diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index 949da8ff3066..b94263360ece 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
@@ -8702,7 +8702,7 @@ static bool vop2_crtc_mode_fixup(struct drm_crtc *crtc,
 	if (vop2->version == VOP_VERSION_RK3528 && vcstate->output_if & VOP_OUTPUT_IF_BT656)
 		adj_mode->crtc_clock *= 4;
 
-	if (vp->mcu_timing.mcu_pix_total)
+	if (vcstate->output_if & VOP_OUTPUT_IF_RGB)
 		adj_mode->crtc_clock *= rockchip_drm_get_cycles_per_pixel(vcstate->bus_format) *
 					(vp->mcu_timing.mcu_pix_total + 1);