add an idle-states node to describe the mt8173 cpu idle
add a reference to the idle-states node in each CPU node
Signed-off-by: Howard Chen <howard.c...@linaro.org>
---
arch/arm64/boot/dts/mediatek/mt8173.dtsi | 30 ++++++++++++++++++++++++++----
1 file changed, 26 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index 8554ec3..96dff1e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -48,6 +48,8 @@
device_type = "cpu";
compatible = "arm,cortex-a53";
reg = <0x000>;
+ enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0_0 &CLUSTER_SLEEP_0>;
};
cpu1: cpu@1 {
@@ -55,6 +57,7 @@
compatible = "arm,cortex-a53";
reg = <0x001>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0_0 &CLUSTER_SLEEP_0>;
};
cpu2: cpu@100 {
@@ -62,6 +65,7 @@
compatible = "arm,cortex-a57";
reg = <0x100>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0_0 &CLUSTER_SLEEP_0>;
};
cpu3: cpu@101 {
@@ -69,15 +73,33 @@
compatible = "arm,cortex-a57";
reg = <0x101>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0_0 &CLUSTER_SLEEP_0>;
};
+
+ idle-states {
+ entry-method = "arm,psci-0.2";
+
+ CPU_SLEEP_0_0: cpu-sleep-0-0 {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x0010000>;
+ entry-latency-us = <600>;
+ exit-latency-us = <600>;
+ min-residency-us = <1200>;
+ };
+
+ CLUSTER_SLEEP_0: cluster-sleep-0 {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x1010000>;
+ entry-latency-us = <800>;
+ exit-latency-us = <1000>;
+ min-residency-us = <2000>;
+ wakeup-latency-us = <1000>;
+ };
};
psci {
- compatible = "arm,psci";
+ compatible = "arm,psci-0.2";
method = "smc";
- cpu_suspend = <0x84000001>;
- cpu_off = <0x84000002>;
- cpu_on = <0x84000003>;
};
uart_clk: dummy26m {
--
1.9.1
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