linux-kernel - Re: [Patch v3 4/6] arm64: boot: dts: qcom: sdm45: Add support for LMh node

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Date:   Mon, 19 Jul 2021 18:44:29 -0400
From:   Thara Gopinath <thara.gopinath@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     agross@...nel.org, rui.zhang@...el.com, daniel.lezcano@...aro.org,
        viresh.kumar@...aro.org, rjw@...ysocki.net, robh+dt@...nel.org,
        tdas@...eaurora.org, mka@...omium.org,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [Patch v3 4/6] arm64: boot: dts: qcom: sdm45: Add support for LMh
 node



On 7/19/21 12:33 PM, Bjorn Andersson wrote:
> On Thu 08 Jul 07:06 CDT 2021, Thara Gopinath wrote:
> 
>> Add LMh nodes for cpu cluster0 and cpu cluster1. Also add interrupt
>> support in cpufreq node to capture the LMh interrupt and let the scheduler
>> know of the max frequency throttling.
>>
> 
> Just noticed, could you please drop "boot: " from $subject and add the
> missing '8', as you're resubmitting the series.

Sure..

Warm Regards
Thara
> 
> Regards,
> Bjorn
> 
>> Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
>> ---
>>
>> v2->v3:
>> 	- Changed the LMh low and high trip to 94500 and 95000 mC from
>> 	  74500 and 75000 mC. This was a bug that got introduced in v2.
>> v1->v2:
>> 	- Dropped dt property qcom,support-lmh as per Bjorn's review comments.
>> 	- Changed lmh compatible from generic to platform specific.
>> 	- Introduced properties specifying arm, low and high temp thresholds for LMh
>> 	  as per Daniel's suggestion.
>>
>>   arch/arm64/boot/dts/qcom/sdm845.dtsi | 26 ++++++++++++++++++++++++++
>>   1 file changed, 26 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
>> index 0a86fe71a66d..4da6b8f3dd7b 100644
>> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
>> @@ -3646,6 +3646,30 @@ swm: swm@c85 {
>>   			};
>>   		};
>>   
>> +		lmh_cluster1: lmh@...70800 {
>> +			compatible = "qcom,sdm845-lmh";
>> +			reg = <0 0x17d70800 0 0x401>;
>> +			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
>> +			qcom,lmh-cpu-id = <0x4>;
>> +			qcom,lmh-temperature-arm = <65000>;
>> +			qcom,lmh-temperature-low = <94500>;
>> +			qcom,lmh-temperature-high = <95000>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <1>;
>> +		};
>> +
>> +		lmh_cluster0: lmh@...78800 {
>> +			compatible = "qcom,sdm845-lmh";
>> +			reg = <0 0x17d78800 0 0x401>;
>> +			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
>> +			qcom,lmh-cpu-id = <0x0>;
>> +			qcom,lmh-temperature-arm = <65000>;
>> +			qcom,lmh-temperature-low = <94500>;
>> +			qcom,lmh-temperature-high = <95000>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <1>;
>> +		};
>> +
>>   		sound: sound {
>>   		};
>>   
>> @@ -4911,6 +4935,8 @@ cpufreq_hw: cpufreq@...43000 {
>>   			reg = <0 0x17d43000 0 0x1400>, <0 0x17d45800 0 0x1400>;
>>   			reg-names = "freq-domain0", "freq-domain1";
>>   
>> +			interrupts-extended = <&lmh_cluster0 0>, <&lmh_cluster1 0>;
>> +
>>   			clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GPLL0>;
>>   			clock-names = "xo", "alternate";
>>   
>> -- 
>> 2.25.1
>>