colibri_t20: enable mtdparts support

Enable mtdparts aka dynamic MTD partition support.
Signed-off-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Acked-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NTom Warren <twarren@nvidia.com>

include/configs/colibri_t20.h

@@ -62,6 +62,17 @@
 #define CONFIG_TEGRA_NAND
 #define CONFIG_SYS_MAX_NAND_DEVICE     1
 
+/* Dynamic MTD partition support */
+#define CONFIG_CMD_MTDPARTS	/* Enable 'mtdparts' command line support */
+#define CONFIG_MTD_PARTITIONS
+#define CONFIG_MTD_DEVICE	/* needed for mtdparts commands */
+#define MTDIDS_DEFAULT		"nand0=tegra_nand"
+#define MTDPARTS_DEFAULT	"mtdparts=tegra_nand:"		\
+				"2m(u-boot)ro,"			\
+				"1m(u-boot-env),"		\
+				"1m(cfgblock)ro,"		\
+				"-(ubi)"
+
 /* Environment in NAND, 64K is a bit excessive but erase block is 512K anyway */
 #define CONFIG_ENV_IS_IN_NAND
 #define CONFIG_ENV_OFFSET              (SZ_2M)
@@ -74,6 +85,9 @@
 /* Miscellaneous commands */
 #define CONFIG_FAT_WRITE
 
+#define BOARD_EXTRA_ENV_SETTINGS \
+	"mtdparts=" MTDPARTS_DEFAULT "\0"
+
 /* Increase console I/O buffer size */
 #undef CONFIG_SYS_CBSIZE
 #define CONFIG_SYS_CBSIZE		1024