Merge branch 'net-stmmac-dwmac-rk-validate-grf-and-peripheral-grf-during-probe'

Jonas Karlman says:

====================
net: stmmac: dwmac-rk: Validate GRF and peripheral GRF during probe

All Rockchip GMAC variants typically write to GRF regs to control e.g.
interface mode, speed and MAC rx/tx delay. Newer SoCs such as RK3576 and
RK3588 use a mix of GRF and peripheral GRF regs. These syscon regmaps is
located with help of a rockchip,grf and rockchip,php-grf phandle.

However, validating the rockchip,grf and rockchip,php-grf syscon regmap
is deferred until e.g. interface mode or speed is configured.

This series change to validate the GRF and peripheral GRF syscon regmap
at probe time to help simplify the SoC specific operations.

This should not introduce any backward compatibility issues as all
GMAC nodes have been added together with a rockchip,grf phandle (and
rockchip,php-grf where required) in their initial commit.
====================

Link: https://patch.msgid.link/20250308213720.2517944-1-jonas@kwiboo.se
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

2 files changed, 37 insertions, 254 deletions

diff --git a/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml b/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml
index f8a576611d6c..8dd870f0214d 100644
--- a/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/rockchip-dwmac.yaml
@@ -32,9 +32,6 @@ select:
   required:
     - compatible
 
-allOf:
-  - $ref: snps,dwmac.yaml#
-
 properties:
   compatible:
     oneOf:
@@ -114,6 +111,24 @@ required:
   - compatible
   - clocks
   - clock-names
+  - rockchip,grf
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - rockchip,rk3576-gmac
+              - rockchip,rk3588-gmac
+    then:
+      required:
+        - rockchip,php-grf
+    else:
+      properties:
+        rockchip,php-grf: false
 
 unevaluatedProperties: false
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 003fa5cf42c3..342463587d06 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -33,6 +33,7 @@ struct rk_gmac_ops {
 	void (*set_clock_selection)(struct rk_priv_data *bsp_priv, bool input,
 				    bool enable);
 	void (*integrated_phy_powerup)(struct rk_priv_data *bsp_priv);
+	bool php_grf_required;
 	bool regs_valid;
 	u32 regs[];
 };
@@ -101,13 +102,6 @@ struct rk_priv_data {
 
 static void px30_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, PX30_GRF_GMAC_CON1,
 		     PX30_GMAC_PHY_INTF_SEL_RMII);
 }
@@ -181,13 +175,6 @@ static const struct rk_gmac_ops px30_ops = {
 static void rk3128_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3128_GRF_MAC_CON1,
 		     RK3128_GMAC_PHY_INTF_SEL_RGMII |
 		     RK3128_GMAC_RMII_MODE_CLR);
@@ -199,13 +186,6 @@ static void rk3128_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3128_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3128_GRF_MAC_CON1,
 		     RK3128_GMAC_PHY_INTF_SEL_RMII | RK3128_GMAC_RMII_MODE);
 }
@@ -214,11 +194,6 @@ static void rk3128_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	if (speed == 10)
 		regmap_write(bsp_priv->grf, RK3128_GRF_MAC_CON1,
 			     RK3128_GMAC_CLK_2_5M);
@@ -236,11 +211,6 @@ static void rk3128_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	if (speed == 10) {
 		regmap_write(bsp_priv->grf, RK3128_GRF_MAC_CON1,
 			     RK3128_GMAC_RMII_CLK_2_5M |
@@ -297,13 +267,6 @@ static const struct rk_gmac_ops rk3128_ops = {
 static void rk3228_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
 		     RK3228_GMAC_PHY_INTF_SEL_RGMII |
 		     RK3228_GMAC_RMII_MODE_CLR |
@@ -316,13 +279,6 @@ static void rk3228_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3228_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
 		     RK3228_GMAC_PHY_INTF_SEL_RMII |
 		     RK3228_GMAC_RMII_MODE);
@@ -335,11 +291,6 @@ static void rk3228_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	if (speed == 10)
 		regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
 			     RK3228_GMAC_CLK_2_5M);
@@ -357,11 +308,6 @@ static void rk3228_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	if (speed == 10)
 		regmap_write(bsp_priv->grf, RK3228_GRF_MAC_CON1,
 			     RK3228_GMAC_RMII_CLK_2_5M |
@@ -419,13 +365,6 @@ static const struct rk_gmac_ops rk3228_ops = {
 static void rk3288_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
 		     RK3288_GMAC_PHY_INTF_SEL_RGMII |
 		     RK3288_GMAC_RMII_MODE_CLR);
@@ -437,13 +376,6 @@ static void rk3288_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3288_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
 		     RK3288_GMAC_PHY_INTF_SEL_RMII | RK3288_GMAC_RMII_MODE);
 }
@@ -452,11 +384,6 @@ static void rk3288_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	if (speed == 10)
 		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
 			     RK3288_GMAC_CLK_2_5M);
@@ -474,11 +401,6 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	if (speed == 10) {
 		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
 			     RK3288_GMAC_RMII_CLK_2_5M |
@@ -511,13 +433,6 @@ static const struct rk_gmac_ops rk3288_ops = {
 
