linux-kernel - Re: [PATCH V3 5/5] arm64: dts: qcom: ipq9574: Add cpufreq support

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Message-ID: <18eb5708-bf51-26c3-51a0-70a5069ffdbe@linaro.org>
Date:   Thu, 6 Apr 2023 21:51:08 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Devi Priya <quic_devipriy@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, lgirdwood@...il.com, broonie@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     quic_srichara@...cinc.com, quic_sjaganat@...cinc.com,
        quic_kathirav@...cinc.com, quic_arajkuma@...cinc.com,
        quic_anusha@...cinc.com, quic_ipkumar@...cinc.com
Subject: Re: [PATCH V3 5/5] arm64: dts: qcom: ipq9574: Add cpufreq support



On 6.04.2023 09:00, Devi Priya wrote:
> Add cpu freq nodes in the device tree to bump cpu frequency above 800MHz.
> 
> Co-developed-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
> Signed-off-by: Devi Priya <quic_devipriy@...cinc.com>
> ---
>  Changes in V3:
> 	- No change
> 
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi | 58 +++++++++++++++++++++++++++
>  1 file changed, 58 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> index 1f9b7529e7ed..cfef87b5fd22 100644
> --- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> @@ -6,6 +6,7 @@
>   * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
>   */
>  
> +#include <dt-bindings/clock/qcom,apss-ipq.h>
>  #include <dt-bindings/clock/qcom,ipq9574-gcc.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>  #include <dt-bindings/reset/qcom,ipq9574-gcc.h>
> @@ -37,6 +38,10 @@
>  			reg = <0x0>;
>  			enable-method = "psci";
>  			next-level-cache = <&L2_0>;
> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> +			clock-names = "cpu";
> +			operating-points-v2 = <&cpu_opp_table>;
> +			cpu-supply = <&ipq9574_s1>;
>  		};
>  
>  		CPU1: cpu@1 {
> @@ -45,6 +50,10 @@
>  			reg = <0x1>;
>  			enable-method = "psci";
>  			next-level-cache = <&L2_0>;
> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> +			clock-names = "cpu";
> +			operating-points-v2 = <&cpu_opp_table>;
> +			cpu-supply = <&ipq9574_s1>;
>  		};
>  
>  		CPU2: cpu@2 {
> @@ -53,6 +62,10 @@
>  			reg = <0x2>;
>  			enable-method = "psci";
>  			next-level-cache = <&L2_0>;
> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> +			clock-names = "cpu";
> +			operating-points-v2 = <&cpu_opp_table>;
> +			cpu-supply = <&ipq9574_s1>;
>  		};
>  
>  		CPU3: cpu@3 {
> @@ -61,6 +74,10 @@
>  			reg = <0x3>;
>  			enable-method = "psci";
>  			next-level-cache = <&L2_0>;
> +			clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>;
> +			clock-names = "cpu";
> +			operating-points-v2 = <&cpu_opp_table>;
> +			cpu-supply = <&ipq9574_s1>;
>  		};
>  
>  		L2_0: l2-cache {
> @@ -75,6 +92,47 @@
>  		reg = <0x0 0x40000000 0x0 0x0>;
>  	};
>  
> +	cpu_opp_table: opp-table-cpu {
This is not sorted properly. It should probably come
after memory alphabetically ('o' > 'm')

Konrad
> +		compatible = "operating-points-v2";
> +		opp-shared;
> +
> +		opp-936000000 {
> +			opp-hz = /bits/ 64 <936000000>;
> +			opp-microvolt = <725000>;
> +			clock-latency-ns = <200000>;
> +		};
> +
> +		opp-1104000000 {
> +			opp-hz = /bits/ 64 <1104000000>;
> +			opp-microvolt = <787500>;
> +			clock-latency-ns = <200000>;
> +		};
> +
> +		opp-1416000000 {
> +			opp-hz = /bits/ 64 <1416000000>;
> +			opp-microvolt = <862500>;
> +			clock-latency-ns = <200000>;
> +		};
> +
> +		opp-1488000000 {
> +			opp-hz = /bits/ 64 <1488000000>;
> +			opp-microvolt = <925000>;
> +			clock-latency-ns = <200000>;
> +		};
> +
> +		opp-1800000000 {
> +			opp-hz = /bits/ 64 <1800000000>;
> +			opp-microvolt = <987500>;
> +			clock-latency-ns = <200000>;
> +		};
> +
> +		opp-2208000000 {
> +			opp-hz = /bits/ 64 <2208000000>;
> +			opp-microvolt = <1062500>;
> +			clock-latency-ns = <200000>;
> +		};
> +	};
> +
>  	firmware {
>  		scm {
>  			compatible = "qcom,scm-ipq9574", "qcom,scm";