linux-kernel - Re: [PATCH 2/6] dt-bindings: remoteproc: qcom,sm8550-pas: Add Kaanapali CDSP

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Message-ID: <540b1de6-c959-4911-925f-8163f5fa5147@oss.qualcomm.com>
Date: Mon, 29 Sep 2025 17:41:10 +0800
From: Jingyi Wang <jingyi.wang@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Krzysztof Kozłowski <k.kozlowski.k@...il.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, aiqun.yu@....qualcomm.com,
        tingwei.zhang@....qualcomm.com, trilok.soni@....qualcomm.com,
        yijie.yang@....qualcomm.com
Subject: Re: [PATCH 2/6] dt-bindings: remoteproc: qcom,sm8550-pas: Add
 Kaanapali CDSP



On 9/29/2025 5:34 PM, Dmitry Baryshkov wrote:
> On Mon, Sep 29, 2025 at 02:20:54PM +0800, Jingyi Wang wrote:
>>
>>
>> On 9/25/2025 9:48 AM, Krzysztof Kozłowski wrote:
>>> On Thu, 25 Sept 2025 at 08:37, Jingyi Wang <jingyi.wang@....qualcomm.com> wrote:
>>>>
>>>> Add remote processor PAS loader for Kaanapali CDSP processor, compatible
>>>> with earlier SM8550 with minor difference: one more sixth "shutdown-ack"
>>>> interrupt.
>>>>
>>>> Signed-off-by: Jingyi Wang <jingyi.wang@....qualcomm.com>
>>>> ---
>>>>  .../bindings/remoteproc/qcom,sm8550-pas.yaml          | 19 +++++++++++++++++++
>>>>  1 file changed, 19 insertions(+)
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
>>>> index be9e2a0bc060..031fdf36a66c 100644
>>>> --- a/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
>>>> +++ b/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
>>>> @@ -35,6 +35,9 @@ properties:
>>>>        - items:
>>>>            - const: qcom,sm8750-cdsp-pas
>>>>            - const: qcom,sm8650-cdsp-pas
>>>> +      - items:
>>>> +          - const: qcom,kaanapali-cdsp-pas
>>>> +          - const: qcom,sm8550-cdsp-pas
>>>
>>>
>>> This time maybe without HTML:
>>>
>>> This looks wrong. This is not compatible with SM8550.
>>
>> Could you point out what is the difference from your perspecetive?
>> it is the same as SM8550 except for there is one more interrupt,
>> which is also described in this patch.
> 
> I'd second Krzysztof here. Your description points out that it is _not_
> compatible to SM8550.
> 

Here is the binding for sm8750 cdsp. Fallback to sm8650 but describe the
difference in interrupt:
https://lore.kernel.org/all/20250221160036.159557-1-krzysztof.kozlowski@linaro.org/

Thanks,
Jingyi