[U-Boot] [PATCH v2 19/23] apalis_imx6: revert fuse value set in mfgr_fuse

Marcel Ziswiler
2019-02-08T17:12:22Z

From: Max Krummenacher <max.krummenacher@toradex.com>

We have two commands to change the bootmode fuses:
mfgr_fuse which set fuse 0/5 and 0/6
and
updt_fuse which burns bit 4 of 0/5.

Before BSP 2.6 we fused in mfgr_fuse 0x5062, which boots
from the user partition of the eMMC.
To workaround certain hangs we moved to fastboot mode and
using the first bootpartition of the eMMC requiring a fuse
value of 0x5072 which could be achieved by the then added
updt_fuse command. At the same time the mfgr_fuse command
was changed to also fuse 0x5072, revert that second change
so that one can fuse both values, one with just mfgr_fuse
and the later with mfgr_fuse;updt_fuse.

Note that the mfgr_fuse command is only needed at module
production time, a customer might need to use updt_fuse
when upgrading an older module to be compatible with a
newer image. The command is integrated into the image
update scripts.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>

---

Changes in v2:
- Remove Colibri iMX6 change which inadvertently slipped in here.

board/toradex/apalis_imx6/do_fuse.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/board/toradex/apalis_imx6/do_fuse.c b/board/toradex/apalis_imx6/do_fuse.c
index e6793e366a..22d191f52a 100644
--- a/board/toradex/apalis_imx6/do_fuse.c
+++ b/board/toradex/apalis_imx6/do_fuse.c
@@ -29,7 +29,7 @@ static int mfgr_fuse(void)
return CMD_RET_FAILURE;
}
/* boot cfg */
- fuse_prog(0, 5, 0x00005072);
+ fuse_prog(0, 5, 0x00005062);
/* BT_FUSE_SEL */
fuse_prog(0, 6, 0x00000010);
return CMD_RET_SUCCESS;
--
2.20.1