Re: [PATCH v4 1/4] arm64: dts: qcom: monaco-evk: Extract common EVK hardware into shared dtsi

Umang Chheda
2026-05-05T13:47:27Z

Hi Dmitry,

On 5/5/2026 4:58 AM, Dmitry Baryshkov wrote:
> On Tue, May 05, 2026 at 12:56:15AM +0530, Umang Chheda wrote:
>> Hello Dmitry,
>>
>>
>> On 5/5/2026 12:14 AM, Dmitry Baryshkov wrote:
>>> On Mon, Apr 27, 2026 at 10:35:02PM +0530, Umang Chheda wrote:
>>>> The monaco-ac EVK is a new board variant which shares the majority of
>>>> its hardware description with the existing monaco-evk board.
>>>
>>> No, this is not a good reason. Is there a common PCB? There was a long
>>> discussion for it for the Hamoa / Purwa EVK.
>>
>> PCB is not common for these 2 boards.
>>
>> Also, not sure if I mis-understood you - You had mentioned to have a
>> common file for both the variants [1] in the earlier version of patch
>> hence refactored it this way.
>
> There was an explicit question if PCB is the same as a prerequisite for
> the unification of DTS

Thanks for the clarification.

This was discussed in the earlier v2 [1] — even though the PCB is not
common, the majority of the hardware blocks and their wiring are
functionally identical between monaco-evk and monaco-ac-evk, with only
difference in H/W being 4 PMIC in monaco-evk v/s 2 PMIC on monaco-ac-evk
and the rail which is supplied to the SDHC controller.

The intent here is to avoid duplication across the two boards rather
than imply a shared PCB, similar to what was discussed earlier.

If this approach is still not acceptable without a common PCB, can I
drop the refactoring and keep the DTS files fully separate ?

[1]
https://lore.kernel.org/all/8f79000d-ccbb-403c-871c-7a36423c9eee@oss.qualcomm.com/

>
>>
>> [1]
>> https://lore.kernel.org/lkml/7r6373fo56alzqa4e2zzdnsgwfhgdkmbhxe4cvdo4p7fg3zren@eyiml4uedfbn/
>>
>>>
>>>>
>>>> In preparation for adding this variant, extract the common hardware
>>>> nodes from monaco-evk.dts into a new shared monaco-evk-common.dtsi
>>>> include file, and update monaco-evk.dts to include it and keep only
>>>> board-specific overrides.
>>>>
>>>> No functional change intended.
>>>>
>>>> Signed-off-by: Umang Chheda <umang.chheda@oss.qualcomm.com>
>>>> ---
>>>
>>
>> Thanks,
>> Umang
>>
>

Thanks,
Umang