linux-kernel - Re: [PATCH v3 1/4] arm64: dts: qcom: ipq6018: add 1.2GHz CPU Frequency

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Message-ID: <f3g2tvddqyt5vjt6x7h6oirtm2ighnesu2pmtn2br6jpbxf5zr@tprelogpljuh>
Date: Thu, 29 Aug 2024 08:56:09 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Chukun Pan <amadeus@....edu.cn>
Cc: Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konradybcio@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Rob Herring <robh@...nel.org>, linux-arm-msm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 1/4] arm64: dts: qcom: ipq6018: add 1.2GHz CPU
 Frequency

On Wed, Aug 21, 2024 at 06:10:22PM GMT, Chukun Pan wrote:
> Some IPQ6000 SoCs (fused)[1] have CPU frequencies up to 1.2GHz,
> so add this frequency.

opp-supported-hw is selected for all IPQ6000. Please add more details
here. Is 1.2 GHz really to be enabled for all IPQ6000?

> 
> [1] Usually the SBL version is BOOT.XF.0.3-00086-IPQ60xxLZB-1
> 
> Signed-off-by: Chukun Pan <amadeus@....edu.cn>
> ---
>  arch/arm64/boot/dts/qcom/ipq6018.dtsi | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq6018.dtsi b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
> index 8edd535a188f..1b584d9aadd1 100644
> --- a/arch/arm64/boot/dts/qcom/ipq6018.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
> @@ -119,6 +119,13 @@ opp-1056000000 {
>  			clock-latency-ns = <200000>;
>  		};
>  
> +		opp-1200000000 {
> +			opp-hz = /bits/ 64 <1200000000>;
> +			opp-microvolt = <850000>;
> +			opp-supported-hw = <0x4>;
> +			clock-latency-ns = <200000>;
> +		};
> +
>  		opp-1320000000 {
>  			opp-hz = /bits/ 64 <1320000000>;
>  			opp-microvolt = <862500>;
> -- 
> 2.25.1
> 

-- 
With best wishes
Dmitry