 static void rk3308_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3308_GRF_MAC_CON0,
 		     RK3308_GMAC_PHY_INTF_SEL_RMII);
 }
@@ -526,11 +441,6 @@ static void rk3308_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	if (speed == 10) {
 		regmap_write(bsp_priv->grf, RK3308_GRF_MAC_CON0,
 			     RK3308_GMAC_SPEED_10M);
@@ -583,13 +493,6 @@ static const struct rk_gmac_ops rk3308_ops = {
 static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
 		     RK3328_GMAC_PHY_INTF_SEL_RGMII |
 		     RK3328_GMAC_RMII_MODE_CLR |
@@ -603,14 +506,8 @@ static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3328_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
 	unsigned int reg;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	reg = bsp_priv->integrated_phy ? RK3328_GRF_MAC_CON2 :
 		  RK3328_GRF_MAC_CON1;
 
@@ -623,11 +520,6 @@ static void rk3328_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	if (speed == 10)
 		regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
 			     RK3328_GMAC_CLK_2_5M);
@@ -646,11 +538,6 @@ static void rk3328_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 	struct device *dev = &bsp_priv->pdev->dev;
 	unsigned int reg;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	reg = bsp_priv->integrated_phy ? RK3328_GRF_MAC_CON2 :
 		  RK3328_GRF_MAC_CON1;
 
