board: tbs2910: Autoselect environment device when booting from SD
Implement board specific functions to select the environment device and
partition when booting from SD/MMC.
SD2: mmc 0 0
SD3: mmc 1 0
eMMC: mmc 2 1
Signed-off-by: Soeren Moch <smoch@web.de>
diff --git a/include/configs/tbs2910.h b/include/configs/tbs2910.h
index 17b0213..0f23034 100644
--- a/include/configs/tbs2910.h
+++ b/include/configs/tbs2910.h
@@ -176,8 +176,8 @@
/* Environment organization */
#define CONFIG_ENV_IS_IN_MMC
-#define CONFIG_SYS_MMC_ENV_DEV 2
-#define CONFIG_SYS_MMC_ENV_PART 1
+#define CONFIG_SYS_MMC_ENV_DEV 2 /* overwritten on SD boot */
+#define CONFIG_SYS_MMC_ENV_PART 1 /* overwritten on SD boot */
#define CONFIG_ENV_SIZE (8 * 1024)
#define CONFIG_ENV_OFFSET (384 * 1024)
#define CONFIG_ENV_OVERWRITE