[U-Boot] [PATCH v2 3/3] ti_armv7_common: env: Use partuuid for detecting mmc root fs

[Lokesh Vutla]

Linux kernel can enumerate mmc sd as either mmcblk0 or mmcblk1.
But u-boot default environment assumes that sd always populates
as mmcblk0. With this the root fs is not being mounted when
mmc sd is enumerated as mmcblk1.
So use partuuid to update root= option in default environment.

Reported-by: Yan Liu <yan-liu at ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
 include/configs/ti_armv7_common.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/configs/ti_armv7_common.h b/include/configs/ti_armv7_common.h
index 1a4b6d9..6dc6515 100644
--- a/include/configs/ti_armv7_common.h
+++ b/include/configs/ti_armv7_common.h
@@ -61,9 +61,10 @@
 #define DEFAULT_MMC_TI_ARGS \
 	"mmcdev=0\0" \
 	"mmcrootfstype=ext4 rootwait\0" \
-	"args_mmc=setenv bootargs console=${console} " \
+	"finduuid=part uuid mmc 0:2 uuid\0" \
+	"args_mmc=run finduuid;setenv bootargs console=${console} " \
 		"${optargs} " \
-		"root=${mmcroot} " \
+		"root=PARTUUID=${uuid} rw " \
 		"rootfstype=${mmcrootfstype}\0"
 
 /*
-- 
2.1.4