linux-kernel - Re: [PATCH v2 5/6] arm64: dts: qcom: qcs8300: Add gpu and gmu nodes

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Message-ID: <f1fcf9fb-3be2-4097-a372-a76bfba6043e@oss.qualcomm.com>
Date: Wed, 30 Apr 2025 12:38:57 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Akhil P Oommen <quic_akhilpo@...cinc.com>,
        Rob Clark
 <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        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>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Jie Zhang <quic_jiezh@...cinc.com>
Subject: Re: [PATCH v2 5/6] arm64: dts: qcom: qcs8300: Add gpu and gmu nodes

On 4/29/25 2:17 PM, Dmitry Baryshkov wrote:
> On Mon, Apr 28, 2025 at 11:19:32PM +0200, Konrad Dybcio wrote:
>> On 4/28/25 12:44 PM, Akhil P Oommen wrote:
>>> On 4/14/2025 4:31 PM, Konrad Dybcio wrote:
>>>> On 2/27/25 9:07 PM, Akhil P Oommen wrote:
>>>>> From: Jie Zhang <quic_jiezh@...cinc.com>
>>>>>
>>>>> Add gpu and gmu nodes for qcs8300 chipset.
>>>>>
>>>>> Signed-off-by: Jie Zhang <quic_jiezh@...cinc.com>
>>>>> Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
>>>>> ---
>>>>
>>>> [...]
>>>>
>>>>> +		gmu: gmu@...a000 {
>>>>> +			compatible = "qcom,adreno-gmu-623.0", "qcom,adreno-gmu";
>>>>> +			reg = <0x0 0x03d6a000 0x0 0x34000>,
>>>>
>>>> size = 0x26000 so that it doesn't leak into GPU_CC
>>>
>>> We dump GPUCC regs into snapshot!
>>
>> Right, that's bad.. the dt heuristics are such that each region
>> is mapped by a single device that it belongs to, with some rare
>> exceptions..
> 
> It has been like this for most (all?) GMU / GPUCC generations.

Eeeeh fine, let's keep it here and fix it the next time (tm)

Konrad