arm64: dts: mediatek: Add cpuidle support for MT2712

Add CPU idle state nodes to enable C1/C2 idle states.

Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
index 57d0396b7faa..5d4e406bb35d 100644
--- a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
@@ -39,6 +39,7 @@
                         device_type = "cpu";
                         compatible = "arm,cortex-a35";
                         reg = <0x000>;
+                        cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
                 };
 
                 cpu1: cpu@1 {
@@ -46,6 +47,7 @@
                         compatible = "arm,cortex-a35";
                         reg = <0x001>;
                         enable-method = "psci";
+                        cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
                 };
 
                 cpu2: cpu@200 {
@@ -53,6 +55,29 @@
                         compatible = "arm,cortex-a72";
                         reg = <0x200>;
                         enable-method = "psci";
+                        cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
+                };
+
+                idle-states {
+                        entry-method = "arm,psci";
+
+                        CPU_SLEEP_0: cpu-sleep-0 {
+                                compatible = "arm,idle-state";
+                                local-timer-stop;
+                                entry-latency-us = <100>;
+                                exit-latency-us = <80>;
+                                min-residency-us = <2000>;
+                                arm,psci-suspend-param = <0x0010000>;
+                        };
+
+                        CLUSTER_SLEEP_0: cluster-sleep-0 {
+                                compatible = "arm,idle-state";
+                                local-timer-stop;
+                                entry-latency-us = <350>;
+                                exit-latency-us = <80>;
+                                min-residency-us = <3000>;
+                                arm,psci-suspend-param = <0x1010000>;
+                        };
                 };
         };