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Message-ID: <1448890918-6999-1-git-send-email-jszhang@marvell.com>
Date: Mon, 30 Nov 2015 21:41:58 +0800
From: Jisheng Zhang <jszhang@...vell.com>
To: <sebastian.hesselbarth@...il.com>, <lorenzo.pieralisi@....com>,
<daniel.lezcano@...aro.org>, <will.deacon@....com>,
<catalin.marinas@....com>, <robh+dt@...nel.org>,
<pawel.moll@....com>, <mark.rutland@....com>,
<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>
CC: <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, Jisheng Zhang <jszhang@...vell.com>
Subject: [PATCH] arm64: dts: berlin4ct: support cpuidle-dt
This patch adds an idle-states node to describe the berlin4ct idle
states and also adds references to the idle-states node in all CPU
nodes. After this patch cpuidle is enabled.
Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
---
arch/arm64/boot/dts/marvell/berlin4ct.dtsi | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm64/boot/dts/marvell/berlin4ct.dtsi b/arch/arm64/boot/dts/marvell/berlin4ct.dtsi
index 39d0676..3649cea 100644
--- a/arch/arm64/boot/dts/marvell/berlin4ct.dtsi
+++ b/arch/arm64/boot/dts/marvell/berlin4ct.dtsi
@@ -69,6 +69,7 @@
device_type = "cpu";
reg = <0x0>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0>;
};
cpu1: cpu@1 {
@@ -76,6 +77,7 @@
device_type = "cpu";
reg = <0x1>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0>;
};
cpu2: cpu@2 {
@@ -83,6 +85,7 @@
device_type = "cpu";
reg = <0x2>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0>;
};
cpu3: cpu@3 {
@@ -90,6 +93,19 @@
device_type = "cpu";
reg = <0x3>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0>;
+ };
+
+ idle-states {
+ entry-method = "psci";
+ CPU_SLEEP_0: cpu-sleep-0 {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ arm,psci-suspend-param = <0x0010000>;
+ entry-latency-us = <75>;
+ exit-latency-us = <155>;
+ min-residency-us = <1000>;
+ };
};
};
--
2.6.2
--
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