@@ -711,13 +598,6 @@ static const struct rk_gmac_ops rk3328_ops = {
 static void rk3366_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
 		     RK3366_GMAC_PHY_INTF_SEL_RGMII |
 		     RK3366_GMAC_RMII_MODE_CLR);
@@ -729,13 +609,6 @@ static void rk3366_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3366_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
 		     RK3366_GMAC_PHY_INTF_SEL_RMII | RK3366_GMAC_RMII_MODE);
 }
@@ -744,11 +617,6 @@ static void rk3366_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	if (speed == 10)
 		regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
 			     RK3366_GMAC_CLK_2_5M);
@@ -766,11 +634,6 @@ static void rk3366_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	if (speed == 10) {
 		regmap_write(bsp_priv->grf, RK3366_GRF_SOC_CON6,
 			     RK3366_GMAC_RMII_CLK_2_5M |
@@ -822,13 +685,6 @@ static const struct rk_gmac_ops rk3366_ops = {
 static void rk3368_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
 		     RK3368_GMAC_PHY_INTF_SEL_RGMII |
 		     RK3368_GMAC_RMII_MODE_CLR);
@@ -840,13 +696,6 @@ static void rk3368_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3368_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
 		     RK3368_GMAC_PHY_INTF_SEL_RMII | RK3368_GMAC_RMII_MODE);
 }
@@ -855,11 +704,6 @@ static void rk3368_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	if (speed == 10)
 		regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
 			     RK3368_GMAC_CLK_2_5M);
@@ -877,11 +721,6 @@ static void rk3368_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	if (speed == 10) {
 		regmap_write(bsp_priv->grf, RK3368_GRF_SOC_CON15,
 			     RK3368_GMAC_RMII_CLK_2_5M |
@@ -933,13 +772,6 @@ static const struct rk_gmac_ops rk3368_ops = {
 static void rk3399_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3399_GRF_SOC_CON5,
 		     RK3399_GMAC_PHY_INTF_SEL_RGMII |
 		     RK3399_GMAC_RMII_MODE_CLR);
@@ -951,13 +783,6 @@ static void rk3399_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3399_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RK3399_GRF_SOC_CON5,
 		     RK3399_GMAC_PHY_INTF_SEL_RMII | RK3399_GMAC_RMII_MODE);
 }
@@ -966,11 +791,6 @@ static void rk3399_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	if (speed == 10)
 		regmap_write(bsp_priv->grf, RK3399_GRF_SOC_CON5,
 			     RK3399_GMAC_CLK_2_5M);
@@ -988,11 +808,6 @@ static void rk3399_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	if (speed == 10) {
 		regmap_write(bsp_priv->grf, RK3399_GRF_SOC_CON5,
 			     RK3399_GMAC_RMII_CLK_2_5M |
@@ -1037,14 +852,8 @@ static const struct rk_gmac_ops rk3399_ops = {
 static void rk3568_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
 	u32 con0, con1;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	con0 = (bsp_priv->id == 1) ? RK3568_GRF_GMAC1_CON0 :
 				     RK3568_GRF_GMAC0_CON0;
 	con1 = (bsp_priv->id == 1) ? RK3568_GRF_GMAC1_CON1 :
@@ -1062,14 +871,8 @@ static void rk3568_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3568_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
 	u32 con1;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	con1 = (bsp_priv->id == 1) ? RK3568_GRF_GMAC1_CON1 :
 				     RK3568_GRF_GMAC0_CON1;
 	regmap_write(bsp_priv->grf, con1, RK3568_GMAC_PHY_INTF_SEL_RMII);
@@ -1147,14 +950,8 @@ static const struct rk_gmac_ops rk3568_ops = {
 static void rk3576_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
 	unsigned int offset_con;
 
-	if (IS_ERR(bsp_priv->grf) || IS_ERR(bsp_priv->php_grf)) {
-		dev_err(dev, "Missing rockchip,grf or rockchip,php-grf property\n");
-		return;
-	}
-
 	offset_con = bsp_priv->id == 1 ? RK3576_GRF_GMAC_CON1 :
 					 RK3576_GRF_GMAC_CON0;
 
@@ -1180,14 +977,8 @@ static void rk3576_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3576_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
 	unsigned int offset_con;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	offset_con = bsp_priv->id == 1 ? RK3576_GRF_GMAC_CON1 :
 					 RK3576_GRF_GMAC_CON0;
 
@@ -1254,6 +1045,7 @@ static const struct rk_gmac_ops rk3576_ops = {
 	.set_rgmii_speed = rk3576_set_gmac_speed,
 	.set_rmii_speed = rk3576_set_gmac_speed,
 	.set_clock_selection = rk3576_set_clock_selection,
+	.php_grf_required = true,
 	.regs_valid = true,
 	.regs = {
 		0x2a220000, /* gmac0 */
@@ -1306,14 +1098,8 @@ static const struct rk_gmac_ops rk3576_ops = {
 static void rk3588_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
 	u32 offset_con, id = bsp_priv->id;
 
