[Linux-stm32] [PATCH] [RFC] ARM: dts: stm32: Add DTs for STM32MP15x variants of the DH SOM and PDK2

[Alexandre Torgue]

On 3/24/20 2:22 PM, Marek Vasut wrote:
> On 3/24/20 2:04 PM, Alexandre Torgue wrote:
>>
>>
>> On 3/23/20 3:31 AM, Marek Vasut wrote:
>>> The DH PDK2 can be populated with SoM with any STM32MP15x variant.
>>> Add the DTs describing the remaining combinations.
>>>
>>> Signed-off-by: Marek Vasut <marex at denx.de>
>>> Cc: Alexandre Torgue <alexandre.torgue at st.com>
>>> Cc: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
>>> Cc: Patrice Chotard <patrice.chotard at st.com>
>>> Cc: Patrick Delaunay <patrick.delaunay at st.com>
>>> Cc: linux-stm32 at st-md-mailman.stormreply.com
>>> To: linux-arm-kernel at lists.infradead.org
>>> ---
>>> NOTE: Is there a better way to do this than to have this kind of a
>>>      combinatorial explosion of DTs ?
>>
>> I have no better idea. Question was the same for stm32 boards, and I
>> chose to take this option.
> 
> One option would be to just have DT for the most feature-complete option
> (157) and then have U-Boot remove the nodes for HW which is not present
> on the particular SoC option if it's one of the more limited ones (153,
> 151).
> 

Yes it was a possibility that I discussed with kevin H. at the latest 
ELCE but at the end the best way to follow was to enhance number of dts 
files. The best would be to have dedicated folders but it is another story.