linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: sm8650: Add dma-coherent property

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Message-ID: <ed9bf914-8b3e-401e-93c0-77eae97e2ab8@linaro.org>
Date: Mon, 12 Feb 2024 12:41:16 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Ling Xu <quic_lxu5@...cinc.com>, andersson@...nel.org,
 konrad.dybcio@...aro.org, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org
Cc: quic_kuiw@...cinc.com, quic_ekangupt@...cinc.com, kernel@...cinc.com,
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, "Aiqun Yu (Maria)" <quic_aiquny@...cinc.com>,
 Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sm8650: Add dma-coherent property

On 12/02/2024 12:31, Ling Xu wrote:
> 在 2024/2/12 19:10, Krzysztof Kozlowski 写道:
>> On 12/02/2024 12:00, Krzysztof Kozlowski wrote:
>>> On 25/01/2024 11:24, Ling Xu wrote:
>>>> Add dma-coherent property to fastRPC context bank nodes to pass dma
>>>> sequence test in fastrpc sanity test, ensure that data integrity is
>>>> maintained during DMA operations.
>>>>
>>>> Signed-off-by: Ling Xu <quic_lxu5@...cinc.com>
>>>> ---
>>>>  arch/arm64/boot/dts/qcom/sm8650.dtsi | 13 +++++++++++++
>>>
>>> This wasn't ever tested:
>>>
>>> sm8650-qrd.dtb: remoteproc@...00000: glink-edge:fastrpc:compute-cb@1:
>>> 'dma-coherent' does not match any of the regexes: 'pinctrl-[0-9]+'
>>>
>>> Ling,
>>> How is this testing-patches-before-sending work in different teams? Do
>>> you have such requirement?
>>
>> No clue if the original DTS change should be reverted or these are in
>> fact DMA coherent, but let's choose one path...
>>
>> https://lore.kernel.org/linux-devicetree/254c1d14-25e3-4f4c-9e79-4ef7cec4d22f@linaro.org/T/#t
>>
>> Best regards,
>> Krzysztof
>>
> Hi Krzysztof,
> Add dma-coherent: true in this file: Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml at line number 89 can pass the DTcheck.

I don't understand your comment. Did you read the link above?

Anyway, I was asking: are you testing the patches before sending?

Best regards,
Krzysztof