diff --git a/drivers/gpu/drm/rockchip/rk618/rk618_lvds.c b/drivers/gpu/drm/rockchip/rk618/rk618_lvds.c
index a0ceeb618328..83ee5f093ac0 100644
--- a/drivers/gpu/drm/rockchip/rk618/rk618_lvds.c
+++ b/drivers/gpu/drm/rockchip/rk618/rk618_lvds.c
@@ -241,6 +241,7 @@ static int rk618_lvds_probe(struct platform_device *pdev)
 
 	lvds->dev = dev;
 	lvds->parent = rk618;
+	lvds->regmap = rk618->regmap;
 	platform_set_drvdata(pdev, lvds);
 
 	ret = rk618_lvds_parse_dt(lvds);
@@ -249,10 +250,6 @@ static int rk618_lvds_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	lvds->regmap = dev_get_regmap(dev->parent, NULL);
-	if (!lvds->regmap)
-		return -ENODEV;
-
 	endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 1, -1);
 	if (endpoint) {
 		struct device_node *remote;
diff --git a/drivers/gpu/drm/rockchip/rk618/rk618_rgb.c b/drivers/gpu/drm/rockchip/rk618/rk618_rgb.c
index a0187935008f..00b94f2ac93b 100644
--- a/drivers/gpu/drm/rockchip/rk618/rk618_rgb.c
+++ b/drivers/gpu/drm/rockchip/rk618/rk618_rgb.c
@@ -227,12 +227,9 @@ static int rk618_rgb_probe(struct platform_device *pdev)
 
 	rgb->dev = dev;
 	rgb->parent = rk618;
+	rgb->regmap = rk618->regmap;
 	platform_set_drvdata(pdev, rgb);
 
-	rgb->regmap = dev_get_regmap(dev->parent, NULL);
-	if (!rgb->regmap)
-		return -ENODEV;
-
 	rgb->clock = devm_clk_get(dev, "rgb");
 	if (IS_ERR(rgb->clock)) {
 		ret = PTR_ERR(rgb->clock);
diff --git a/drivers/gpu/drm/rockchip/rk618/rk618_scaler.c b/drivers/gpu/drm/rockchip/rk618/rk618_scaler.c
index c59da7bc4872..d2c9c1cb2fb8 100644
--- a/drivers/gpu/drm/rockchip/rk618/rk618_scaler.c
+++ b/drivers/gpu/drm/rockchip/rk618/rk618_scaler.c
@@ -350,6 +350,7 @@ static const struct drm_bridge_funcs rk618_scaler_bridge_funcs = {
 
 static int rk618_scaler_probe(struct platform_device *pdev)
 {
+	struct rk618 *rk618 = dev_get_drvdata(pdev->dev.parent);
 	struct device *dev = &pdev->dev;
 	struct rk618_scaler *scl;
 	int ret;
@@ -362,12 +363,9 @@ static int rk618_scaler_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	scl->dev = dev;
+	scl->regmap = rk618->regmap;
 	platform_set_drvdata(pdev, scl);
 
-	scl->regmap = dev_get_regmap(dev->parent, NULL);
-	if (!scl->regmap)
-		return -ENODEV;
-
 	scl->vif_clk = devm_clk_get(dev, "vif");
 	if (IS_ERR(scl->vif_clk)) {
 		ret = PTR_ERR(scl->vif_clk);
diff --git a/drivers/gpu/drm/rockchip/rk618/rk618_vif.c b/drivers/gpu/drm/rockchip/rk618/rk618_vif.c
index a6f2203ed806..ca13750536fc 100644
--- a/drivers/gpu/drm/rockchip/rk618/rk618_vif.c
+++ b/drivers/gpu/drm/rockchip/rk618/rk618_vif.c
@@ -193,6 +193,7 @@ static const struct drm_bridge_funcs rk618_vif_bridge_funcs = {
 
 static int rk618_vif_probe(struct platform_device *pdev)
 {
+	struct rk618 *rk618 = dev_get_drvdata(pdev->dev.parent);
 	struct device *dev = &pdev->dev;
 	struct rk618_vif *vif;
 	int ret;
@@ -205,12 +206,9 @@ static int rk618_vif_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	vif->dev = dev;
+	vif->regmap = rk618->regmap;
 	platform_set_drvdata(pdev, vif);
 
-	vif->regmap = dev_get_regmap(dev->parent, NULL);
-	if (!vif->regmap)
-		return -ENODEV;
-
 	vif->vif_clk = devm_clk_get(dev, "vif");
 	if (IS_ERR(vif->vif_clk)) {
 		ret = PTR_ERR(vif->vif_clk);