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-rw-r--r--dts/Bindings/hwmon/pwm-fan.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/dts/Bindings/hwmon/pwm-fan.txt b/dts/Bindings/hwmon/pwm-fan.txt
index c6d5332..49ca5d8 100644
--- a/dts/Bindings/hwmon/pwm-fan.txt
+++ b/dts/Bindings/hwmon/pwm-fan.txt
@@ -6,6 +6,9 @@ Required properties:
- cooling-levels : PWM duty cycle values in a range from 0 to 255
which correspond to thermal cooling states
+Optional properties:
+- fan-supply : phandle to the regulator that provides power to the fan
+
Example:
fan0: pwm-fan {
compatible = "pwm-fan";