[PATCH 2/3] PCI: rockchip: move the deassert of pm/aclk/pclk after phy_init

Shawn Lin shawn.lin at rock-chips.com
Tue Nov 22 17:19:12 PST 2016


Move them after phy_init as we want to optimize the logic
of reset control and reuse rockchip_pcie_init_port later
which should fully follow the cold boot procedure of ROM
code.

Signed-off-by: Shawn Lin <shawn.lin at rock-chips.com>
---

 drivers/pci/host/pcie-rockchip.c | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index 19399fc..71d056d 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -476,26 +476,6 @@ static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip)
 		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);
@@ -526,6 +506,26 @@ static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip)
 		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 aclk_rst err %d\n", err);
+		return err;
+	}
+
+	err = reset_control_deassert(rockchip->pclk_rst);
+	if (err) {
+		dev_err(dev, "deassert pclk_rst err %d\n", err);
+		return err;
+	}
+
 	if (rockchip->link_gen == 2)
 		rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_2,
 				    PCIE_CLIENT_CONFIG);
-- 
1.9.1





More information about the Linux-rockchip mailing list