On Tue, Jul 28, 2020 at 04:52:12PM +0800, Rahul Tanwar wrote: > Intel's LGM(Lightning Mountain) SoC contains a PWM fan controller > which is only used to control the fan attached to the system. This > PWM controller does not have any other consumer other than fan. > Add DT bindings documentation for this PWM fan controller. > > Signed-off-by: Rahul Tanwar <rahul.tanwar@xxxxxxxxxxxxxxx> > --- > .../devicetree/bindings/pwm/intel,lgm-pwm.yaml | 54 ++++++++++++++++++++++ > 1 file changed, 54 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml > > diff --git a/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml b/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml > new file mode 100644 > index 000000000000..9879972470dc > --- /dev/null > +++ b/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml > @@ -0,0 +1,54 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/pwm/intel,lgm-pwm.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: LGM SoC PWM fan controller > + > +maintainers: > + - Rahul Tanwar <rahul.tanwar@xxxxxxxxx> > + > +properties: > + compatible: > + const: intel,lgm-pwm > + > + reg: > + maxItems: 1 > + > + "#pwm-cells": > + const: 2 > + > + clocks: > + maxItems: 1 > + > + resets: > + maxItems: 1 > + > + intel,fan-wire: > + $ref: '/schemas/types.yaml#/definitions/uint32' > + description: Specifies fan mode. Default when unspecified is 2. > + > + intel,max-rpm: > + $ref: '/schemas/types.yaml#/definitions/uint32' > + description: > + Specifies maximum RPM of fan attached to the system. > + Default when unspecified is 4000. Again, these are properties of a fan, not the pwm controller. They belong in a fan node. > + > ++required: > + - compatible > + - reg > + - clocks > + - resets > + > +additionalProperties: false > + > +examples: > + - | > + pwm: pwm@e0d00000 { > + compatible = "intel,lgm-pwm"; > + reg = <0xe0d00000 0x30>; > + #pwm-cells = <2>; > + clocks = <&cgu0 126>; > + resets = <&rcu0 0x30 21>; > + }; > -- > 2.11.0 >
