diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 87c43d6169d9..d3518e08e17b 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -912,6 +912,7 @@ static const struct dw_hdmi_plat_data rk3228_hdmi_drv_data = {
 	.phy_ops    = &rk3228_hdmi_phy_ops,
 	.phy_name   = "inno_dw_hdmi_phy",
 	.phy_force_vendor = true,
+	.ycbcr_420_allowed = true,
 };
 
 static struct rockchip_hdmi_chip_data rk3288_chip_data = {
@@ -927,6 +928,7 @@ static const struct dw_hdmi_plat_data rk3288_hdmi_drv_data = {
 	.phy_config = rockchip_phy_config,
 	.phy_data = &rk3288_chip_data,
 	.tmds_n_table = rockchip_werid_tmds_n_table,
+	.ycbcr_420_allowed = true,
 };
 
 static const struct dw_hdmi_phy_ops rk3328_hdmi_phy_ops = {
@@ -950,6 +952,7 @@ static const struct dw_hdmi_plat_data rk3328_hdmi_drv_data = {
 	.phy_ops = &rk3328_hdmi_phy_ops,
 	.phy_name = "inno_dw_hdmi_phy2",
 	.phy_force_vendor = true,
+	.ycbcr_420_allowed = true,
 };
 
 static struct rockchip_hdmi_chip_data rk3368_chip_data = {
@@ -963,6 +966,7 @@ static const struct dw_hdmi_plat_data rk3368_hdmi_drv_data = {
 	.cur_ctr    = rockchip_cur_ctr,
 	.phy_config = rockchip_phy_config,
 	.phy_data = &rk3368_chip_data,
+	.ycbcr_420_allowed = true,
 };
 
 static struct rockchip_hdmi_chip_data rk3399_chip_data = {
@@ -978,6 +982,7 @@ static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
 	.cur_ctr    = rockchip_cur_ctr,
 	.phy_config = rockchip_phy_config,
 	.phy_data = &rk3399_chip_data,
+	.ycbcr_420_allowed = true,
 };
 
 static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = {