From 9bc7cd07aadedaa388636fe15966bea5e3f91ea7 Mon Sep 17 00:00:00 2001 From: Tho Vu Date: Wed, 8 Jun 2022 17:40:21 +0200 Subject: [PATCH] arm64: dts: renesas: r8a779f0: Add CPUIdle support Support CPUIdle for ARM Cortex-A55 on R-Car S4-8. Signed-off-by: Tho Vu Signed-off-by: Geert Uytterhoeven Reviewed-by: Yoshihiro Shimoda Tested-by: Yoshihiro Shimoda Link: https://lore.kernel.org/r/5310792ce4c06515a5373ff44ceb9b925f007489.1654701480.git.geert+renesas@glider.be --- arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi index 4234781..8e612eb 100644 --- a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi @@ -63,6 +63,7 @@ power-domains = <&sysc R8A779F0_PD_A1E0D0C0>; next-level-cache = <&L3_CA55_0>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; }; a55_1: cpu@100 { @@ -72,6 +73,7 @@ power-domains = <&sysc R8A779F0_PD_A1E0D0C1>; next-level-cache = <&L3_CA55_0>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; }; a55_2: cpu@10000 { @@ -81,6 +83,7 @@ power-domains = <&sysc R8A779F0_PD_A1E0D1C0>; next-level-cache = <&L3_CA55_1>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; }; a55_3: cpu@10100 { @@ -90,6 +93,7 @@ power-domains = <&sysc R8A779F0_PD_A1E0D1C1>; next-level-cache = <&L3_CA55_1>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; }; a55_4: cpu@20000 { @@ -99,6 +103,7 @@ power-domains = <&sysc R8A779F0_PD_A1E1D0C0>; next-level-cache = <&L3_CA55_2>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; }; a55_5: cpu@20100 { @@ -108,6 +113,7 @@ power-domains = <&sysc R8A779F0_PD_A1E1D0C1>; next-level-cache = <&L3_CA55_2>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; }; a55_6: cpu@30000 { @@ -117,6 +123,7 @@ power-domains = <&sysc R8A779F0_PD_A1E1D1C0>; next-level-cache = <&L3_CA55_3>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; }; a55_7: cpu@30100 { @@ -126,6 +133,7 @@ power-domains = <&sysc R8A779F0_PD_A1E1D1C1>; next-level-cache = <&L3_CA55_3>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; }; L3_CA55_0: cache-controller-0 { @@ -155,6 +163,19 @@ cache-unified; cache-level = <3>; }; + + 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>; + }; + }; }; extal_clk: extal { -- 2.7.4