[PATCH] arm64: dts: renesas: r8a77965: Add CPUIdle support for CA57 cores
From: Geert Uytterhoeven <geert+renesas@glider.be>
Date: 2020-03-09 17:11:26
Also in:
linux-renesas-soc
Subsystem:
arm/risc-v/renesas architecture, the rest · Maintainers:
Geert Uytterhoeven, Magnus Damm, Linus Torvalds
From: Takeshi Kihara <redacted> Enable cpuidle (core shutdown) support for the CA57 cores on R-Car M3-N. Signed-off-by: Takeshi Kihara <redacted> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- To be queued in renesas-devel for v5.7. arch/arm64/boot/dts/renesas/r8a77965.dtsi | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
index f7468822e81e41d6..d82dd4e67b62b85c 100644
--- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi@@ -111,6 +111,7 @@ power-domains = <&sysc R8A77965_PD_CA57_CPU0>; next-level-cache = <&L2_CA57>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; #cooling-cells = <2>; dynamic-power-coefficient = <854>; clocks = <&cpg CPG_CORE R8A77965_CLK_Z>;
@@ -124,6 +125,7 @@ power-domains = <&sysc R8A77965_PD_CA57_CPU1>; next-level-cache = <&L2_CA57>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; clocks = <&cpg CPG_CORE R8A77965_CLK_Z>; operating-points-v2 = <&cluster0_opp>; };
@@ -134,6 +136,19 @@ 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>; + }; + }; }; extal_clk: extal {
--
2.17.1
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