linux-kernel - Re: [PATCH 4/4] ARM: dts: qcom: msm8974: Add device tree for Samsung Galaxy S5 China

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Date: Mon, 22 Jan 2024 16:17:57 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Rong Zhang <i@...g.moe>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Icenowy Zheng <uwu@...nowy.me>
Subject: Re: [PATCH 4/4] ARM: dts: qcom: msm8974: Add device tree for Samsung
 Galaxy S5 China

On 22/01/2024 15:51, Rong Zhang wrote:
> I've glanced similar dts. To solve this, I think we could either:
> 1. keep the dt-binding in [PATCH 3/4], and delete "samsung,klte" here
> 2. rewrite dt-binding like crystalfontz,cfa100{36,37,49,55,56,57,58}:
> 
> diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
> index 2bd29a2399ad..4979ccae2b64 100644
> --- a/Documentation/devicetree/bindings/arm/qcom.yaml
> +++ b/Documentation/devicetree/bindings/arm/qcom.yaml
> @@ -223,11 +223,17 @@ properties:
>                - fairphone,fp2
>                - oneplus,bacon
>                - samsung,klte
> -              - samsung,kltechn
>                - sony,xperia-castor
>            - const: qcom,msm8974pro
>            - const: qcom,msm8974
>  
> +      - items:
> +          - enum:
> +              - samsung,kltechn
> +          - const: samsung,klte
> +          - const: qcom,msm8974pro
> +          - const: qcom,msm8974
> +
>        - items:
>            - const: qcom,msm8916-mtp
>            - const: qcom,msm8916-mtp/1
> 
> My preference is (2.) since other variants of klte may be added in the
> future. I would like to hear your preferences.

It depends whether the devices are compatible. IOW, entire klte DTB
should work fine on kltechn, just without few new devices.

Best regards,
Krzysztof