Re: [PATCH] arm64: dts: mediatek: Add cpuidle support for MT2712

[Matthias Brugger]

On 08/31/2017 07:44 AM, James Liao wrote:

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

Signed-off-by: James Liao <jamesjj.l...@mediatek.com>
---

pushed to v4.14-next/dts64

Thanks.

This patch bases on latest Matthias v4.13-next/dts64 branch [1],
add CPU idle states for MT2712.

[1] https://github.com/mbgg/linux-mediatek.git

  arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 25 +++++++++++++++++++++++++
  1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi 
b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
index 57d0396..5d4e406 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>;
+                       };
                };
        };