linux-kernel - [PATCH 2/2] arm64: dts: renesas: r8a774e1: Add cpuidle support for CA5x cores

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Message-Id: <20200827145315.26261-3-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date:   Thu, 27 Aug 2020 15:53:15 +0100
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Prabhakar <prabhakar.csengg@...il.com>
Subject: [PATCH 2/2] arm64: dts: renesas: r8a774e1: Add cpuidle support for CA5x cores

Enable cpuidle (core shutdown) support for RZ/G2H CA5x cores.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 arch/arm64/boot/dts/renesas/r8a774e1.dtsi | 30 +++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a774e1.dtsi b/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
index 34fdb9a0c325..e5445ba99e84 100644
--- a/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
@@ -127,6 +127,7 @@
 			power-domains = <&sysc R8A774E1_PD_CA57_CPU0>;
 			next-level-cache = <&L2_CA57>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_0>;
 			dynamic-power-coefficient = <854>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z>;
 			operating-points-v2 = <&cluster0_opp>;
@@ -141,6 +142,7 @@
 			power-domains = <&sysc R8A774E1_PD_CA57_CPU1>;
 			next-level-cache = <&L2_CA57>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_0>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z>;
 			operating-points-v2 = <&cluster0_opp>;
 			capacity-dmips-mhz = <1024>;
@@ -154,6 +156,7 @@
 			power-domains = <&sysc R8A774E1_PD_CA57_CPU2>;
 			next-level-cache = <&L2_CA57>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_0>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z>;
 			operating-points-v2 = <&cluster0_opp>;
 			capacity-dmips-mhz = <1024>;
@@ -167,6 +170,7 @@
 			power-domains = <&sysc R8A774E1_PD_CA57_CPU3>;
 			next-level-cache = <&L2_CA57>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_1>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z>;
 			operating-points-v2 = <&cluster0_opp>;
 			capacity-dmips-mhz = <1024>;
@@ -180,6 +184,7 @@
 			power-domains = <&sysc R8A774E1_PD_CA53_CPU0>;
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_1>;
 			#cooling-cells = <2>;
 			dynamic-power-coefficient = <277>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z2>;
@@ -194,6 +199,7 @@
 			power-domains = <&sysc R8A774E1_PD_CA53_CPU1>;
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_1>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z2>;
 			operating-points-v2 = <&cluster1_opp>;
 			capacity-dmips-mhz = <535>;
@@ -206,6 +212,7 @@
 			power-domains = <&sysc R8A774E1_PD_CA53_CPU2>;
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_1>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z2>;
 			operating-points-v2 = <&cluster1_opp>;
 			capacity-dmips-mhz = <535>;
@@ -218,6 +225,7 @@
 			power-domains = <&sysc R8A774E1_PD_CA53_CPU3>;
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_1>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z2>;
 			operating-points-v2 = <&cluster1_opp>;
 			capacity-dmips-mhz = <535>;
@@ -236,6 +244,28 @@
 			cache-unified;
 			cache-level = <2>;
 		};
+
+		idle-states {
+			entry-method = "psci";
+
+			CPU_SLEEP_0: cpu-sleep-0 {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x0010000>;
+				local-timer-stop;
+				entry-latency-us = <400>;
+				exit-latency-us = <500>;
+				min-residency-us = <4000>;
+			};
+
+			CPU_SLEEP_1: cpu-sleep-1 {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x0010000>;
+				local-timer-stop;
+				entry-latency-us = <700>;
+				exit-latency-us = <700>;
+				min-residency-us = <5000>;
+			};
+		};
 	};
 
 	extal_clk: extal {
-- 
2.17.1