linux-kernel - Re: [PATCH v8 5/7] arm64: dts: qcom: Add initial support for MSM8937

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Message-ID: <EA8D417C-9B17-4AA0-A448-316F8904AF90@mainlining.org>
Date: Wed, 03 Sep 2025 12:47:51 +0200
From: Barnabás Czémán <barnabas.czeman@...nlining.org>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 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>,
 Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
 Robin Murphy <robin.murphy@....com>, Konrad Dybcio <konradybcio@...nel.org>,
 Sean Paul <sean@...rly.run>, 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>,
 Dmitry Baryshkov <lumag@...nel.org>,
 Rob Clark <robin.clark@....qualcomm.com>,
 Abhinav Kumar <abhinav.kumar@...ux.dev>,
 Jessica Zhang <jessica.zhang@....qualcomm.com>,
 Robert Marko <robimarko@...il.com>, Das Srinagesh <quic_gurus@...cinc.com>,
 Srinivas Kandagatla <srini@...nel.org>
CC: 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,
 dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
 phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
 linux@...nlining.org, Dang Huynh <danct12@...eup.net>
Subject: Re: [PATCH v8 5/7] arm64: dts: qcom: Add initial support for MSM8937



On 3 September 2025 12:42:38 CEST, Konrad Dybcio <konrad.dybcio@....qualcomm.com> wrote:
>On 8/31/25 2:29 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>
>> ---
>
>[...]
>
>> +		qfprom: qfprom@...00 {
>> +			compatible = "qcom,msm8937-qfprom", "qcom,qfprom";
>> +			reg = <0x000a4000 0x1000>;
>
>here you reserve 0x1000 for the qfprom
>
>[...]
>
>> +			gpu_speed_bin: gpu-speed-bin@...b {
>> +				reg = <0x601b 0x1>;
>
>and here you make way for OOB accesses
Ack
>
>Make qfprom length 0x3000 with the current base and the gpu
>speed bin should be at base+0x201b, I *think* (the docs aren't
>super clear on that)
>
>[...]
>
>> +		mdss: display-subsystem@...0000 {
>> +			compatible = "qcom,mdss";
>> +			reg = <0x01a00000 0x1000>,
>> +			      <0x01ab0000 0x1040>;
>
>In v5, I pointed out the size of vbif should be 0x3000.. and the random
Where 0x3000 is come from downstream is using 0x1040 for vbif.
>newline below wcss-wlan2-pins {} is still there too
>
>Konrad