[PATCH] arm64: dts: renesas: r8a77990: Add CPUIdle support for CA53 cores
From: Geert Uytterhoeven <geert+renesas@glider.be>
Date: 2020-03-09 17:12:18
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 CA53 cores on R-Car E3. 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/r8a77990.dtsi | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a77990.dtsi b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
index 0ad20b78e6eb62fd..1543f18e834f4bea 100644
--- a/arch/arm64/boot/dts/renesas/r8a77990.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi@@ -88,6 +88,7 @@ power-domains = <&sysc R8A77990_PD_CA53_CPU0>; next-level-cache = <&L2_CA53>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; dynamic-power-coefficient = <277>; clocks =<&cpg CPG_CORE R8A77990_CLK_Z2>; operating-points-v2 = <&cluster1_opp>;
@@ -100,6 +101,7 @@ power-domains = <&sysc R8A77990_PD_CA53_CPU1>; next-level-cache = <&L2_CA53>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP_0>; clocks =<&cpg CPG_CORE R8A77990_CLK_Z2>; operating-points-v2 = <&cluster1_opp>; };
@@ -110,6 +112,19 @@ 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 = <700>; + exit-latency-us = <700>; + min-residency-us = <5000>; + }; + }; }; extal_clk: extal {
--
2.17.1
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