diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 49d722795ab7d8ac9019cc9b8fc77584a1e43a59..dadb52a4c26c3afc127ff15626799be605a028c9 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2956,6 +2956,9 @@ u32 skl_plane_ctl_format(uint32_t pixel_format)
 	u32 format = 0;
 
 	switch (pixel_format) {
+	case DRM_FORMAT_C8:
+		format = PLANE_CTL_FORMAT_INDEXED;
+		break;
 	case DRM_FORMAT_RGB565:
 		format = PLANE_CTL_FORMAT_RGB_565;
 		break;