colibri_imx7: use device-tree for MTD partitions

Use device-tree fixup to communicate the MTD partitions to the
kernel. Remove mtdparts from the kernel command line.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>

board/toradex/colibri_imx7/colibri_imx7.c

@@ -16,10 +16,13 @@
 #include <common.h>
 #include <dm.h>
 #include <dm/platform_data/serial_mxc.h>
+#include <fdt_support.h>
 #include <fsl_esdhc.h>
+#include <jffs2/load_kernel.h>
 #include <linux/sizes.h>
 #include <mmc.h>
 #include <miiphy.h>
+#include <mtd_node.h>
 #include <netdev.h>
 #include <power/pmic.h>
 #include <power/rn5t567_pmic.h>
@@ -421,6 +424,16 @@ int checkboard(void)
 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 int ft_board_setup(void *blob, bd_t *bd)
 {
+#if defined(CONFIG_FDT_FIXUP_PARTITIONS)
+	static struct node_info nodes[] = {
+		{ "fsl,imx7d-gpmi-nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
+	};
+
+	/* Update partition nodes using info from mtdparts env var */
+	puts("   Updating MTD partitions...\n");
+	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
+#endif
+
 	return ft_common_board_setup(blob, bd);
 }
 #endif

configs/colibri_imx7_defconfig

@@ -55,3 +55,4 @@ CONFIG_G_DNL_MANUFACTURER="Toradex"
 CONFIG_G_DNL_VENDOR_NUM=0x1b67
 CONFIG_G_DNL_PRODUCT_NUM=0x4000
 CONFIG_OF_LIBFDT_OVERLAY=y
+CONFIG_FDT_FIXUP_PARTITIONS=y

include/configs/colibri_imx7.h

@@ -120,7 +120,7 @@
 		"${board}/flash_blk.img && source ${loadaddr}\0" \
 	"setup=setenv setupargs " \
 		"console=tty1 console=${console}" \
-		",${baudrate}n8 ${memargs} consoleblank=0 ${mtdparts}\0" \
+		",${baudrate}n8 ${memargs} consoleblank=0\0" \
 	"setupdate=run setsdupdate || run setusbupdate || run setethupdate\0" \
 	"setusbupdate=usb start && setenv interface usb && " \
 		"fatload ${interface} 0:1 ${loadaddr} " \