linux-kernel - Re: [PATCH 1/2] dt-bindings: arm: qcom: document AL02-Cx and AL03-C2 boards based on IPQ9574 family

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Date:   Wed, 26 Jul 2023 10:33:41 +0530
From:   Sridharan S N <quic_sridsn@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <agross@...nel.org>, <andersson@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] dt-bindings: arm: qcom: document AL02-Cx and AL03-C2
 boards based on IPQ9574 family


On 7/20/2023 3:18 PM, Konrad Dybcio wrote:
> On 20.07.2023 10:49, Krzysztof Kozlowski wrote:
>> On 20/07/2023 10:45, Sridharan S N wrote:
>>> Document the below listed (Reference Design Platform) RDP boards based on IPQ9574
>>> family of SoCs.
>>>
>>> AL02-C3  - rdp437
>>> AL02-C7  - rdp433-mht-phy
>>> AL02-C10 - rdp433-mht-switch
>>> AL02-C11 - rdp467
>>> AL02-C12 - rdp455
>>> AL02-C13 - rdp459
>>> AL02-C15 - rdp457
>>> AL02-C16 - rdp456
>>> AL02-C17 - rdp469
>>> AL02-C19 - rdp461
>>> AL03-C2  - rdp458
>>>
>>> Signed-off-by: Sridharan S N <quic_sridsn@...cinc.com>
>>> ---
>>>   .../devicetree/bindings/arm/qcom.yaml         | 20 +++++++++++++++++++
>>>   1 file changed, 20 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
>>> index dd66fd872c31..d992261da691 100644
>>> --- a/Documentation/devicetree/bindings/arm/qcom.yaml
>>> +++ b/Documentation/devicetree/bindings/arm/qcom.yaml
>>> @@ -89,10 +89,20 @@ description: |
>>>           adp
>>>           ap-al01-c1
>>>           ap-al02-c2
>>> +        ap-al02-c3
>>>           ap-al02-c6
>>>           ap-al02-c7
>>>           ap-al02-c8
>>>           ap-al02-c9
>>> +        ap-al02-c10
>>> +        ap-al02-c11
>>> +        ap-al02-c12
>>> +        ap-al02-c13
>>> +        ap-al02-c15
>>> +        ap-al02-c16
>>> +        ap-al02-c17
>>> +        ap-al02-c19
>> Why? I asked once, but there was no feedback from Qualcomm.
>>
>> Why do we need to do this? What's the point?
> Another question would be, whether these boards are just one-off test
> prototypes of which there exist like 5-10 units, or are they actually
> going to be supported and useful.
>
> If it's the former, I don't think it makes sense to keep the device
> trees upstream.
>
> Konrad

These are all not test rdps and each rdps has its own configurations. 
IPQ9574 has four pcie instances and one QDSP processor. Not all rdps use 
all of the interfaces and it will vary for each rdp. In next version , 
will post with each rdp's configuration explicitly

Thanks,

Sridharan