linux-kernel - Re: [PATCH v2 2/4] media: dt-bindings: qcom,sc7280-venus: drop non-PAS support

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Message-ID: <721580cd-b493-479f-bd1c-6fd96df1d46d@oss.qualcomm.com>
Date: Tue, 27 Jan 2026 12:40:18 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Vikash Garodia <vikash.garodia@....qualcomm.com>,
        Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Bryan O'Donoghue <bod@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        cros-qcom-dts-watchers@...omium.org,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 2/4] media: dt-bindings: qcom,sc7280-venus: drop
 non-PAS support

On 1/26/26 3:09 AM, Dmitry Baryshkov wrote:
> The only users of the non-PAS setup on SC7280 platform are the ChromeOS
> devices, which were cancelled before reaching end users. Iris, the
> alternative driver for the same hardware, does not support non-PAS
> setup. It is expected that in future both Venus and Iris devices will
> use different ABI for non-PAS (EL2) setup.
> 
> In order to declare only the future-proof hardware description drop
> support for non-PAS setup from the SC7280 Venus schema (breaking almost
> non-existing SC7280 ChromeOS devices).
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---

The commit message could highlight the *actual* problem ("iommus"
entries aren't treated like separate entities which is exactly what
we need to avoid for this complex hw)

Konrad