diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index 3707f6f364e1..e4df700d012d 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -1815,7 +1815,7 @@ static const struct vop_ctrl rv1126_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),