linux-kernel - Re: [PATCH v3 2/2] media: dt-bindings: Update camss VDDA PHY supply description

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Message-ID: <20251218-amigurumi-adder-of-snow-76e343@quoll>
Date: Thu, 18 Dec 2025 09:10:09 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: David Heidelberg <david@...t.cz>
Cc: Robert Foss <rfoss@...nel.org>, Todor Tomov <todor.too@...il.com>, 
	Bryan O'Donoghue <bryan.odonoghue@...aro.org>, Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>, 
	Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Vikram Sharma <quic_vikramsa@...cinc.com>, Kapatrala Syed <akapatra@...cinc.com>, 
	Hariram Purushothaman <hariramp@...cinc.com>, Richard Acayan <mailingradian@...il.com>, 
	Bryan O'Donoghue <bod@...nel.org>, Hans Verkuil <hverkuil@...nel.org>, 
	Depeng Shao <quic_depengs@...cinc.com>, linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] media: dt-bindings: Update camss VDDA PHY supply
 description

On Tue, Dec 16, 2025 at 01:24:51PM +0100, David Heidelberg wrote:
> Usually, the supply is around 0.875 - 0.88 V. Include the information
> same as is already done for more recent camss dt-bindings.
> 
> Signed-off-by: David Heidelberg <david@...t.cz>
> ---
>  Documentation/devicetree/bindings/media/qcom,sa8775p-camss.yaml  | 2 +-
>  Documentation/devicetree/bindings/media/qcom,sc7280-camss.yaml   | 2 +-
>  Documentation/devicetree/bindings/media/qcom,sc8280xp-camss.yaml | 2 +-
>  Documentation/devicetree/bindings/media/qcom,sdm670-camss.yaml   | 2 +-
>  Documentation/devicetree/bindings/media/qcom,sdm845-camss.yaml   | 2 +-
>  Documentation/devicetree/bindings/media/qcom,sm8250-camss.yaml   | 2 +-
>  Documentation/devicetree/bindings/media/qcom,sm8550-camss.yaml   | 2 +-
>  7 files changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/qcom,sa8775p-camss.yaml b/Documentation/devicetree/bindings/media/qcom,sa8775p-camss.yaml
> index 4986d18d1a2da..5c47a2cf220fb 100644
> --- a/Documentation/devicetree/bindings/media/qcom,sa8775p-camss.yaml
> +++ b/Documentation/devicetree/bindings/media/qcom,sa8775p-camss.yaml
> @@ -126,7 +126,7 @@ properties:
>  
>    vdda-phy-supply:
>      description:
> -      Phandle to a regulator supply to PHY core block.
> +      0.88V regulator supply to CSIPHY IP blocks.

As I said, this is just a supply, not a "regulator supply". I gave you
justification for this. This is completely unimportant but I just wonder
why even that direct instruction has to be ignored.

Best regards,
Krzysztof