linux-kernel - Re: [PATCH v4 2/4] media: qcom: camss: Add support for MSM8939

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Message-ID: <67022a6de185740fa482183f29d574298048d54f.camel@mailoo.org>
Date: Fri, 13 Jun 2025 10:28:47 +0200
From: Vincent Knecht <vincent.knecht@...loo.org>
To: Bryan O'Donoghue <bryan.odonoghue@...aro.org>, Vladimir Zapolskiy	
 <vladimir.zapolskiy@...aro.org>, Robert Foss <rfoss@...nel.org>, Todor
 Tomov	 <todor.too@...il.com>, Mauro Carvalho Chehab <mchehab@...nel.org>,
 Rob Herring	 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley	 <conor+dt@...nel.org>, Bjorn Andersson
 <andersson@...nel.org>, Konrad Dybcio	 <konradybcio@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 André Apitzsch
	 <git@...tzsch.eu>, phone-devel@...r.kernel.org, 
	~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH v4 2/4] media: qcom: camss: Add support for MSM8939

Le vendredi 13 juin 2025 à 09:06 +0100, Bryan O'Donoghue a écrit :
> On 07/06/2025 22:43, Vincent Knecht wrote:
> > Le vendredi 06 juin 2025 à 13:59 +0300, Vladimir Zapolskiy a écrit :
> > > Hello Vincent.
> > > 
> > > On 6/2/25 20:27, Vincent Knecht via B4 Relay wrote:
> > > > From: Vincent Knecht <vincent.knecht@...loo.org>
> > > > 
> > > > The camera subsystem for the MSM8939 is the same as MSM8916 except with
> > > > 3 CSID instead of 2, and some higher clock rates.
> > > > 
> > > > As a quirk, this SoC needs writing values to 2 VFE VBIF registers
> > > > (see downstream msm8939-camera.dtsi vbif-{regs,settings} properties).
> > > > This fixes black stripes across sensor and garbage in CSID TPG outputs.
> > > > 
> > > > Add support for the MSM8939 camera subsystem.
> > > > 
> > > > Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> > > > Signed-off-by: Vincent Knecht <vincent.knecht@...loo.org>
> > > 
> > > There was a preceding and partially reviewed changeset published on
> > > linux-media [1] before v1 of the MSM8939 platform support in CAMSS,
> > > due to a merge conflict this platform changeset should be rebased IMHO.
> > > 
> > > [1] https://lore.kernel.org/all/20250513142353.2572563-4-vladimir.zapolskiy@linaro.org/
> > > 
> > > --
> > > Best wishes,
> > > Vladimir
> > 
> > Thank you, I'll look into it
> > 
> > 
> 
> I think I will take 8939, plus any of the other now 3 SoCs waiting to be 
> merged with RBs.
> 
> Bindings consistent with the last 10 years can go ahead. Its not 
> reasonable or in the interests of the community and developers to gate 
> any further.
> 
> ---
> bod

Hi Bryan,

I've locally made the requested changes for bindings
(ordering, vdda voltage, style, clock-lanes removal),
just not gotten around to rebase on Vladimir series.

So I can still send a new version with just these changes today.