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Message-ID: <9dabe028-278c-4273-8a57-1cb080c1019d@linaro.org>
Date: Fri, 2 Feb 2024 13:19:57 +0100
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Subject: Re: [PATCH RFC 1/2] arm64: dts: qcom: msm8953: Add GPU IOMMU
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To: Luca Weiss <luca@z3ntu.xyz>,
 Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
 ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org,
 Bjorn Andersson <andersson@kernel.org>, Rob Herring <robh+dt@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, Vladimir Lypak <vladimir.lypak@gmail.com>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org
References: <20240125-msm8953-gpu-v1-0-f6493a5951f3@z3ntu.xyz>
 <d576e655-5d00-44ff-9405-0fceaa2d3935@linaro.org>
 <a75d8b2f-a55a-4087-b039-60769678a480@linaro.org>
 <6009977.lOV4Wx5bFT@z3ntu.xyz>
From: Konrad Dybcio <konrad.dybcio@linaro.org>
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In-Reply-To: <6009977.lOV4Wx5bFT@z3ntu.xyz>
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On 27.01.2024 18:24, Luca Weiss wrote:
> On Freitag, 26. Jänner 2024 00:49:55 CET Konrad Dybcio wrote:
>> On 1/25/24 23:24, Dmitry Baryshkov wrote:
>>> On 25/01/2024 23:56, Luca Weiss wrote:
>>>> From: Vladimir Lypak <vladimir.lypak@gmail.com>
>>>>
>>>> Add the IOMMU used for the GPU on MSM8953.
>>>>
>>>> Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
>>>> ---
>>>>   arch/arm64/boot/dts/qcom/msm8953.dtsi | 31
>>>> +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/qcom/msm8953.dtsi
>>>> b/arch/arm64/boot/dts/qcom/msm8953.dtsi index dcb5c98b793c..91d083871ab0
>>>> 100644
>>>> --- a/arch/arm64/boot/dts/qcom/msm8953.dtsi
>>>> +++ b/arch/arm64/boot/dts/qcom/msm8953.dtsi
>>>> @@ -1046,6 +1046,37 @@ mdss_dsi1_phy: phy@1a96400 {
>>>>               };
>>>>           };
>>>> +        gpu_iommu: iommu@1c48000 {
>>>
>>> Nit: most of the platforms use the adreno_smmu label. But maybe the
>>> msm-iommu vs arm-smmu makes difference here.
>> Not really :)
>>
>> Please keep the labels unified
> 
> Ack, renaming to adreno_smmu
> 
>>
>>> Nevertheless:
>>>
>>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
>>>
>>>> +            compatible = "qcom,msm8953-iommu", "qcom,msm-iommu-v2";
>>>> +            ranges = <0 0x01c48000 0x8000>;
>>>> +
>>>> +            clocks = <&gcc GCC_OXILI_AHB_CLK>,
>>>> +                 <&gcc GCC_BIMC_GFX_CLK>;
>>
>> And align these
> 
> They are?

Not in my email client :P, anyway..

> 
> Also any comment about the issues listed in the cover letter?

I think v2 on all smmus on this platform is right

Konrad