diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index f757c206b2ec..a0efdc02b4db 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -2095,6 +2095,7 @@ static void vop_plane_atomic_update(struct drm_plane *plane,
 	if ((is_alpha_support(fb->format->format) || global_alpha_en) &&
 	    (s->dsp_layer_sel & 0x3) != win->win_id) {
 		int src_blend_m0;
+		int pre_multi_alpha = ALPHA_SRC_PRE_MUL;
 
 		if (is_alpha_support(fb->format->format) && global_alpha_en)
 			src_blend_m0 = ALPHA_PER_PIX_GLOBAL;
@@ -2103,18 +2104,20 @@ static void vop_plane_atomic_update(struct drm_plane *plane,
 		else
 			src_blend_m0 = ALPHA_GLOBAL;
 
+		if (vop_plane_state->blend_mode == 0 || src_blend_m0 == ALPHA_GLOBAL)
+			pre_multi_alpha = ALPHA_SRC_NO_PRE_MUL;
+
 		VOP_WIN_SET(vop, win, dst_alpha_ctl,
 			    DST_FACTOR_M0(ALPHA_SRC_INVERSE));
-		val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) |
+		val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(pre_multi_alpha) |
 			SRC_ALPHA_M0(ALPHA_STRAIGHT) |
 			SRC_BLEND_M0(src_blend_m0) |
 			SRC_ALPHA_CAL_M0(ALPHA_SATURATION) |
 			SRC_FACTOR_M0(global_alpha_en ?
 				      ALPHA_SRC_GLOBAL : ALPHA_ONE);
 		VOP_WIN_SET(vop, win, src_alpha_ctl, val);
-		VOP_WIN_SET(vop, win, alpha_pre_mul,
-			    vop_plane_state->blend_mode == DRM_MODE_BLEND_PREMULTI ? 1 : 0);
-		VOP_WIN_SET(vop, win, alpha_mode, 1);
+		VOP_WIN_SET(vop, win, alpha_pre_mul, !pre_multi_alpha); /* VOP lite only */
+		VOP_WIN_SET(vop, win, alpha_mode, src_blend_m0); /* VOP lite only */
 		VOP_WIN_SET(vop, win, alpha_en, 1);
 	} else {
 		VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0));