linux-kernel - Re: [PATCH v3 5/6] arm64: dts: qcom: sm6150: Add gpu and rgmu nodes

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Message-ID: <9141e67d-2837-4e73-bd3a-9a9c5b8f72f9@oss.qualcomm.com>
Date: Thu, 4 Dec 2025 14:31:44 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Akhil P Oommen <akhilpo@....qualcomm.com>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Rob Clark <robin.clark@....qualcomm.com>, Sean Paul <sean@...rly.run>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        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>,
        Jessica Zhang <jesszhan0024@...il.com>,
        Dan Carpenter <dan.carpenter@...aro.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 v3 5/6] arm64: dts: qcom: sm6150: Add gpu and rgmu nodes

On 12/4/25 11:13 AM, Akhil P Oommen wrote:
> On 11/26/2025 6:12 AM, Dmitry Baryshkov wrote:
>> On Sat, Nov 22, 2025 at 03:03:10PM +0100, Konrad Dybcio wrote:
>>> On 11/21/25 10:52 PM, Akhil P Oommen wrote:
>>>> From: Jie Zhang <quic_jiezh@...cinc.com>
>>>>
>>>> Add gpu and rgmu nodes for qcs615 chipset.
>>>>
>>>> Signed-off-by: Jie Zhang <quic_jiezh@...cinc.com>
>>>> Signed-off-by: Akhil P Oommen <akhilpo@....qualcomm.com>
>>>> ---
>>>
>>> [...]
>>>
>>>> +			gpu_opp_table: opp-table {
>>>> +				compatible = "operating-points-v2";
>>>> +
>>>> +				opp-845000000 {
>>>> +					opp-hz = /bits/ 64 <845000000>;
>>>> +					required-opps = <&rpmhpd_opp_turbo>;
>>>> +					opp-peak-kBps = <7050000>;
>>>> +				};
>>>
>>> I see another speed of 895 @ turbo_l1, perhaps that's for speedbins
>>> or mobile parts specifically?
>>
>> msm-4.14 defines 7 speedbins for SM6150. Akhil, I don't see any of them
>> here.
> 
> The IoT/Auto variants have a different frequency plan compared to the
> mobile variant. I reviewed the downstream code and this aligns with that
> except the 290Mhz corner. We can remove that one.
> 
> Here we are describing the IoT variant of Talos. So we can ignore the
> speedbins from the mobile variant until that is supported.

Writing this reply took probably only slightly less time than fixing
the issue.. I really see no point in kicking the can down the road

Konrad