Re: [RFC PATCH 6/6] arm64: dts: qcom: sc7180: Add SoC specific compatible to soc node

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On Tue, Jan 07, 2025 at 05:28:43PM -0800, Stephen Boyd wrote:
> Allow an SoC driver to probe for these devices. Add the SoC specific
> compatible to the soc node. Leave the original simple-bus compatible in
> place so that everything keeps working.
> 
> Cc: Rob Herring <robh@xxxxxxxxxx>
> Cc: Bjorn Andersson <andersson@xxxxxxxxxx>
> Cc: Konrad Dybcio <konradybcio@xxxxxxxxxx>
> Cc: <linux-arm-msm@xxxxxxxxxxxxxxx>
> Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/sc7180.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index 76fe314d2ad5..257890a193e6 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -782,7 +782,7 @@ soc: soc@0 {
>  		#size-cells = <2>;
>  		ranges = <0 0 0 0 0x10 0>;
>  		dma-ranges = <0 0 0 0 0x10 0>;
> -		compatible = "simple-bus";
> +		compatible = "qcom,soc-sc7180", "simple-bus";

If the new driver requires this compatible, it will break compatibility
with older DT files (and it should be avoided).

>  
>  		gcc: clock-controller@100000 {
>  			compatible = "qcom,gcc-sc7180";
> -- 
> https://chromeos.dev
> 

-- 
With best wishes
Dmitry




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