diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 1d76455ca933b61f2d6813c726ba21dd2f3a314e..c80f7d9fd13f81c4d92c00651f08a9c072643323 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1007,6 +1007,10 @@ static void vop_plane_atomic_update(struct drm_plane *plane,
 			SRC_ALPHA_CAL_M0(ALPHA_NO_SATURATION) |
 			SRC_FACTOR_M0(ALPHA_ONE);
 		VOP_WIN_SET(vop, win, src_alpha_ctl, val);
+
+		VOP_WIN_SET(vop, win, alpha_pre_mul, ALPHA_SRC_PRE_MUL);
+		VOP_WIN_SET(vop, win, alpha_mode, ALPHA_PER_PIX);
+		VOP_WIN_SET(vop, win, alpha_en, 1);
 	} else {
 		VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0));
 	}
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
index d03bdb531ef2c42a95d59cd30dc517d28e2a4f69..4a2099cb582e1c0cc57f648dbdf3bc9cde15cbc1 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
@@ -167,6 +167,9 @@ struct vop_win_phy {
 
 	struct vop_reg dst_alpha_ctl;
 	struct vop_reg src_alpha_ctl;
+	struct vop_reg alpha_pre_mul;
+	struct vop_reg alpha_mode;
+	struct vop_reg alpha_en;
 	struct vop_reg channel;
 };
 
diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index 2413deded22c5f58c0c90aab524939b86e2da2c4..80053d91a301f598b473e3d708f0e6460d3965d4 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -264,6 +264,9 @@ static const struct vop_win_phy px30_win0_data = {
 	.uv_mst = VOP_REG(PX30_WIN0_CBR_MST0, 0xffffffff, 0),
 	.yrgb_vir = VOP_REG(PX30_WIN0_VIR, 0x1fff, 0),
 	.uv_vir = VOP_REG(PX30_WIN0_VIR, 0x1fff, 16),
+	.alpha_pre_mul = VOP_REG(PX30_WIN0_ALPHA_CTRL, 0x1, 2),
+	.alpha_mode = VOP_REG(PX30_WIN0_ALPHA_CTRL, 0x1, 1),
+	.alpha_en = VOP_REG(PX30_WIN0_ALPHA_CTRL, 0x1, 0),
 };
 
 static const struct vop_win_phy px30_win1_data = {
@@ -277,6 +280,9 @@ static const struct vop_win_phy px30_win1_data = {
 	.dsp_st = VOP_REG(PX30_WIN1_DSP_ST, 0xffffffff, 0),
 	.yrgb_mst = VOP_REG(PX30_WIN1_MST, 0xffffffff, 0),
 	.yrgb_vir = VOP_REG(PX30_WIN1_VIR, 0x1fff, 0),
+	.alpha_pre_mul = VOP_REG(PX30_WIN1_ALPHA_CTRL, 0x1, 2),
+	.alpha_mode = VOP_REG(PX30_WIN1_ALPHA_CTRL, 0x1, 1),
+	.alpha_en = VOP_REG(PX30_WIN1_ALPHA_CTRL, 0x1, 0),
 };
 
 static const struct vop_win_phy px30_win2_data = {
@@ -291,6 +297,9 @@ static const struct vop_win_phy px30_win2_data = {
 	.dsp_st = VOP_REG(PX30_WIN2_DSP_ST0, 0x1fff1fff, 0),
 	.yrgb_mst = VOP_REG(PX30_WIN2_MST0, 0xffffffff, 0),
 	.yrgb_vir = VOP_REG(PX30_WIN2_VIR0_1, 0x1fff, 0),
+	.alpha_pre_mul = VOP_REG(PX30_WIN2_ALPHA_CTRL, 0x1, 2),
+	.alpha_mode = VOP_REG(PX30_WIN2_ALPHA_CTRL, 0x1, 1),
+	.alpha_en = VOP_REG(PX30_WIN2_ALPHA_CTRL, 0x1, 0),
 };
 
 static const struct vop_win_data px30_vop_big_win_data[] = {