linux-kernel - [Patch v2 4/5] arm64: boot: dts: qcom: sdm45: Add support for LMh node

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Message-Id: <20210624115813.3613290-5-thara.gopinath@linaro.org>
Date:   Thu, 24 Jun 2021 07:58:12 -0400
From:   Thara Gopinath <thara.gopinath@...aro.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org, rui.zhang@...el.com,
        daniel.lezcano@...aro.org, viresh.kumar@...aro.org,
        rjw@...ysocki.net, robh+dt@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: [Patch v2 4/5] arm64: boot: dts: qcom: sdm45: Add support for LMh node

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.

Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
---

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..202fec09becd 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 = <74500>;
+			qcom,lmh-temperature-high = <75000>;
+			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 = <74500>;
+			qcom,lmh-temperature-high = <75000>;
+			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