On Mon, Mar 11, 2024 at 06:13:47PM +0700, Chanh Nguyen wrote: > Add pwmout-pin-as-tach-input property. > > Signed-off-by: Chanh Nguyen <chanh@xxxxxxxxxxxxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/hwmon/max31790.yaml | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/Documentation/devicetree/bindings/hwmon/max31790.yaml b/Documentation/devicetree/bindings/hwmon/max31790.yaml > index 5a93e6bdebda..447cac17053a 100644 > --- a/Documentation/devicetree/bindings/hwmon/max31790.yaml > +++ b/Documentation/devicetree/bindings/hwmon/max31790.yaml > @@ -25,6 +25,16 @@ properties: > reg: > maxItems: 1 > > + pwmout-pin-as-tach-input: > + description: | > + An array of six integers responds to six PWM channels for > + configuring the pwm to tach mode. > + When set to 0, the associated PWMOUT produces a PWM waveform for > + control of fan speed. When set to 1, PWMOUT becomes a TACH input > + $ref: /schemas/types.yaml#/definitions/uint8-array > + maxItems: 6 > + minItems: 6 Seems incomplete. For example, fan tachs have different number of pulses per revolution, don't you need to know that too? There's a common fan binding now (or pending). You should use that and this property won't be needed. Rob
