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Message-ID: <eb18b9ce-95c2-a7a1-7429-57b82cc70de8@quicinc.com>
Date:   Fri, 19 Aug 2022 22:13:16 +0530
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Subject: Re: [PATCH v3 5/5] arm64: dts: qcom: sc7280: Add Reset support for
 gpu
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To:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        freedreno <freedreno@lists.freedesktop.org>,
        <dri-devel@lists.freedesktop.org>, <linux-arm-msm@vger.kernel.org>,
        Rob Clark <robdclark@gmail.com>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Stephen Boyd <swboyd@chromium.org>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
CC:     Douglas Anderson <dianders@chromium.org>,
        Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@somainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Rob Herring <robh+dt@kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
References: <1660853919-987-1-git-send-email-quic_akhilpo@quicinc.com>
 <20220819014758.v3.5.I6a1fca5d53c886c05ea3e24cd4282d31c9c0cd0b@changeid>
 <0cdca889-1193-1595-e524-5a0cfc633d14@linaro.org>
From:   Akhil P Oommen <quic_akhilpo@quicinc.com>
In-Reply-To: <0cdca889-1193-1595-e524-5a0cfc633d14@linaro.org>
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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@quicinc.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.