[PATCH v3 17/17] arm64: dts: mediatek: Add CPU Idle support

amergnat
2023-03-29T08:56:27Z

From: Amjad Ouled-Ameur <aouledameur@baylibre.com>

MT8365 has 3 CPU Idle states:
- MCDI_CPU. (Multi-Core-Deep-Idle)
- MCDI_CLUSTER.
- DPIDLE. (Deep-Idle)

Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
arch/arm64/boot/dts/mediatek/mt8365.dtsi | 35 ++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
index 959d8533c24c..b5f5c77f7f84 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
@@ -112,6 +112,7 @@ cpu0: cpu@0 {
reg = <0x0>;
#cooling-cells = <2>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_MCDI &CLUSTER_MCDI &CLUSTER_DPIDLE>;
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
@@ -131,6 +132,7 @@ cpu1: cpu@1 {
reg = <0x1>;
#cooling-cells = <2>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_MCDI &CLUSTER_MCDI &CLUSTER_DPIDLE>;
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
@@ -150,6 +152,7 @@ cpu2: cpu@2 {
reg = <0x2>;
#cooling-cells = <2>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_MCDI &CLUSTER_MCDI &CLUSTER_DPIDLE>;
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
@@ -169,6 +172,7 @@ cpu3: cpu@3 {
reg = <0x3>;
#cooling-cells = <2>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_MCDI &CLUSTER_MCDI &CLUSTER_DPIDLE>;
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
@@ -182,6 +186,37 @@ cpu3: cpu@3 {
operating-points-v2 = <&cluster0_opp>;
};

+ idle-states {
+ entry-method = "psci";
+
+ CPU_MCDI: cpu-mcdi {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ arm,psci-suspend-param = <0x00010001>;
+ entry-latency-us = <300>;
+ exit-latency-us = <200>;
+ min-residency-us = <1000>;
+ };
+
+ CLUSTER_MCDI: cluster-mcdi {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ arm,psci-suspend-param = <0x01010001>;
+ entry-latency-us = <350>;
+ exit-latency-us = <250>;
+ min-residency-us = <1200>;
+ };
+
+ CLUSTER_DPIDLE: cluster-dpidle {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ arm,psci-suspend-param = <0x01010004>;
+ entry-latency-us = <300>;
+ exit-latency-us = <800>;
+ min-residency-us = <3300>;
+ };
+ };
+
l2: l2-cache {
compatible = "cache";
cache-level = <2>;

--
2.25.1