2 files changed, 76 insertions, 0 deletions

diff --git a/drivers/clk/baikal-t1/ccu-rst.c b/drivers/clk/baikal-t1/ccu-rst.c
index 7db52633270f..40023ea67463 100644
--- a/drivers/clk/baikal-t1/ccu-rst.c
+++ b/drivers/clk/baikal-t1/ccu-rst.c
@@ -35,18 +35,29 @@
 #define CCU_AXI_HWA_BASE		0x054
 #define CCU_AXI_SRAM_BASE		0x058
 
+#define CCU_SYS_DDR_BASE		0x02c
 #define CCU_SYS_SATA_REF_BASE		0x060
 #define CCU_SYS_APB_BASE		0x064
+#define CCU_SYS_PCIE_BASE		0x144
 
 #define CCU_RST_DELAY_US		1
 
 #define CCU_RST_TRIG(_base, _ofs)		\
 	{					\
+		.type = CCU_RST_TRIG,		\
+		.base = _base,			\
+		.mask = BIT(_ofs),		\
+	}
+
+#define CCU_RST_DIR(_base, _ofs)		\
+	{					\
+		.type = CCU_RST_DIR,		\
 		.base = _base,			\
 		.mask = BIT(_ofs),		\
 	}
 
 struct ccu_rst_info {
+	enum ccu_rst_type type;
 	unsigned int base;
 	unsigned int mask;
 };
@@ -79,6 +90,15 @@ static const struct ccu_rst_info axi_rst_info[] = {
 static const struct ccu_rst_info sys_rst_info[] = {
 	[CCU_SYS_SATA_REF_RST] = CCU_RST_TRIG(CCU_SYS_SATA_REF_BASE, 1),
 	[CCU_SYS_APB_RST] = CCU_RST_TRIG(CCU_SYS_APB_BASE, 1),
+	[CCU_SYS_DDR_FULL_RST] = CCU_RST_DIR(CCU_SYS_DDR_BASE, 1),
+	[CCU_SYS_DDR_INIT_RST] = CCU_RST_DIR(CCU_SYS_DDR_BASE, 2),
+	[CCU_SYS_PCIE_PCS_PHY_RST] = CCU_RST_DIR(CCU_SYS_PCIE_BASE, 0),
+	[CCU_SYS_PCIE_PIPE0_RST] = CCU_RST_DIR(CCU_SYS_PCIE_BASE, 4),
+	[CCU_SYS_PCIE_CORE_RST] = CCU_RST_DIR(CCU_SYS_PCIE_BASE, 8),
+	[CCU_SYS_PCIE_PWR_RST] = CCU_RST_DIR(CCU_SYS_PCIE_BASE, 9),
+	[CCU_SYS_PCIE_STICKY_RST] = CCU_RST_DIR(CCU_SYS_PCIE_BASE, 10),
+	[CCU_SYS_PCIE_NSTICKY_RST] = CCU_RST_DIR(CCU_SYS_PCIE_BASE, 11),
+	[CCU_SYS_PCIE_HOT_RST] = CCU_RST_DIR(CCU_SYS_PCIE_BASE, 12),
 };
 
 static int ccu_rst_reset(struct reset_controller_dev *rcdev, unsigned long idx)
@@ -86,6 +106,9 @@ static int ccu_rst_reset(struct reset_controller_dev *rcdev, unsigned long idx)
 	struct ccu_rst *rst = to_ccu_rst(rcdev);
 	const struct ccu_rst_info *info = &rst->rsts_info[idx];
 
+	if (info->type != CCU_RST_TRIG)
+		return -EOPNOTSUPP;
+
 	regmap_update_bits(rst->sys_regs, info->base, info->mask, info->mask);
 
 	/* The next delay must be enough to cover all the resets. */
@@ -94,8 +117,51 @@ static int ccu_rst_reset(struct reset_controller_dev *rcdev, unsigned long idx)
 	return 0;
 }
 
+static int ccu_rst_set(struct reset_controller_dev *rcdev,
+		       unsigned long idx, bool high)
+{
+	struct ccu_rst *rst = to_ccu_rst(rcdev);
+	const struct ccu_rst_info *info = &rst->rsts_info[idx];
+
+	if (info->type != CCU_RST_DIR)
+		return high ? -EOPNOTSUPP : 0;
+
+	return regmap_update_bits(rst->sys_regs, info->base,
+				  info->mask, high ? info->mask : 0);
+}
+
+static int ccu_rst_assert(struct reset_controller_dev *rcdev,
+			  unsigned long idx)
+{
+	return ccu_rst_set(rcdev, idx, true);
+}
+
+static int ccu_rst_deassert(struct reset_controller_dev *rcdev,
+			    unsigned long idx)
+{
+	return ccu_rst_set(rcdev, idx, false);
+}
+
+static int ccu_rst_status(struct reset_controller_dev *rcdev,
+			  unsigned long idx)
+{
+	struct ccu_rst *rst = to_ccu_rst(rcdev);
+	const struct ccu_rst_info *info = &rst->rsts_info[idx];
+	u32 val;
+
+	if (info->type != CCU_RST_DIR)
+		return -EOPNOTSUPP;
+
+	regmap_read(rst->sys_regs, info->base, &val);
+
+	return !!(val & info->mask);
+}
+
 static const struct reset_control_ops ccu_rst_ops = {
 	.reset = ccu_rst_reset,
+	.assert = ccu_rst_assert,
+	.deassert = ccu_rst_deassert,
+	.status = ccu_rst_status,
 };
 
 struct ccu_rst *ccu_rst_hw_register(const struct ccu_rst_init_data *rst_init)
diff --git a/drivers/clk/baikal-t1/ccu-rst.h b/drivers/clk/baikal-t1/ccu-rst.h
index 68214d777465..d6e8b2f671f4 100644
--- a/drivers/clk/baikal-t1/ccu-rst.h
+++ b/drivers/clk/baikal-t1/ccu-rst.h
@@ -14,6 +14,16 @@
 struct ccu_rst_info;
 
 /*
+ * enum ccu_rst_type - CCU Reset types
+ * @CCU_RST_TRIG: Self-deasserted reset signal.
+ * @CCU_RST_DIR: Directly controlled reset signal.
+ */
+enum ccu_rst_type {
+	CCU_RST_TRIG,
+	CCU_RST_DIR,
+};
+
+/*
  * struct ccu_rst_init_data - CCU Resets initialization data
  * @sys_regs: Baikal-T1 System Controller registers map.
  * @np: Pointer to the node with the System CCU block.