-	if (IS_ERR(bsp_priv->grf) || IS_ERR(bsp_priv->php_grf)) {
-		dev_err(dev, "Missing rockchip,grf or rockchip,php_grf property\n");
-		return;
-	}
-
 	offset_con = bsp_priv->id == 1 ? RK3588_GRF_GMAC_CON9 :
 					 RK3588_GRF_GMAC_CON8;
 
@@ -1334,13 +1120,6 @@ static void rk3588_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rk3588_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->php_grf)) {
-		dev_err(dev, "%s: Missing rockchip,php_grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->php_grf, RK3588_GRF_GMAC_CON0,
 		     RK3588_GMAC_PHY_INTF_SEL_RMII(bsp_priv->id));
 
@@ -1401,6 +1180,7 @@ static const struct rk_gmac_ops rk3588_ops = {
 	.set_rgmii_speed = rk3588_set_gmac_speed,
 	.set_rmii_speed = rk3588_set_gmac_speed,
 	.set_clock_selection = rk3588_set_clock_selection,
+	.php_grf_required = true,
 	.regs_valid = true,
 	.regs = {
 		0xfe1b0000, /* gmac0 */
@@ -1423,13 +1203,6 @@ static const struct rk_gmac_ops rk3588_ops = {
 
 static void rv1108_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RV1108_GRF_GMAC_CON0,
 		     RV1108_GMAC_PHY_INTF_SEL_RMII);
 }
@@ -1438,11 +1211,6 @@ static void rv1108_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
 {
 	struct device *dev = &bsp_priv->pdev->dev;
 
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	if (speed == 10) {
 		regmap_write(bsp_priv->grf, RV1108_GRF_GMAC_CON0,
 			     RV1108_GMAC_RMII_CLK_2_5M |
@@ -1491,13 +1259,6 @@ static const struct rk_gmac_ops rv1108_ops = {
 static void rv1126_set_to_rgmii(struct rk_priv_data *bsp_priv,
 				int tx_delay, int rx_delay)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "Missing rockchip,grf property\n");
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RV1126_GRF_GMAC_CON0,
 		     RV1126_GMAC_PHY_INTF_SEL_RGMII |
 		     RV1126_GMAC_M0_RXCLK_DLY_ENABLE |
@@ -1516,13 +1277,6 @@ static void rv1126_set_to_rgmii(struct rk_priv_data *bsp_priv,
 
 static void rv1126_set_to_rmii(struct rk_priv_data *bsp_priv)
 {
-	struct device *dev = &bsp_priv->pdev->dev;
-
-	if (IS_ERR(bsp_priv->grf)) {
-		dev_err(dev, "%s: Missing rockchip,grf property\n", __func__);
-		return;
-	}
-
 	regmap_write(bsp_priv->grf, RV1126_GRF_GMAC_CON0,
 		     RV1126_GMAC_PHY_INTF_SEL_RMII);
 }
@@ -1812,8 +1566,22 @@ static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
 
 	bsp_priv->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
 							"rockchip,grf");
-	bsp_priv->php_grf = syscon_regmap_lookup_by_phandle(dev->of_node,
-							    "rockchip,php-grf");
+	if (IS_ERR(bsp_priv->grf)) {
+		dev_err_probe(dev, PTR_ERR(bsp_priv->grf),
+			      "failed to lookup rockchip,grf\n");
+		return ERR_CAST(bsp_priv->grf);
+	}
+
+	if (ops->php_grf_required) {
+		bsp_priv->php_grf =
+			syscon_regmap_lookup_by_phandle(dev->of_node,
+							"rockchip,php-grf");
+		if (IS_ERR(bsp_priv->php_grf)) {
+			dev_err_probe(dev, PTR_ERR(bsp_priv->php_grf),
+				      "failed to lookup rockchip,php-grf\n");
+			return ERR_CAST(bsp_priv->php_grf);
+		}
+	}
 
 	if (plat->phy_node) {
 		bsp_priv->integrated_phy = of_property_read_bool(plat->phy_node,