diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index e065c99aa291..257bd6caf5d6 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -115,6 +115,7 @@ struct rockchip_hdmi {
 
 	unsigned int colordepth;
 	unsigned int hdmi_quant_range;
+	unsigned int phy_bus_width;
 	enum drm_hdmi_output_type hdmi_output;
 };
 
@@ -411,6 +412,14 @@ static const struct drm_encoder_funcs dw_hdmi_rockchip_encoder_funcs = {
 
 static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder)
 {
+	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
+
+	/*
+	 * when plug out hdmi it will be switch cvbs and then phy bus width
+	 * must be set as 8
+	 */
+	if (hdmi->phy)
+		phy_set_bus_width(hdmi->phy, 8);
 }
 
 static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
@@ -424,6 +433,9 @@ static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
 	if (WARN_ON(!crtc || !crtc->state))
 		return;
 
+	if (hdmi->phy)
+		phy_set_bus_width(hdmi->phy, hdmi->phy_bus_width);
+
 	clk_set_rate(hdmi->vpll_clk,
 		     crtc->state->adjusted_mode.crtc_clock * 1000);
 
@@ -614,6 +626,7 @@ dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
 			bus_width = colordepth;
 	}
 
+	hdmi->phy_bus_width = bus_width;
 	if (hdmi->phy)
 		phy_set_bus_width(hdmi->phy, bus_width);