From: Dien Pham <dien.pham.ry@xxxxxxxxxxx>
Enable cpuidle (core shutdown) support for R-Car M3-W CA53 cores.
Signed-off-by: Dien Pham <dien.pham.ry@xxxxxxxxxxx>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
Signed-off-by: Ulrich Hecht <uli+renesas@xxxxxxxx>
---
arch/arm64/boot/dts/renesas/r8a7796.dtsi | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index 3d30b05..0c0877e 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -160,6 +160,7 @@
power-domains = <&sysc R8A7796_PD_CA53_CPU0>;
next-level-cache = <&L2_CA53>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_1>;
clocks =<&cpg CPG_CORE R8A7796_CLK_Z2>;
operating-points-v2 = <&cluster1_opp>;
};
@@ -171,6 +172,7 @@
power-domains = <&sysc R8A7796_PD_CA53_CPU1>;
next-level-cache = <&L2_CA53>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_1>;
clocks =<&cpg CPG_CORE R8A7796_CLK_Z2>;
operating-points-v2 = <&cluster1_opp>;
};
@@ -182,6 +184,7 @@
power-domains = <&sysc R8A7796_PD_CA53_CPU2>;
next-level-cache = <&L2_CA53>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_1>;
clocks =<&cpg CPG_CORE R8A7796_CLK_Z2>;
operating-points-v2 = <&cluster1_opp>;
};
@@ -193,6 +196,7 @@
power-domains = <&sysc R8A7796_PD_CA53_CPU3>;
next-level-cache = <&L2_CA53>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_1>;
clocks =<&cpg CPG_CORE R8A7796_CLK_Z2>;
operating-points-v2 = <&cluster1_opp>;
};
@@ -223,6 +227,16 @@
min-residency-us = <4000>;
status = "okay";
};
+
+ 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>;
+ status = "okay";
+ };
};
};
--
2.7.4
