[Uboot-stm32] [PATCH] ARM: dts: stm32: Add bootph-all in ltdc node in stm32mp257f-ev1-u-boot

[Patrice CHOTARD]

On 1/19/26 08:53, Patrice CHOTARD wrote:
> 
> 
> On 1/16/26 20:28, Tom Rini wrote:
>> On Fri, Jan 16, 2026 at 08:12:06PM +0100, Patrice Chotard wrote:
>>
>>> Add bootph-all property in ltdc node in stm32mp257f-ev1-u-boot.dtsi
>>> to fix the following issue :
>>>
>>> Video device 'display-controller at 48010000' cannot allocate frame buffer
>>> memory - ensure the device is set up beforen
>>> stm32_rifsc bus at 42080000: display-controller at 48010000 failed to bind on
>>> bus (-28)
>>> stm32_rifsc bus at 42080000: Some child failed to bind (-28)
>>> initcall_run_r(): initcall initr_dm() failed
>>> ERROR ### Please RESET the board ###
>>>
>>> Fixes: 29ab19c2bead ("Subtree merge tag 'v6.18-dts' of dts repo [1] into dts/upstream")
>>>
>>> Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
>>> ---
>>>  arch/arm/dts/stm32mp257f-ev1-u-boot.dtsi | 4 ++++
>>>  1 file changed, 4 insertions(+)
>>>
>>> diff --git a/arch/arm/dts/stm32mp257f-ev1-u-boot.dtsi b/arch/arm/dts/stm32mp257f-ev1-u-boot.dtsi
>>> index b70cd8b52ce..c3c9c94f165 100644
>>> --- a/arch/arm/dts/stm32mp257f-ev1-u-boot.dtsi
>>> +++ b/arch/arm/dts/stm32mp257f-ev1-u-boot.dtsi
>>> @@ -52,6 +52,10 @@
>>>  	};
>>>  };
>>>  
>>> +&ltdc {
>>> +	bootph-all;
>>> +};
>>> +
>>>  &usart2 {
>>>  	bootph-all;
>>>  };
>>>
>>
>> Are you upstreaming these? Thanks.
>>
> Hi Tom
> 
> I didn't get your point. Is there a problem ?
> Yes of course i'm upstreaming this.

I think i understood your remark, currently without this patch the board stm32mp257f-ev1 can't boot.
I temporarily added the bootph-all in stm32mp257f-ev1-u-boot.dtsi to allow this board to reach at least
the U-Boot console.

In kernel side, i submitted a series which add u-boot bootph-all property for STM32 boards which is not already merged [1].
When this kernel series will be merged and U-Boot will be synchonized with this kernel DT, i will then revert this patch.

[1] https://lore.kernel.org/linux-arm-kernel/20260109-upstream_uboot_properties-v4-0-75e06657c600@foss.st.com/

Patrice
> 
> Thanks
> Patrice
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