[PATCH] ARM: i.MX: karo-tx6: use mmcboot handler

[PATCH] ARM: i.MX: karo-tx6: use mmcboot handler

[Fabian Pfitzner]

Use the mmcboot handler instead. This handler automatically determines
the boot partition by considering the partition's state, thus avoiding
to specify it manually.

Signed-off-by: Fabian Pfitzner <f.pfitzner@pengutronix.de>
---
 arch/arm/boards/karo-tx6x/board.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boards/karo-tx6x/board.c b/arch/arm/boards/karo-tx6x/board.c
index f3ff59afb9..43e23f00cd 100644
--- a/arch/arm/boards/karo-tx6x/board.c
+++ b/arch/arm/boards/karo-tx6x/board.c
@@ -115,7 +115,7 @@ static int tx6x_devices_init(void)
 		of_device_enable_and_register_by_name("environment-nand");
 		of_device_enable_and_register_by_alias("nand");
 	} else {
-		imx6_bbu_internal_mmc_register_handler("eMMC", "/dev/mmc3.boot0",
+		imx6_bbu_internal_mmcboot_register_handler("eMMC", "/dev/mmc3",
 						       BBU_HANDLER_FLAG_DEFAULT);
 		of_device_enable_and_register_by_name("environment-emmc");
 		of_device_enable_and_register_by_alias("mmc3");
-- 
2.47.3

[PATCH] fixup! ARM: i.MX: karo-tx6: use mmcboot handler

[Ahmad Fatoum]

Documentation: migration-2025.11.0: mention Karo bbu change

The existing method of hardcoding boot0 is not power-fail safe, so it's
hopefully not used by userspace to update the bootloader, but in any
case a warning sounds apt.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 .../migration-guides/migration-2025.11.0.rst        | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/migration-guides/migration-2025.11.0.rst b/Documentation/migration-guides/migration-2025.11.0.rst
index 9cbc46acc39b..a9c7abb66ef0 100644
--- a/Documentation/migration-guides/migration-2025.11.0.rst
+++ b/Documentation/migration-guides/migration-2025.11.0.rst
@@ -1,3 +1,6 @@
+Release v2025.11.0
+==================
+
 i.MX GPIOs
 ----------
 
@@ -5,3 +8,13 @@ Reading output GPIOs now returns the configured output level instead
 of reading back the input register. This aligns us with what Linux
 is doing, but may falsify readings of single-ended GPIOs that have
 the SION bit configured.
+
+Board support
+-------------
+
+Karo TX6X
+^^^^^^^^^
+
+The barebox update handler for this SoM no longer unconditionally updates
+/dev/mmc3.boot0, but instead it now updates the inactive boot partition
+on /dev/mmc3 and then sets it as active allowing for power-fail safety.
-- 
2.47.3

Re: [PATCH] ARM: i.MX: karo-tx6: use mmcboot handler

[Ahmad Fatoum]

On 10/21/25 4:41 PM, Fabian Pfitzner wrote:
> Use the mmcboot handler instead. This handler automatically determines
> the boot partition by considering the partition's state, thus avoiding
> to specify it manually.
> 
> Signed-off-by: Fabian Pfitzner <f.pfitzner@pengutronix.de>

Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

I think this is worth an entry in the migration guide. See the fixup I
just sent. I think Sascha can squash it if there are no other comments.

Cheers,
Ahmad

> ---
>  arch/arm/boards/karo-tx6x/board.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boards/karo-tx6x/board.c b/arch/arm/boards/karo-tx6x/board.c
> index f3ff59afb9..43e23f00cd 100644
> --- a/arch/arm/boards/karo-tx6x/board.c
> +++ b/arch/arm/boards/karo-tx6x/board.c
> @@ -115,7 +115,7 @@ static int tx6x_devices_init(void)
>  		of_device_enable_and_register_by_name("environment-nand");
>  		of_device_enable_and_register_by_alias("nand");
>  	} else {
> -		imx6_bbu_internal_mmc_register_handler("eMMC", "/dev/mmc3.boot0",
> +		imx6_bbu_internal_mmcboot_register_handler("eMMC", "/dev/mmc3",
>  						       BBU_HANDLER_FLAG_DEFAULT);
>  		of_device_enable_and_register_by_name("environment-emmc");
>  		of_device_enable_and_register_by_alias("mmc3");

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Re: [PATCH] ARM: i.MX: karo-tx6: use mmcboot handler

[Sascha Hauer]

On Tue, 21 Oct 2025 16:41:07 +0200, Fabian Pfitzner wrote:
> Use the mmcboot handler instead. This handler automatically determines
> the boot partition by considering the partition's state, thus avoiding
> to specify it manually.
> 
> 

Applied, thanks!

[1/1] ARM: i.MX: karo-tx6: use mmcboot handler
      https://git.pengutronix.de/cgit/barebox/commit/?id=0fc72287d87f (link may not be stable)
[1/1] fixup! ARM: i.MX: karo-tx6: use mmcboot handler
      https://git.pengutronix.de/cgit/barebox/commit/?id=39754cd17d0b (link may not be stable)

Best regards,
-- 
Sascha Hauer <s.hauer@pengutronix.de>