diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 6bf86a3f3c51..5ec079eafbf7 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -5,6 +5,7 @@
 
 #include <linux/clk.h>
 #include <linux/hw_bitfield.h>
+#include <linux/media-bus-format.h>
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -275,6 +276,26 @@ static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder)
 	dev_dbg(hdmi->dev, "vop %s output to hdmi\n", ret ? "LIT" : "BIG");
 }
 
+static u32 dw_hdmi_rockchip_get_bus_format(struct drm_encoder *encoder,
+					   struct drm_connector_state *conn_state)
+{
+	struct drm_bridge *bridge __free(drm_bridge_put) = NULL;
+	struct drm_bridge_state *bridge_state;
+
+	bridge = drm_bridge_chain_get_first_bridge(encoder);
+	if (!bridge)
+		return 0;
+
+	bridge_state = drm_atomic_get_bridge_state(conn_state->state, bridge);
+	if (!bridge_state)
+		return 0;
+
+	if (bridge_state->input_bus_cfg.format != MEDIA_BUS_FMT_FIXED)
+		return bridge_state->input_bus_cfg.format;
+
+	return bridge_state->output_bus_cfg.format;
+}
+
 static int
 dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
 				      struct drm_crtc_state *crtc_state,
@@ -283,9 +304,30 @@ dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder,
 	struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
 	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
 	union phy_configure_opts opts = {};
+	u32 bus_format;
+
+	bus_format = dw_hdmi_rockchip_get_bus_format(encoder, conn_state);
+
+	switch (bus_format) {
+	case MEDIA_BUS_FMT_FIXED:
+		bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+		fallthrough;
+	case MEDIA_BUS_FMT_RGB888_1X24:
+	case MEDIA_BUS_FMT_RGB101010_1X30:
+	case MEDIA_BUS_FMT_YUV8_1X24:
+	case MEDIA_BUS_FMT_YUV10_1X30:
+		s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
+		break;
+	case MEDIA_BUS_FMT_UYYVYY8_0_5X24:
+	case MEDIA_BUS_FMT_UYYVYY10_0_5X30:
+		s->output_mode = ROCKCHIP_OUT_MODE_YUV420;
+		break;
+	default:
+		return -EINVAL;
+	}
 
-	s->output_mode = ROCKCHIP_OUT_MODE_AAAA;
 	s->output_type = DRM_MODE_CONNECTOR_HDMIA;
+	s->bus_format = bus_format;
 
 	if (!hdmi->phy || !conn_state->hdmi.tmds_char_rate)
 		return 0;