linux-kernel - Re: [PATCH v7 08/15] arm64: dts: qcom: x1e80100: Add MIPI CSI PHY nodes

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Message-ID: <ddea072c-c495-4414-a497-a2851211934e@kernel.org>
Date: Sun, 13 Jul 2025 10:28:29 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Robert Foss <rfoss@...nel.org>,
 Todor Tomov <todor.too@...il.com>, Mauro Carvalho Chehab
 <mchehab@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>,
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
 linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-media@...r.kernel.org
Subject: Re: [PATCH v7 08/15] arm64: dts: qcom: x1e80100: Add MIPI CSI PHY
 nodes

On 11/07/2025 14:58, Bryan O'Donoghue wrote:
> Add csiphy nodes for
> 
> - csiphy0
> - csiphy1
> - csiphy2
> - csiphy4
> 
> The irregular naming of the PHYs comes directly from the hardware which for
> whatever reason skipped csiphy3.
> 
> Separating the nodes from CAMSS as we have done with the sensor I2C bus aka
> the CCI interface is justified since the CSIPHYs have their own pinouts and
> voltage rails.
> 
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/x1e80100.dtsi | 88 ++++++++++++++++++++++++++++++++++
>  1 file changed, 88 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
> index 41245e8592f78edf141141f2f5b7c5b841318f46..e385d6f329616360e089ba352be450c9eca6aab6 100644
> --- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi
> +++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
> @@ -5244,6 +5244,94 @@ cci1_i2c1: i2c-bus@1 {
>  			};
>  		};
>  
> +		csiphy0: csiphy@...4000 {

phy@

git grep csi.*phy@
git grep phy@

> +			compatible = "qcom,x1e80100-mipi-csi2-combo-phy";

You should clearly express where the bindings are. I see only short
remark about some driver in v7 changelog, but you have here a weak
dependency, because this should not be accepted before the bindings
reach their maintainer and qcom maintainers need to be able to check on
that.


Best regards,
Krzysztof