linux-kernel - [PATCH] arm64: dts: mt8183: Enable CPU idle-states

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Message-ID: <1559118303-31875-1-git-send-email-jamesjj.liao@mediatek.com>
Date:   Wed, 29 May 2019 16:25:03 +0800
From:   James Liao <jamesjj.liao@...iatek.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>
CC:     <devicetree@...r.kernel.org>, <srv_heupstream@...iatek.com>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        James Liao <jamesjj.liao@...iatek.com>
Subject: [PATCH] arm64: dts: mt8183: Enable CPU idle-states

Enable mcdi-cpu and mcdi-cluster on MT8183 CPUs.

Signed-off-by: James Liao <jamesjj.liao@...iatek.com>
---
This patch bases on v5.1-rc1 and [1], adds idle-states for MT8183 CPUs.

[1] https://patchwork.kernel.org/patch/10962375/

 arch/arm64/boot/dts/mediatek/mt8183.dtsi | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index 08274bf..ef4b054 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -56,6 +56,7 @@
 			compatible = "arm,cortex-a53";
 			reg = <0x000>;
 			enable-method = "psci";
+			cpu-idle-states = <&MCDI_CPU &MCDI_CLUSTER>;
 		};
 
 		cpu1: cpu@1 {
@@ -63,6 +64,7 @@
 			compatible = "arm,cortex-a53";
 			reg = <0x001>;
 			enable-method = "psci";
+			cpu-idle-states = <&MCDI_CPU &MCDI_CLUSTER>;
 		};
 
 		cpu2: cpu@2 {
@@ -70,6 +72,7 @@
 			compatible = "arm,cortex-a53";
 			reg = <0x002>;
 			enable-method = "psci";
+			cpu-idle-states = <&MCDI_CPU &MCDI_CLUSTER>;
 		};
 
 		cpu3: cpu@3 {
@@ -77,6 +80,7 @@
 			compatible = "arm,cortex-a53";
 			reg = <0x003>;
 			enable-method = "psci";
+			cpu-idle-states = <&MCDI_CPU &MCDI_CLUSTER>;
 		};
 
 		cpu4: cpu@100 {
@@ -84,6 +88,7 @@
 			compatible = "arm,cortex-a73";
 			reg = <0x100>;
 			enable-method = "psci";
+			cpu-idle-states = <&MCDI_CPU &MCDI_CLUSTER>;
 		};
 
 		cpu5: cpu@101 {
@@ -91,6 +96,7 @@
 			compatible = "arm,cortex-a73";
 			reg = <0x101>;
 			enable-method = "psci";
+			cpu-idle-states = <&MCDI_CPU &MCDI_CLUSTER>;
 		};
 
 		cpu6: cpu@102 {
@@ -98,6 +104,7 @@
 			compatible = "arm,cortex-a73";
 			reg = <0x102>;
 			enable-method = "psci";
+			cpu-idle-states = <&MCDI_CPU &MCDI_CLUSTER>;
 		};
 
 		cpu7: cpu@103 {
@@ -105,6 +112,29 @@
 			compatible = "arm,cortex-a73";
 			reg = <0x103>;
 			enable-method = "psci";
+			cpu-idle-states = <&MCDI_CPU &MCDI_CLUSTER>;
+		};
+
+		idle-states {
+			entry-method = "arm,psci";
+
+			MCDI_CPU: mcdi-cpu {
+				compatible = "arm,idle-state";
+				local-timer-stop;
+				arm,psci-suspend-param = <0x00010001>;
+				entry-latency-us = <200>;
+				exit-latency-us = <200>;
+				min-residency-us = <800>;
+			};
+
+			MCDI_CLUSTER: mcdi-cluster {
+				compatible = "arm,idle-state";
+				local-timer-stop;
+				arm,psci-suspend-param = <0x01010001>;
+				entry-latency-us = <250>;
+				exit-latency-us = <400>;
+				min-residency-us = <1300>;
+			};
 		};
 	};
 
-- 
1.9.1