diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index bf2c845ef3a2..b7b37082a9d7 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -2201,7 +2201,7 @@ static const struct panel_desc innolux_g121i1_l01 = {
 		.enable = 200,
 		.disable = 20,
 	},
-	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
+	.bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
 	.connector_type = DRM_MODE_CONNECTOR_LVDS,
 };