diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index bbb781c..d83bf87 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -50,6 +50,8 @@
 		REG_SET(x, win->base, win->phy->name, v, RELAXED)
 #define VOP_SCL_SET(x, win, name, v) \
 		REG_SET(x, win->base, win->phy->scl->name, v, RELAXED)
+#define VOP_SCL_SET_EXT(x, win, name, v) \
+		REG_SET(x, win->base, win->phy->scl->ext->name, v, RELAXED)
 #define VOP_CTRL_SET(x, name, v) \
 		REG_SET(x, 0, (x)->data->ctrl->name, v, NORMAL)
 
@@ -313,6 +315,20 @@ static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 		return;
 	}
 
+	if (!win->phy->scl->ext) {
+		VOP_SCL_SET(vop, win, scale_yrgb_x,
+			    scl_cal_scale2(src_w, dst_w));
+		VOP_SCL_SET(vop, win, scale_yrgb_y,
+			    scl_cal_scale2(src_h, dst_h));
+		if (is_yuv) {
+			VOP_SCL_SET(vop, win, scale_cbcr_x,
+				    scl_cal_scale2(src_w, dst_w));
+			VOP_SCL_SET(vop, win, scale_cbcr_y,
+				    scl_cal_scale2(src_h, dst_h));
+		}
+		return;
+	}
+
 	yrgb_hor_scl_mode = scl_get_scl_mode(src_w, dst_w);
 	yrgb_ver_scl_mode = scl_get_scl_mode(src_h, dst_h);
 
@@ -330,7 +346,7 @@ static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 			lb_mode = scl_vop_cal_lb_mode(src_w, false);
 	}
 
-	VOP_SCL_SET(vop, win, lb_mode, lb_mode);
+	VOP_SCL_SET_EXT(vop, win, lb_mode, lb_mode);
 	if (lb_mode == LB_RGB_3840X2) {
 		if (yrgb_ver_scl_mode != SCALE_NONE) {
 			DRM_ERROR("ERROR : not allow yrgb ver scale\n");
@@ -354,14 +370,14 @@ static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 				false, vsu_mode, &vskiplines);
 	VOP_SCL_SET(vop, win, scale_yrgb_y, val);
 
-	VOP_SCL_SET(vop, win, vsd_yrgb_gt4, vskiplines == 4);
-	VOP_SCL_SET(vop, win, vsd_yrgb_gt2, vskiplines == 2);
+	VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt4, vskiplines == 4);
+	VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt2, vskiplines == 2);
 
-	VOP_SCL_SET(vop, win, yrgb_hor_scl_mode, yrgb_hor_scl_mode);
-	VOP_SCL_SET(vop, win, yrgb_ver_scl_mode, yrgb_ver_scl_mode);
-	VOP_SCL_SET(vop, win, yrgb_hsd_mode, SCALE_DOWN_BIL);
-	VOP_SCL_SET(vop, win, yrgb_vsd_mode, SCALE_DOWN_BIL);
-	VOP_SCL_SET(vop, win, yrgb_vsu_mode, vsu_mode);
+	VOP_SCL_SET_EXT(vop, win, yrgb_hor_scl_mode, yrgb_hor_scl_mode);
+	VOP_SCL_SET_EXT(vop, win, yrgb_ver_scl_mode, yrgb_ver_scl_mode);
+	VOP_SCL_SET_EXT(vop, win, yrgb_hsd_mode, SCALE_DOWN_BIL);
+	VOP_SCL_SET_EXT(vop, win, yrgb_vsd_mode, SCALE_DOWN_BIL);
+	VOP_SCL_SET_EXT(vop, win, yrgb_vsu_mode, vsu_mode);
 	if (is_yuv) {
 		val = scl_vop_cal_scale(cbcr_hor_scl_mode, cbcr_src_w,
 					dst_w, true, 0, NULL);
@@ -370,13 +386,13 @@ static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 					dst_h, false, vsu_mode, &vskiplines);
 		VOP_SCL_SET(vop, win, scale_cbcr_y, val);
 
