diff --git a/include/uapi/linux/media/raspberrypi/pisp_be_config.h b/include/uapi/linux/media/raspberrypi/pisp_be_config.h
index cbeb714f4d61ad..82560db4da610f 100644
--- a/include/uapi/linux/media/raspberrypi/pisp_be_config.h
+++ b/include/uapi/linux/media/raspberrypi/pisp_be_config.h
@@ -716,13 +716,6 @@ struct pisp_be_hog_buffer_config {
 /**
  * struct pisp_be_config - RaspberryPi PiSP Back End Processing configuration
  *
- * @input_buffer:		Input buffer addresses
- * @tdn_input_buffer:		TDN input buffer addresses
- * @stitch_input_buffer:	Stitch input buffer addresses
- * @tdn_output_buffer:		TDN output buffer addresses
- * @stitch_output_buffer:	Stitch output buffer addresses
- * @output_buffer:		Output buffers addresses
- * @hog_buffer:			HOG buffer addresses
  * @global:			Global PiSP configuration
  * @input_format:		Input image format
  * @decompress:			Decompress configuration
@@ -761,28 +754,10 @@ struct pisp_be_hog_buffer_config {
  * @output_format:		Output format configuration
  * @hog:			HOG configuration
  * @axi:			AXI bus configuration
- * @lsc_extra:			LSC extra info
- * @cac_extra:			CAC extra info
- * @downscale_extra:		Downscaler extra info
- * @resample_extra:		Resample extra info
- * @crop:			Crop configuration
- * @hog_format:			HOG format info
- * @dirty_flags_bayer:		Bayer enable dirty flags
- *				(:c:type:`pisp_be_bayer_enable`)
- * @dirty_flags_rgb:		RGB enable dirty flags
- *				(:c:type:`pisp_be_rgb_enable`)
- * @dirty_flags_extra:		Extra dirty flags
  */
 struct pisp_be_config {
-	/* I/O configuration: */
-	struct pisp_be_input_buffer_config input_buffer;
-	struct pisp_be_tdn_input_buffer_config tdn_input_buffer;
-	struct pisp_be_stitch_input_buffer_config stitch_input_buffer;
-	struct pisp_be_tdn_output_buffer_config tdn_output_buffer;
-	struct pisp_be_stitch_output_buffer_config stitch_output_buffer;
-	struct pisp_be_output_buffer_config
-				output_buffer[PISP_BACK_END_NUM_OUTPUTS];
-	struct pisp_be_hog_buffer_config hog_buffer;
+	/* For backward compatibility */
+	uint8_t pad0[112];
 	/* Processing configuration: */
 	struct pisp_be_global_config global;
 	struct pisp_image_format_config input_format;
@@ -823,17 +798,8 @@ struct pisp_be_config {
 				output_format[PISP_BACK_END_NUM_OUTPUTS];
 	struct pisp_be_hog_config hog;
 	struct pisp_be_axi_config axi;
-	/* Non-register fields: */
-	struct pisp_be_lsc_extra lsc_extra;
-	struct pisp_be_cac_extra cac_extra;
-	struct pisp_be_downscale_extra
-				downscale_extra[PISP_BACK_END_NUM_OUTPUTS];
-	struct pisp_be_resample_extra resample_extra[PISP_BACK_END_NUM_OUTPUTS];
-	struct pisp_be_crop_config crop;
-	struct pisp_image_format_config hog_format;
-	__u32 dirty_flags_bayer; /* these use pisp_be_bayer_enable */
-	__u32 dirty_flags_rgb; /* use pisp_be_rgb_enable */
-	__u32 dirty_flags_extra; /* these use pisp_be_dirty_t */
+	/* For backward compatibility */
+	uint8_t pad1[84];
 } __attribute__((packed));
 
 /**