--- zzzz-none-000/linux-4.19.183/drivers/mtd/Kconfig	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/drivers/mtd/Kconfig	2023-06-28 08:54:19.000000000 +0000
@@ -109,6 +109,17 @@
 
 	  If unsure, say 'N'.
 
+config MTD_CMDLINE_PARTS_EXT
+	bool "Support for multiple command line partition table arguments"
+	default y
+	depends on MTD_CMDLINE_PARTS
+	help
+	  Support a variant of the "mtdparts" command line argument,
+	  "mtdparts_ext" which can be specified multiple times, supporting the
+	  same syntax as the original.  Multiple arguments are aggregated.
+
+	  This is an AVM extension.
+
 config MTD_AFS_PARTS
 	tristate "ARM Firmware Suite partition parsing"
 	depends on (ARM || ARM64)