-		VOP_SCL_SET(vop, win, vsd_cbcr_gt4, vskiplines == 4);
-		VOP_SCL_SET(vop, win, vsd_cbcr_gt2, vskiplines == 2);
-		VOP_SCL_SET(vop, win, cbcr_hor_scl_mode, cbcr_hor_scl_mode);
-		VOP_SCL_SET(vop, win, cbcr_ver_scl_mode, cbcr_ver_scl_mode);
-		VOP_SCL_SET(vop, win, cbcr_hsd_mode, SCALE_DOWN_BIL);
-		VOP_SCL_SET(vop, win, cbcr_vsd_mode, SCALE_DOWN_BIL);
-		VOP_SCL_SET(vop, win, cbcr_vsu_mode, vsu_mode);
+		VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt4, vskiplines == 4);
+		VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt2, vskiplines == 2);
+		VOP_SCL_SET_EXT(vop, win, cbcr_hor_scl_mode, cbcr_hor_scl_mode);
+		VOP_SCL_SET_EXT(vop, win, cbcr_ver_scl_mode, cbcr_ver_scl_mode);
+		VOP_SCL_SET_EXT(vop, win, cbcr_hsd_mode, SCALE_DOWN_BIL);
+		VOP_SCL_SET_EXT(vop, win, cbcr_vsd_mode, SCALE_DOWN_BIL);
+		VOP_SCL_SET_EXT(vop, win, cbcr_vsu_mode, vsu_mode);
 	}
 }
 
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
index cbb114a..9a44153 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
@@ -66,7 +66,8 @@ struct vop_intr {
 	struct vop_reg clear;
 	struct vop_reg status;
 };
-struct vop_scl_regs {
+
+struct vop_scl_extension {
 	struct vop_reg cbcr_vsd_mode;
 	struct vop_reg cbcr_vsu_mode;
 	struct vop_reg cbcr_hsd_mode;
@@ -87,8 +88,12 @@ struct vop_scl_regs {
 	struct vop_reg bic_coe_sel;
 	struct vop_reg cbcr_axi_gather_en;
 	struct vop_reg yrgb_axi_gather_en;
-
 	struct vop_reg lb_mode;
+};
+
+struct vop_scl_regs {
+	const struct vop_scl_extension *ext;
+
 	struct vop_reg scale_yrgb_x;
 	struct vop_reg scale_yrgb_y;
 	struct vop_reg scale_cbcr_x;
@@ -242,6 +247,11 @@ static inline uint16_t scl_cal_scale(int src, int dst, int shift)
 	return ((src * 2 - 3) << (shift - 1)) / (dst - 1);
 }
 
+static inline uint16_t scl_cal_scale2(int src, int dst)
+{
+	return (src - 1) << 12 / (dst - 1);
+}
+
 #define GET_SCL_FT_BILI_DN(src, dst)	scl_cal_scale(src, dst, 12)
 #define GET_SCL_FT_BILI_UP(src, dst)	scl_cal_scale(src, dst, 16)
 #define GET_SCL_FT_BIC(src, dst)	scl_cal_scale(src, dst, 16)
diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index d47bfc3..6495114 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -50,7 +50,7 @@ static const uint32_t formats_234[] = {
 	DRM_FORMAT_BGR565,
 };
 
-static const struct vop_scl_regs win_full_scl = {
+static const struct vop_scl_extension win_full_ext = {
 	.cbcr_vsd_mode = VOP_REG(WIN0_CTRL1, 0x1, 31),
 	.cbcr_vsu_mode = VOP_REG(WIN0_CTRL1, 0x1, 30),
 	.cbcr_hsd_mode = VOP_REG(WIN0_CTRL1, 0x3, 28),
@@ -72,6 +72,9 @@ static const struct vop_scl_regs win_full_scl = {
 	.cbcr_axi_gather_en = VOP_REG(WIN0_CTRL1, 0x1, 1),
 	.yrgb_axi_gather_en = VOP_REG(WIN0_CTRL1, 0x1, 0),
 	.lb_mode = VOP_REG(WIN0_CTRL0, 0x7, 5),
+};
+
+static const struct vop_scl_regs win_full_scl = {
 	.scale_yrgb_x = VOP_REG(WIN0_SCL_FACTOR_YRGB, 0xffff, 0x0),
 	.scale_yrgb_y = VOP_REG(WIN0_SCL_FACTOR_YRGB, 0xffff, 16),
 	.scale_cbcr_x = VOP_REG(WIN0_SCL_FACTOR_CBR, 0xffff, 0x0),
