Re: [PATCH v3 3/9] dt-bindings: PCI: renesas,pci-rcar-gen2: 'depends-on' is no more optional

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On 08/12/2022 10:05, Herve Codina wrote:
> Hi Krzysztof,
> 
> On Thu, 8 Dec 2022 09:26:41 +0100
> Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> wrote:
> 
>> On 07/12/2022 17:24, Herve Codina wrote:
>>> The 'depends-on' property is set in involved DTS.
>>>
>>> Move it to a required property.
>>>
>>> Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx>
>>> ---
>>>  Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml | 1 +  
>>
>> This should be squashed with previous patch. There is no point to add
>> property and immediately in the next patch make it required. Remember
>> that bindings are separate from DTS.
>>
>> Best regards,
>> Krzysztof
>>
> 
> I though about make dtbs_check in case of git bisect.

And what would this commit change? In Git you will have
1. dt-bindings: PCI: renesas,pci-rcar-gen2: Add depends-on for RZ/N1 SoC
family
2. dt-bindings: PCI: renesas,pci-rcar-gen2: 'depends-on' is no more optional

so what is the difference for git bisect?

> 
> But, ok I will squash or perhaps remove completely this commit.
> It introduces a DT compatibility break adding a new mandatory
> property (raised by Rob on cover letter review).
> Is this compatibility break can be acceptable ?

Requiring property in bindings as a fix for something which was broken
is ok. But this is independent of Linux drivers, which should not stop
working.

Best regards,
Krzysztof




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