linux-kernel - Re: [PATCH] arm64: dts: qcom: sc8280xp: Add lost ranges for timer

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Message-ID: <20220709065915.GG5063@thinkpad>
Date:   Sat, 9 Jul 2022 12:29:15 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Johan Hovold <johan+linaro@...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: [PATCH] arm64: dts: qcom: sc8280xp: Add lost ranges for timer

On Thu, Jul 07, 2022 at 09:08:58AM -0700, Bjorn Andersson wrote:
> The timer node needs ranges specified to map the 1-cell children to the
> 2-cell address range used in /soc. This addition never made it into the
> patch that was posted and merged, so add it now.
> 
> Fixes: 152d1faf1e2f ("arm64: dts: qcom: add SC8280XP platform")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> index 2bdb42c88311..37a4cd6f85b6 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> @@ -1667,6 +1667,7 @@ timer@...20000 {
>  			reg = <0x0 0x17c20000 0x0 0x1000>;
>  			#address-cells = <1>;
>  			#size-cells = <1>;
> +			ranges = <0 0 0 0x20000000>;

Even though this looks correct, I'm wondering why other SoCs are defining the
child addresses in 2 cells. I don't think the timer frames can go beyond 32bit
address space. Should we fix them too?

But for this patch,

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

Thanks,
Mani

>  
>  			frame@...21000 {
>  				frame-number = <0>;
> -- 
> 2.35.1
> 

-- 
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