR_PSS 4
+#define MMDC_MDMISC 0x18
+#define BM_MMDC_MDMISC_DDR_TYPE 0x18
+#define BP_MMDC_MDMISC_DDR_TYPE 0x3
+
+static int ddr_type;
+
static int imx_mmdc_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -31,6 +37,12 @@ static int imx_mmdc_probe(struct platform_device *pdev)
mmdc_base = of_iomap(np, 0);
WARN_ON(!mmdc_base);
+ reg = mmdc_base + MMDC_MDMISC;
+ /* Get ddr type */
+ val = readl_relaxed(reg);
+ ddr_type = (val & BM_MMDC_MDMISC_DDR_TYPE) >>
+ BP_MMDC_MDMISC_DDR_TYPE;
+
reg = mmdc_base + MMDC_MAPSR;
/* Enable automatic power saving */
@@ -51,6 +63,11 @@ static int imx_mmdc_probe(struct platform_device *pdev)
return 0;
}
+int imx_mmdc_get_ddr_type(void)
+{
+ return ddr_type;
+}
+
static struct of_device_id imx_mmdc_dt_ids[] = {
{ .compatible = "fsl,imx6q-mmdc", },
{ /* sentinel */ }
diff --git a/arch/arm/mach-imx/mxc.h b/arch/arm/mach-imx/mxc.h
index 17a41ca65acf..4c1343df2ba4 100644
--- a/arch/arm/mach-imx/mxc.h
+++ b/arch/arm/mach-imx/mxc.h
@@ -55,6 +55,8 @@
#define IMX_CHIP_REVISION_3_3 0x33
#define IMX_CHIP_REVISION_UNKNOWN 0xff
+#define IMX_DDR_TYPE_LPDDR2 1
+
#ifndef __ASSEMBLY__
extern unsigned int __mxc_cpu_type;
#endif
diff --git a/arch/arm/mach-imx/platsmp.c b/arch/arm/mach-imx/platsmp.c
index 771bd25c1025..7f270015fe58 100644
--- a/arch/arm/mach-imx/platsmp.c
+++ b/arch/arm/mach-imx/platsmp.c
@@ -11,7 +11,10 @@
*/
#include <linux/init.h>
+#include <linux/of_address.h>
+#include <linux/of.h>
#include <linux/smp.h>
+
#include <asm/cacheflush.h>
#include <asm/page.h>
#include <asm/smp_scu.h>
@@ -94,3 +97,33 @@ struct smp_operations imx_smp_ops __initdata = {
.cpu_kill = imx_cpu_kill,
#endif
};
+
+#define DCFG_CCSR_SCRATCHRW1 0x200
+
+static int ls1021a_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+ arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+
+ return 0;
+}
+
+static void __init ls1021a_smp_prepare_cpus(unsigned int max_cpus)
+{
+ struct device_node *np;
+ void __iomem *dcfg_base;
+ unsigned long paddr;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,ls1021a-dcfg");
+ dcfg_base = of_iomap(np, 0);
+ BUG_ON(!dcfg_base);
+
+ paddr = virt_to_phys(secondary_startup);
+ writel_relaxed(cpu_to_be32(paddr), dcfg_base + DCFG_CCSR_SCRATCHRW1);
+
+ iounmap(dcfg_base);
+}
+
+struct smp_operations ls1021a_smp_ops __initdata = {
+ .smp_prepare_cpus = ls1021a_smp_prepare_cpus,
+ .smp_boot_secondary = ls1021a_boot_secondary,
+};
diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c
index d815d1ba27a5..5d2c1bd5f5ef 100644
--- a/arch/arm/mach-imx/pm-imx6.c
+++ b/arch/arm/mach-imx/pm-imx6.c
@@ -88,7 +88,7 @@ struct imx6_pm_base {
};
struct imx6_pm_socdata {
- u32 cpu_type;
+ u32 ddr_type;
const char *mmdc_compat;
const char *src_compat;
const char *iomuxc_compat;
@@ -138,7 +138,6 @@ static const u32 imx6sx_mmdc_io_offset[] __initconst = {
};
static const struct imx6_pm_socdata imx6q_pm_data __initconst = {
- .cpu_type = MXC_CPU_IMX6Q,
.mmdc_compat = "fsl,imx6q-mmdc",
.src_compat = "fsl,imx6q-src",
.iomuxc_compat = "fsl,imx6q-iomuxc",
@@ -148,7 +147,6 @@ static const struct imx6_pm_socdata imx6q_pm_data __initconst = {
};
static const struct imx6_pm_socdata imx6dl_pm_data __initconst = {
