linux-kernel - Re: [PATCH v4 3/6] arm64: dts: qcom: sa8775p: Add gpu and gmu nodes

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Message-ID: <f169be5a-faa5-4824-861e-27bd2083b9cf@oss.qualcomm.com>
Date: Wed, 3 Sep 2025 15:36:34 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Akhil P Oommen <akhilpo@....qualcomm.com>, Sean Paul <sean@...rly.run>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Connor Abbott <cwabbott0@...il.com>,
        Srinivas Kandagatla <srini@...nel.org>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov
 <lumag@...nel.org>,
        Gaurav Kohli <quic_gkohli@...cinc.com>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Puranam V G Tejaswi <quic_pvgtejas@...cinc.com>
Subject: Re: [PATCH v4 3/6] arm64: dts: qcom: sa8775p: Add gpu and gmu nodes

On 9/3/25 2:39 PM, Dmitry Baryshkov wrote:
> On Wed, Sep 03, 2025 at 02:26:30PM +0200, Konrad Dybcio wrote:
>> On 8/21/25 8:55 PM, Akhil P Oommen wrote:
>>> From: Puranam V G Tejaswi <quic_pvgtejas@...cinc.com>
>>>
>>> Add gpu and gmu nodes for sa8775p chipset. As of now all
>>> SKUs have the same GPU fmax, so there is no requirement of
>>> speed bin support.
>>>
>>> Signed-off-by: Puranam V G Tejaswi <quic_pvgtejas@...cinc.com>
>>> Signed-off-by: Akhil P Oommen <akhilpo@....qualcomm.com>
>>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>>> ---
>>>  arch/arm64/boot/dts/qcom/lemans.dtsi | 116 +++++++++++++++++++++++++++++++++++
>>>  1 file changed, 116 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/lemans.dtsi b/arch/arm64/boot/dts/qcom/lemans.dtsi
>>> index 8ceb59742a9fc6562b2c38731ddabe3a549f7f35..8eac8d4719db9230105ad93ac22287850b6b007c 100644
>>> --- a/arch/arm64/boot/dts/qcom/lemans.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/lemans.dtsi
>>> @@ -1097,6 +1097,18 @@ ipcc: mailbox@...000 {
>>>  			#mbox-cells = <2>;
>>>  		};
>>>  
>>> +		qfprom: efuse@...000 {
>>> +			compatible = "qcom,sa8775p-qfprom", "qcom,qfprom";
>>> +			reg = <0x0 0x00784000 0x0 0x2410>;
>>
>> len = 0x3000
>>
>> [...]
>>
>>> +		gmu: gmu@...a000 {
>>> +			compatible = "qcom,adreno-gmu-663.0", "qcom,adreno-gmu";
>>> +			reg = <0x0 0x03d6a000 0x0 0x34000>,
>>
>> This bleeds into GPU_CC, len should be 0x26000
> 
> gpucc is in the middle of GMU, see other platforms.

This is not the case here

Konrad