diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 7e8640bbf605..6d3bf55c4351 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -3111,6 +3111,7 @@ static void vop_cfg_update(struct drm_crtc *crtc,
 
 	VOP_CTRL_SET(vop, afbdc_en, s->afbdc_en);
 	VOP_CTRL_SET(vop, dsp_layer_sel, s->dsp_layer_sel);
+	VOP_CTRL_SET(vop, win2_zpos, 2);
 	vop_post_config(crtc);
 
 	spin_unlock(&vop->reg_lock);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
index dd708d5c3089..ae9f316c6e6d 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
@@ -228,6 +228,7 @@ struct vop_ctrl {
 	struct vop_reg st2084oetf_post_conv_en;
 	struct vop_reg win_csc_mode_sel;
 
+	struct vop_reg win2_zpos;
 	struct vop_reg reg_done_frm;
 	struct vop_reg cfg_done;
 };
diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index 14025bfe6eeb..d2aca90320a7 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -1416,7 +1416,7 @@ static const struct vop_ctrl px30_ctrl_data = {
 	.dsp_interlace = VOP_REG(RK3366_LIT_DSP_CTRL2, 0x1, 0),
 	.global_regdone_en = VOP_REG(RK3366_LIT_SYS_CTRL2, 0x1, 13),
 	.auto_gate_en = VOP_REG(RK3366_LIT_SYS_CTRL2, 0x1, 0),
-	.dsp_layer_sel = VOP_REG(RK3366_LIT_DSP_CTRL2, 0xff, 22),
+	.dsp_layer_sel = VOP_REG(RK3366_LIT_DSP_CTRL2, 0xf, 22),
 	.overlay_mode = VOP_REG(RK3366_LIT_DSP_CTRL2, 0x1, 4),
 	.core_dclk_div = VOP_REG(RK3366_LIT_DSP_CTRL0, 0x1, 13),
 	.dclk_ddr = VOP_REG(RK3366_LIT_DSP_CTRL0, 0x1, 14),
@@ -1476,6 +1476,7 @@ static const struct vop_ctrl px30_ctrl_data = {
 	.cabc_stage_down = VOP_REG(PX30_CABC_CTRL2, 0xff, 0),
 	.cabc_global_dn = VOP_REG(PX30_CABC_CTRL3, 0xff, 0),
 	.cabc_global_dn_limit_en = VOP_REG(PX30_CABC_CTRL3, 0x1, 8),
+	.win2_zpos = VOP_REG(RK3366_LIT_DSP_CTRL2, 0x3, 26),
 };
 
 static const struct vop_win_phy px30_win23_data = {