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

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Date:   Fri, 7 Apr 2023 10:23:11 +0530
From:   Devi Priya <quic_devipriy@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>, <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 4/7/2023 1:21 AM, Konrad Dybcio wrote:
> 
> 
> 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')
>
Yes, But I see that opp-table-cpu node is already placed after
memory@...00000
> 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";
Best Regards,
Devi Priya