- .cpu_type = MXC_CPU_IMX6DL,
.mmdc_compat = "fsl,imx6q-mmdc",
.src_compat = "fsl,imx6q-src",
.iomuxc_compat = "fsl,imx6dl-iomuxc",
@@ -158,7 +156,6 @@ static const struct imx6_pm_socdata imx6dl_pm_data __initconst = {
};
static const struct imx6_pm_socdata imx6sl_pm_data __initconst = {
- .cpu_type = MXC_CPU_IMX6SL,
.mmdc_compat = "fsl,imx6sl-mmdc",
.src_compat = "fsl,imx6sl-src",
.iomuxc_compat = "fsl,imx6sl-iomuxc",
@@ -168,7 +165,6 @@ static const struct imx6_pm_socdata imx6sl_pm_data __initconst = {
};
static const struct imx6_pm_socdata imx6sx_pm_data __initconst = {
- .cpu_type = MXC_CPU_IMX6SX,
.mmdc_compat = "fsl,imx6sx-mmdc",
.src_compat = "fsl,imx6sx-src",
.iomuxc_compat = "fsl,imx6sx-iomuxc",
@@ -187,7 +183,7 @@ static const struct imx6_pm_socdata imx6sx_pm_data __initconst = {
struct imx6_cpu_pm_info {
phys_addr_t pbase; /* The physical address of pm_info. */
phys_addr_t resume_addr; /* The physical resume address for asm code */
- u32 cpu_type;
+ u32 ddr_type;
u32 pm_info_size; /* Size of pm_info. */
struct imx6_pm_base mmdc_base;
struct imx6_pm_base src_base;
@@ -521,7 +517,7 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
goto pl310_cache_map_failed;
}
- pm_info->cpu_type = socdata->cpu_type;
+ pm_info->ddr_type = imx_mmdc_get_ddr_type();
pm_info->mmdc_io_num = socdata->mmdc_io_num;
mmdc_offset_array = socdata->mmdc_io_offset;
diff --git a/arch/arm/mach-imx/suspend-imx6.S b/arch/arm/mach-imx/suspend-imx6.S
index ca4ea2daf25b..b99987b023fa 100644
--- a/arch/arm/mach-imx/suspend-imx6.S
+++ b/arch/arm/mach-imx/suspend-imx6.S
@@ -45,7 +45,7 @@
*/
#define PM_INFO_PBASE_OFFSET 0x0
#define PM_INFO_RESUME_ADDR_OFFSET 0x4
-#define PM_INFO_CPU_TYPE_OFFSET 0x8
+#define PM_INFO_DDR_TYPE_OFFSET 0x8
#define PM_INFO_PM_INFO_SIZE_OFFSET 0xC
#define PM_INFO_MX6Q_MMDC_P_OFFSET 0x10
#define PM_INFO_MX6Q_MMDC_V_OFFSET 0x14
@@ -110,7 +110,7 @@
ldreq r11, [r0, #PM_INFO_MX6Q_MMDC_V_OFFSET]
ldrne r11, [r0, #PM_INFO_MX6Q_MMDC_P_OFFSET]
- cmp r3, #MXC_CPU_IMX6SL
+ cmp r3, #IMX_DDR_TYPE_LPDDR2
bne 4f
/* reset read FIFO, RST_RD_FIFO */
@@ -151,7 +151,7 @@
ENTRY(imx6_suspend)
ldr r1, [r0, #PM_INFO_PBASE_OFFSET]
ldr r2, [r0, #PM_INFO_RESUME_ADDR_OFFSET]
- ldr r3, [r0, #PM_INFO_CPU_TYPE_OFFSET]
+ ldr r3, [r0, #PM_INFO_DDR_TYPE_OFFSET]
ldr r4, [r0, #PM_INFO_PM_INFO_SIZE_OFFSET]
/*
@@ -209,8 +209,8 @@ poll_dvfs_set:
ldr r7, [r0, #PM_INFO_MMDC_IO_NUM_OFFSET]
ldr r8, =PM_INFO_MMDC_IO_VAL_OFFSET
add r8, r8, r0
- /* i.MX6SL's last 3 IOs need special setting */
- cmp r3, #MXC_CPU_IMX6SL
+ /* LPDDR2's last 3 IOs need special setting */
+ cmp r3, #IMX_DDR_TYPE_LPDDR2
subeq r7, r7, #0x3
set_mmdc_io_lpm:
ldr r9, [r8], #0x8
@@ -218,7 +218,7 @@ set_mmdc_io_lpm:
subs r7, r7, #0x1
bne set_mmdc_io_lpm
- cmp r3, #MXC_CPU_IMX6SL
+ cmp r3, #IMX_DDR_TYPE_LPDDR2
bne set_mmdc_io_lpm_done
ldr r6, =0x1000
ldr r9, [r8], #0x8
@@ -324,7 +324,7 @@ resume:
str r7, [r11, #MX6Q_SRC_GPR1]
str r7, [r11, #MX6Q_SRC_GPR2]
- ldr r3, [r0, #PM_INFO_CPU_TYPE_OFFSET]
+ ldr r3, [r0, #PM_INFO_DDR_TYPE_OFFSET]
mov r5, #0x1
resume_mmdc
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-19 23:37:43 +0000