linux-kernel - Re: [PATCH v2 1/4] arm64: dts: qcom: ipq6018: add 1.2GHz CPU Frequency

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Message-ID: <21a53796-c4d4-44d0-b62b-52d327784a90@linaro.org>
Date: Wed, 6 Mar 2024 17:20:11 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Chukun Pan <amadeus@....edu.cn>, Bjorn Andersson <andersson@...nel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.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 v2 1/4] arm64: dts: qcom: ipq6018: add 1.2GHz CPU
 Frequency



On 3/6/24 15:03, Chukun Pan wrote:
> Some IPQ6000 SoCs have CPU frequencies up to 1.2GHz,

(which ones specifically?)

Konrad
> so add this frequency.
> 
> 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 4e29adea570a..7fdb119083a2 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>;
> +		};

Looks like said SoC can *only* run the CPUs at 1.2 GHz?

Konrad