linux-kernel - Re: [PATCH v6 1/5] media: dt-bindings: Add CAMSS device for Kaanapali

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Message-ID: <fa8ddb59-079a-41c8-b75d-c7a9d40e7da3@linaro.org>
Date: Wed, 19 Nov 2025 09:21:11 +0000
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Vijay Kumar Tumati <vijay.tumati@....qualcomm.com>,
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 Hangxiang Ma <hangxiang.ma@....qualcomm.com>,
 Loic Poulain <loic.poulain@....qualcomm.com>, Robert Foss
 <rfoss@...nel.org>, Andi Shyti <andi.shyti@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Todor Tomov <todor.too@...il.com>,
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
 aiqun.yu@....qualcomm.com, tingwei.zhang@....qualcomm.com,
 trilok.soni@....qualcomm.com, yijie.yang@....qualcomm.com,
 Jingyi Wang <jingyi.wang@....qualcomm.com>,
 Atiya Kailany <atiya.kailany@....qualcomm.com>
Subject: Re: [PATCH v6 1/5] media: dt-bindings: Add CAMSS device for Kaanapali

On 18/11/2025 21:45, Vijay Kumar Tumati wrote:
>>> Hi Bryan, HLOS does not have access to those registers. They are 
>>> configured by the Hyp.
>> If that's hyp, please add them. We already have platforms without
>> Gunyah. Remember, bindings are defined once and for good and I wouldn't
>> call it impossible that someone would want to run that configuration on
>> Kaanapali some day
>>
>> Konrad
> 
> Sure, if that's the standard. But even on systems without Gunyah (say, 
> KVM/PKVM), these will not be configured from HLOS in the regular flow. 
> It will be done from TZ.

By the bootloader/s or by runtime TZ app ?

---
bod