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

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Message-ID: <cdc01b6d-370d-45dd-a3fd-9866d2a5f36d@gmail.com>
Date: Thu, 9 Oct 2025 19:29:04 +0900
From: Krzysztof Kozlowski <k.kozlowski.k@...il.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
 Jingyi Wang <jingyi.wang@....qualcomm.com>
Cc: 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 29/09/2025 19:03, Dmitry Baryshkov wrote:
> On Mon, Sep 29, 2025 at 05:41:10PM +0800, Jingyi Wang wrote:
>>
>>
>> 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/
> 
> Interesting. Let's wait for Krzysztof's response then.
> 


Because it is evolution of sm8750, so it did not go back to old design.
from three generations ago. This is compatible with sm8750 or with sm8650.


Best regards,
Krzysztof