linux-kernel - Re: [RFT RFC PATCH] arm64: dts: qcom: sdm630-nile: correct duplicated reserved memory node

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Date:   Sat, 22 Apr 2023 14:06:01 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFT RFC PATCH] arm64: dts: qcom: sdm630-nile: correct duplicated
 reserved memory node



On 19.04.2023 23:19, Krzysztof Kozlowski wrote:
> SoC DTSI already comes with 85800000 reserved memory node, so assume the
> author wanted to update its length.  This fixes dtbs W=1 warning:
> 
>   Warning (unique_unit_address_if_enabled): /reserved-memory/qhee-code@...00000: duplicate unit-address (also used in node /reserved-memory/reserved@...00000)
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> 
> ---
> 
> What was the original code intention?
Hm, perhaps the original introduction had the common definition
wrong.. I see a downstream sdm630.dtsi and sdm660.dtsi having
the qhee_code sized at 0x37...

I'm fine with either resolution, I think..

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
>  arch/arm64/boot/dts/qcom/sdm630-sony-xperia-nile.dtsi | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm630-sony-xperia-nile.dtsi b/arch/arm64/boot/dts/qcom/sdm630-sony-xperia-nile.dtsi
> index 2ca713a3902a..3033723fc6ff 100644
> --- a/arch/arm64/boot/dts/qcom/sdm630-sony-xperia-nile.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm630-sony-xperia-nile.dtsi
> @@ -138,11 +138,6 @@ debug@...00000 {
>  			no-map;
>  		};
>  
> -		reserved@...00000 {
> -			reg = <0x00 0x85800000 0x00 0x3700000>;
> -			no-map;
> -		};
> -
>  		cont_splash_mem: splash@...00000 {
>  			reg = <0 0x9d400000 0 (1920 * 1080 * 4)>;
>  			no-map;
> @@ -256,6 +251,10 @@ &pon_resin {
>  	linux,code = <KEY_VOLUMEUP>;
>  };
>  
> +&qhee_code {
> +	reg = <0x00 0x85800000 0x00 0x3700000>;
> +};
> +
>  &qusb2phy0 {
>  	status = "okay";
>