linux-kernel - Re: [PATCH V1 1/2] dt-bindings: PCI: tegra234: Add ECAM support

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Date:   Fri, 28 Oct 2022 17:39:48 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        thierry.reding@...il.com, jonathanh@...dia.com,
        mperttunen@...dia.com
Cc:     devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, kthota@...dia.com,
        mmaddireddy@...dia.com, sagar.tv@...il.com
Subject: Re: [PATCH V1 1/2] dt-bindings: PCI: tegra234: Add ECAM support



On 10/28/2022 2:48 AM, Krzysztof Kozlowski wrote:
> External email: Use caution opening links or attachments
> 
> 
> On 27/10/2022 01:12, Vidya Sagar wrote:
>> Add support for ECAM aperture for Tegra234.
>>
>> Signed-off-by: Vidya Sagar <vidyas@...dia.com>
>> ---
>>   .../devicetree/bindings/pci/nvidia,tegra194-pcie.yaml  | 10 ++++++++--
>>   .../devicetree/bindings/pci/snps,dw-pcie.yaml          |  2 +-
>>   2 files changed, 9 insertions(+), 3 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
>> index 75da3e8eecb9..15cc2d2055bb 100644
>> --- a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
>> +++ b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
>> @@ -27,6 +27,7 @@ properties:
>>         - nvidia,tegra234-pcie
>>
>>     reg:
>> +    minItems: 4
>>       items:
>>         - description: controller's application logic registers
>>         - description: configuration registers
>> @@ -35,13 +36,17 @@ properties:
>>             available for software access.
>>         - description: aperture where the Root Port's own configuration
>>             registers are available.
>> +      - description: aperture to access the configuration space through ECAM.
>> +          This is applicable only for Tegra234.
> 
> Then restrict it per compatible in allOf
> 

Thanks Krzysztof for your review.
For a similar change here 
https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20220707081301.29961-3-vidyas@nvidia.com/ 
Rob had said that may be it is not worth it.
Let me know if you really want this change and I'll push a new patch.

Thanks,
Vidya Sagar

>>
> 
> Best regards,
> Krzysztof
>