[PATCH 02/23] board: st: Update LED management for stm32mp1

Patrice CHOTARD patrice.chotard at foss.st.com
Fri Dec 5 10:24:26 CET 2025



On 12/4/25 16:38, Quentin Schulz wrote:
> Hi Patrice,
> 
> On 11/14/25 5:23 PM, Patrice Chotard wrote:
>> Remove get_led() and setup_led() which became obsolete since
>> led_boot_on() introduction. led_boot_on() is automatically called
>> from board_r.c
>>
> 
> Yes, but called later than board_init(). If this compromise is fine then it's ok.
> 
>> Regarding "u-boot,error-led" property can't be used anymore since commit
>> Since commit 516a13e8db32 ("led: update LED boot/activity to new property implementation")
>>
>> Instead get the LED labeled "red:status".
> 
> Would this work with stm32mp157a-dhcor-avenger96 (led4), stm32mp157c-odyssey (red but not "status" as function?) and stm32mp15xx-dhcom (error but possibly broken since commit 332facce6f5669fc1bb8d150c08cee2ebdae6d2b which removed the led with that label)? Seems like Odissey has LED=y and LED_GPIO=y so it probably worked before this patch? The other two, their defconfigs don't seem to enable LED support (new or legacy) so I guess it never was used anyway?

Hi Quentin

Regarding stm32mp157a-dhcor-avenger96, stm32mp157c-odyssey, stm32mp15xx-dhcom, these boards are not
STMicroelectronics board, so i don't maintain them.

> 
> I'm also wondering how you get this string... I don't see any label or LED_FUNCTION_STATUS function for the LED devices on ST boards. I'm probably missing on something?

As indicated in the cover-letter, the LED "red:status" has been added in kernel device tree by this serie:

[4] https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=1023034

U-Boot will inherit of these properties when the above kernel serie will be merged and U-Boot device tree 
synchronization will be performed.

Thanks
Patrice

> 
> Cheers,
> Quentin



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