Add idle_states table for CPU on am437x. Currently just add C1 state
which gates the MPU clock domain.
Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx>
---
arch/arm/boot/dts/am4372.dtsi | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index ca0aa3f26c0a..71ff2bf68d56 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -45,6 +45,7 @@
#size-cells = <0>;
cpu: cpu@0 {
compatible = "arm,cortex-a9";
+ enable-method = "ti,am4372";
device_type = "cpu";
reg = <0>;
@@ -54,6 +55,17 @@
operating-points-v2 = <&cpu0_opp_table>;
clock-latency = <300000>; /* From omap-cpufreq driver */
+ cpu-idle-states = <&mpu_gate>;
+ };
+
+ idle-states {
+ mpu_gate: mpu_gate {
+ compatible = "arm,idle-state";
+ entry-latency-us = <40>;
+ exit-latency-us = <100>;
+ min-residency-us = <300>;
+ local-timer-stop;
+ };
};
};
--
2.20.1
