1 files changed, 62 insertions, 0 deletions

diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index e0b22dab9b7a..e04f69beb42d 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -190,6 +190,9 @@ struct rockchip_pcie {
         struct  reset_control *mgmt_rst;
         struct  reset_control *mgmt_sticky_rst;
         struct  reset_control *pipe_rst;
+        struct  reset_control *pm_rst;
+        struct  reset_control *aclk_rst;
+        struct  reset_control *pclk_rst;
         struct  clk *aclk_pcie;
         struct  clk *aclk_perf_pcie;
         struct  clk *hclk_pcie;
@@ -408,6 +411,44 @@ static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip)
 
         gpiod_set_value(rockchip->ep_gpio, 0);
 
+        err = reset_control_assert(rockchip->aclk_rst);
+        if (err) {
+                dev_err(dev, "assert aclk_rst err %d\n", err);
+                return err;
+        }
+
+        err = reset_control_assert(rockchip->pclk_rst);
+        if (err) {
+                dev_err(dev, "assert pclk_rst err %d\n", err);
+                return err;
+        }
+
+        err = reset_control_assert(rockchip->pm_rst);
+        if (err) {
+                dev_err(dev, "assert pm_rst err %d\n", err);
+                return err;
+        }
+
+        udelay(10);
+
+        err = reset_control_deassert(rockchip->pm_rst);
+        if (err) {
+                dev_err(dev, "deassert pm_rst err %d\n", err);
+                return err;
+        }
+
+        err = reset_control_deassert(rockchip->aclk_rst);
+        if (err) {
+                dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err);
+                return err;
+        }
+
+        err = reset_control_deassert(rockchip->pclk_rst);
+        if (err) {
+                dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err);
+                return err;
+        }
+
         err = phy_init(rockchip->phy);
         if (err < 0) {
                 dev_err(dev, "fail to init phy, err %d\n", err);
@@ -781,6 +822,27 @@ static int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip)
                 return PTR_ERR(rockchip->pipe_rst);
         }
 
+        rockchip->pm_rst = devm_reset_control_get(dev, "pm");
+        if (IS_ERR(rockchip->pm_rst)) {
+                if (PTR_ERR(rockchip->pm_rst) != -EPROBE_DEFER)
+                        dev_err(dev, "missing pm reset property in node\n");
+                return PTR_ERR(rockchip->pm_rst);
+        }
+
+        rockchip->pclk_rst = devm_reset_control_get(dev, "pclk");
+        if (IS_ERR(rockchip->pclk_rst)) {
+                if (PTR_ERR(rockchip->pclk_rst) != -EPROBE_DEFER)
+                        dev_err(dev, "missing pclk reset property in node\n");
+                return PTR_ERR(rockchip->pclk_rst);
+        }
+
+        rockchip->aclk_rst = devm_reset_control_get(dev, "aclk");
+        if (IS_ERR(rockchip->aclk_rst)) {
+                if (PTR_ERR(rockchip->aclk_rst) != -EPROBE_DEFER)
+                        dev_err(dev, "missing aclk reset property in node\n");
+                return PTR_ERR(rockchip->aclk_rst);
+        }
+
         rockchip->ep_gpio = devm_gpiod_get(dev, "ep", GPIOD_OUT_HIGH);
         if (IS_ERR(rockchip->ep_gpio)) {
                 dev_err(dev, "missing ep-gpios property in node\n");