linux-kernel - Re: [PATCH v5 3/5] arm64: dts: qcom: Add initial support for MSM8937

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Message-ID: <5ccb39f9393b44761127717096a38a46@mainlining.org>
Date: Fri, 25 Apr 2025 17:13:45 +0200
From: barnabas.czeman@...nlining.org
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>, Michael Turquette
 <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
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 <joro@...tes.org>, Will Deacon <will@...nel.org>, Robin Murphy
 <robin.murphy@....com>, Konrad Dybcio <konradybcio@...nel.org>, Rob Clark
 <robdclark@...il.com>, Sean Paul <sean@...rly.run>, Abhinav Kumar
 <quic_abhinavk@...cinc.com>, Marijn Suijten <marijn.suijten@...ainline.org>,
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 Sireesh Kodali <sireeshkodali@...tonmail.com>, Srinivas Kandagatla
 <srini@...nel.org>, linux-arm-msm@...r.kernel.org,
 linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
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 ~postmarketos/upstreaming@...ts.sr.ht, linux@...nlining.org, Dang Huynh
 <danct12@...eup.net>
Subject: Re: [PATCH v5 3/5] arm64: dts: qcom: Add initial support for MSM8937

On 2025-04-25 11:57, Konrad Dybcio wrote:
> On 4/23/25 4:46 PM, barnabas.czeman@...nlining.org wrote:
>> On 2025-04-23 16:03, Konrad Dybcio wrote:
>>> On 4/21/25 10:18 PM, Barnabás Czémán wrote:
>>>> From: Dang Huynh <danct12@...eup.net>
>>>> 
>>>> Add initial support for MSM8937 SoC.
>>>> 
>>>> Signed-off-by: Dang Huynh <danct12@...eup.net>
>>>> Co-developed-by: Barnabás Czémán <barnabas.czeman@...nlining.org>
>>>> Signed-off-by: Barnabás Czémán <barnabas.czeman@...nlining.org>
>>>> ---
> 
> [...]
> 
>>>> +            gpu_opp_table: opp-table {
>>>> +                compatible = "operating-points-v2";
>>>> +
>>>> +                opp-19200000 {
>>>> +                    opp-hz = /bits/ 64 <19200000>;
>>>> +                    opp-supported-hw = <0xff>;
>>> 
>>> The comment from the previous revision still stands
>> If i remove opp-supported-hw i will got -22 EINVAL messages and the 
>> opp will be not fine.
> 
> Right, I have a series pending to improve this situation a bit..
> 
> In the meantime, you should be able to define the nvmem cell and
> fill in meaningful values for this platform
As I wrote in the previous revision there is no nvmem for GPU on msm8937 
only on msm8940.
> 
> Konrad