diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
index 889982d8ca41..fa7540155d71 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
@@ -599,6 +599,44 @@ static int rkisp1_isp_enum_mbus_code(struct v4l2_subdev *sd,
 
 	return -EINVAL;
 }
+static int rkisp1_isp_enum_frame_size(struct v4l2_subdev *sd,
+				      struct v4l2_subdev_pad_config *cfg,
+				      struct v4l2_subdev_frame_size_enum *fse)
+{
+	int i;
+	bool code_match = false;
+
+	if (fse->pad == RKISP1_ISP_PAD_SINK_PARAMS ||
+	    fse->pad == RKISP1_ISP_PAD_SOURCE_STATS)
+		return -EINVAL;
+
+	if (fse->index > 0)
+		return -EINVAL;
+
+	for (i = 0; i < ARRAY_SIZE(rkisp1_isp_formats); i++) {
+		const struct rkisp1_isp_mbus_info *fmt = &rkisp1_isp_formats[i];
+
+		if (fmt->mbus_code == fse->code) {
+			code_match = true;
+			if (!(fmt->direction & RKISP1_ISP_SD_SINK) &&
+			    fse->pad == RKISP1_ISP_PAD_SINK_VIDEO)
+				return -EINVAL;
+			if (!(fmt->direction & RKISP1_ISP_SD_SRC) &&
+			    fse->pad == RKISP1_ISP_PAD_SOURCE_VIDEO)
+				return -EINVAL;
+		}
+	}
+
+	if (!code_match)
+		return -EINVAL;
+
+	fse->min_width = RKISP1_ISP_MIN_WIDTH;
+	fse->max_width = RKISP1_ISP_MAX_WIDTH;
+	fse->min_height = RKISP1_ISP_MIN_HEIGHT;
+	fse->max_height = RKISP1_ISP_MAX_HEIGHT;
+
+	return 0;
+}
 
 static int rkisp1_isp_init_config(struct v4l2_subdev *sd,
 				  struct v4l2_subdev_pad_config *cfg)
@@ -880,6 +918,7 @@ static int rkisp1_subdev_link_validate(struct media_link *link)
 
 static const struct v4l2_subdev_pad_ops rkisp1_isp_pad_ops = {
 	.enum_mbus_code = rkisp1_isp_enum_mbus_code,
+	.enum_frame_size = rkisp1_isp_enum_frame_size,
 	.get_selection = rkisp1_isp_get_selection,
 	.set_selection = rkisp1_isp_set_selection,
 	.init_cfg = rkisp1_isp_init_config,