ARM: dts: mt8173: support arm64 cpuidle-dt

This patch adds an idle-states node to describe the mt8173 idle states and
also adds references to the idle-states node in all CPU nodes.

Signed-off-by: Howard Chen <howard.chen@linaro.org>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
index 0696f8fa8fc2ca1ae88a6a4717a969e8555d8dbe..359b8b6c235a84fa4e848f0c7bc43200b1b65550 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@ -51,6 +51,8 @@
                        device_type = "cpu";
                        compatible = "arm,cortex-a53";
                        reg = <0x000>;
+                       enable-method = "psci";
+                       cpu-idle-states = <&CPU_SLEEP_0>;
                };
 
                cpu1: cpu@1 {
@@ -58,6 +60,7 @@
                        compatible = "arm,cortex-a53";
                        reg = <0x001>;
                        enable-method = "psci";
+                       cpu-idle-states = <&CPU_SLEEP_0>;
                };
 
                cpu2: cpu@100 {
@@ -65,6 +68,7 @@
                        compatible = "arm,cortex-a57";
                        reg = <0x100>;
                        enable-method = "psci";
+                       cpu-idle-states = <&CPU_SLEEP_0>;
                };
 
                cpu3: cpu@101 {
@@ -72,6 +76,20 @@
                        compatible = "arm,cortex-a57";
                        reg = <0x101>;
                        enable-method = "psci";
+                       cpu-idle-states = <&CPU_SLEEP_0>;
+               };
+
+               idle-states {
+                       entry-method = "arm,psci";
+
+                       CPU_SLEEP_0: cpu-sleep-0 {
+                               compatible = "arm,idle-state";
+                               local-timer-stop;
+                               entry-latency-us = <639>;
+                               exit-latency-us = <680>;
+                               min-residency-us = <1088>;
+                               arm,psci-suspend-param = <0x0010000>;
+                       };
                };
        };