[PATCH 3/5] phy: rockchip-snps-pcie3: Increase sram init timeout

[Shawn Lin]

Per massive test, 500us is not enough for all chips, increase it
to 20000us for worse case recommended.

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

 drivers/phy/rockchip/phy-rockchip-snps-pcie3.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c b/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c
index 9933cda..f5a5d0af 100644
--- a/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c
+++ b/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c
@@ -19,6 +19,9 @@
 #include <linux/regmap.h>
 #include <linux/reset.h>
 
+/* Common definition */
+#define RK_SRAM_INIT_TIMEOUT_US			20000
+
 /* Register for RK3568 */
 #define GRF_PCIE30PHY_CON1			0x4
 #define GRF_PCIE30PHY_CON6			0x18
@@ -28,6 +31,7 @@
 #define GRF_PCIE30PHY_WR_EN			(0xf << 16)
 #define SRAM_INIT_DONE(reg)			(reg & BIT(14))
 
+
 #define RK3568_BIFURCATION_LANE_0_1		BIT(0)
 
 /* Register for RK3588 */
@@ -134,7 +138,7 @@ static int rockchip_p3phy_rk3568_calibrate(struct rockchip_p3phy_priv *priv)
 	ret = regmap_read_poll_timeout(priv->phy_grf,
 				       GRF_PCIE30PHY_STATUS0,
 				       reg, SRAM_INIT_DONE(reg),
-				       0, 500);
+				       0, RK_SRAM_INIT_TIMEOUT_US);
 	if (ret)
 		dev_err(&priv->phy->dev, "lock failed 0x%x, check input refclk and power supply\n",
 			reg);
@@ -203,11 +207,11 @@ static int rockchip_p3phy_rk3588_calibrate(struct rockchip_p3phy_priv *priv)
 	ret = regmap_read_poll_timeout(priv->phy_grf,
 				       RK3588_PCIE3PHY_GRF_PHY0_STATUS1,
 				       reg, RK3588_SRAM_INIT_DONE(reg),
-				       0, 500);
+				       0, RK_SRAM_INIT_TIMEOUT_US);
 	ret |= regmap_read_poll_timeout(priv->phy_grf,
 					RK3588_PCIE3PHY_GRF_PHY1_STATUS1,
 					reg, RK3588_SRAM_INIT_DONE(reg),
-					0, 500);
+					0, RK_SRAM_INIT_TIMEOUT_US);
 	if (ret)
 		dev_err(&priv->phy->dev, "lock failed 0x%x, check input refclk and power supply\n",
 			reg);
-- 
2.7.4