linux-kernel - Re: [PATCH v3 5/5] arm64: dts: qcom: sc7280: Add Reset support for gpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <eb18b9ce-95c2-a7a1-7429-57b82cc70de8@quicinc.com>
Date:   Fri, 19 Aug 2022 22:13:16 +0530
From:   Akhil P Oommen <quic_akhilpo@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        Rob Clark <robdclark@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC:     Douglas Anderson <dianders@...omium.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 5/5] arm64: dts: qcom: sc7280: Add Reset support for
 gpu

On 8/19/2022 11:47 AM, Krzysztof Kozlowski wrote:
> On 18/08/2022 23:18, Akhil P Oommen wrote:
>> Add support for Reset using GPUCC driver for GPU. This helps to ensure
>> that GPU state is reset by making sure that CX head switch is collapsed.
>>
>> Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
>> ---
>>
>> (no changes since v1)
>>
>>   arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 +++
>>   1 file changed, 3 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> index e66fc67..f5257d6 100644
>> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
>> @@ -2243,6 +2243,9 @@
>>   			nvmem-cells = <&gpu_speed_bin>;
>>   			nvmem-cell-names = "speed_bin";
>>   
>> +			resets = <&gpucc GPU_CX_COLLAPSE>;
>> +			reset-names = "cx_collapse";
>> +
> I think this is not allowed by bindings. Did you test your change with
> dtbs_check?
>
> Best regards,
> Krzysztof
My bad! Thanks for pointing this out. Fixed in v4 with patch 5/6.

-Akhil.