phy: rockchip-snps-pcie3: only look for rockchip,pipe-grf on rk3588

The rockchip,pipe-grf property is only used on rk3588, but not on
rk3568. Therefore this property is not present on rk3568 devices,
leading to the following message:

  rockchip-snps-pcie3-phy fe8c0000.phy: failed to find rockchip,pipe_grf regmap

Fix that by only looking for this property on rk3588.

Fixes: 2e9bffc4f713d ("phy: rockchip: Support PCIe v3")
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Link: https://lore.kernel.org/r/20220927051752.53089-1-aurelien@aurel32.net
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c b/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c
index a8d5914..1d355b3 100644 (file)
--- a/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c
+++ b/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c
@@ -255,10 +255,15 @@ static int rockchip_p3phy_probe(struct platform_device *pdev)
                return PTR_ERR(priv->phy_grf);
        }
 
-       priv->pipe_grf = syscon_regmap_lookup_by_phandle(dev->of_node,
-                                                        "rockchip,pipe-grf");
-       if (IS_ERR(priv->pipe_grf))
-               dev_info(dev, "failed to find rockchip,pipe_grf regmap\n");
+       if (of_device_is_compatible(np, "rockchip,rk3588-pcie3-phy")) {
+               priv->pipe_grf =
+                       syscon_regmap_lookup_by_phandle(dev->of_node,
+                                                       "rockchip,pipe-grf");
+               if (IS_ERR(priv->pipe_grf))
+                       dev_info(dev, "failed to find rockchip,pipe_grf regmap\n");
+       } else {
+               priv->pipe_grf = NULL;
+       }
 
        priv->num_lanes = of_property_read_variable_u32_array(dev->of_node, "data-lanes",
                                                             priv->lanes, 2,