linux-kernel - Re: [PATCH v4 2/9] soc: qcom: ubwc: add helpers to get programmable values

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Message-ID: <3e996da8-fab0-4a50-bb95-75a339b01547@oss.qualcomm.com>
Date: Mon, 26 Jan 2026 11:02:46 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Connor Abbott <cwabbott0@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov
 <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Akhil P Oommen <akhilpo@....qualcomm.com>,
        Vikash Garodia <vikash.garodia@....qualcomm.com>,
        Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>,
        Bryan O'Donoghue <bod@...nel.org>,
        Mauro Carvalho Chehab
 <mchehab@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-media@...r.kernel.org,
        Wangao Wang <wangao.wang@....qualcomm.com>
Subject: Re: [PATCH v4 2/9] soc: qcom: ubwc: add helpers to get programmable
 values

On 1/25/26 6:16 PM, Connor Abbott wrote:
> On Sun, Jan 25, 2026 at 6:37 AM Dmitry Baryshkov
> <dmitry.baryshkov@....qualcomm.com> wrote:
>>
>> Currently the database stores macrotile_mode in the data. However it
>> can be derived from the rest of the data: it should be used for UBWC
>> encoding >= 3.0 except for several corner cases (SM8150 and SC8180X).
> 
> FWIW, there is a UBWC version 3.1 not currently reflected in the code
> which adds the 8-channel macrotile mode. If we just added that and
> made SM8150 and SC8180X be 3.1 then we could derive it from the
> version.

I see 3.0 in docs for both

Konrad