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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
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