linux-kernel - Re: [PATCH 08/10] arm64: dts: qcom: Add initial support for MSM8937

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Message-ID: <752a6234-cf74-48f5-8836-343011b6eeaa@oss.qualcomm.com>
Date: Fri, 21 Feb 2025 22:33:52 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: barnabas.czeman@...nlining.org,
        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
 <conor+dt@...nel.org>,
        Stephan Gerhold <stephan@...hold.net>,
        Otto Pflüger <otto.pflueger@...cue.de>,
        Linus Walleij <linus.walleij@...aro.org>, Lee Jones <lee@...nel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Konrad Dybcio <konradybcio@...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,
        iommu@...ts.linux.dev, Dang Huynh <danct12@...eup.net>
Subject: Re: [PATCH 08/10] arm64: dts: qcom: Add initial support for MSM8937

On 12.02.2025 5:20 PM, barnabas.czeman@...nlining.org wrote:
> On 2025-02-12 14:07, Konrad Dybcio wrote:
>> On 11.02.2025 11:37 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>
>>> ---
>>
>> So the computer tells me 8917 and 8937 are *very* similar. Have you
>> tried assessing how making 8937.dtsi an overlay atop 8917.dtsi would
>> work out?
> 
> They are similar but there are many small differences:
> - have two dsi
> - using adreno 505
> - different iommu it uses arm,smmu for gpu and qcom,iommu for applications
> - 8 cores
> - camss will be a different a bit
> - venus will be different a bit
> - have more i2c and spi
> - different mdp version
> 
> Maybe i can find more differences, originally it was based on msm8917.dtsi
> but we have decided to keep it separate, also it have different license from 8917.
> The plan is MSM8940 and SDM439 support will based on msm8937.dtsi in the future.

Alright, makes sense to keep them separate then

Konrad