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Message-ID: <95db5a14-87dc-4f08-b8e2-52bce140354d@linaro.org>
Date:   Sat, 26 Aug 2023 14:04:56 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bryan O'Donoghue <bryan.odonoghue@...aro.org>, rfoss@...nel.org,
        todor.too@...il.com, agross@...nel.org, andersson@...nel.org,
        mchehab@...nel.org, hverkuil-cisco@...all.nl,
        laurent.pinchart@...asonboard.com, sakari.ailus@...ux.intel.com,
        andrey.konovalov@...aro.org
Cc:     linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 07/15] media: qcom: camss: Capture VFE CSID dependency
 in a helper function

On 26.08.2023 14:01, Bryan O'Donoghue wrote:
> On 26/08/2023 11:02, Konrad Dybcio wrote:
>> On 23.08.2023 12:44, Bryan O'Donoghue wrote:
>>>  From sdm845 onwards we need to ensure the VFE is powered on prior to
>>> switching on the CSID.
>> And what's the symptom if we fail to ensure this? How can someone
>> adding support for another platform tell whether the match-list
>> should be expanded?
> 
> That person has to understand the dependency.
If we need this workaround, there surely must be something that doesn't
work without it, a measurable symptom. What is it?

Konrad

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