On Wed, Jan 22, 2020 at 02:17:01PM +0200, Beniamin Bia wrote: > From: Michael Hennerich <michael.hennerich@xxxxxxxxxx> > > Document support for Analog Devices MC425A Step Attenuator. > > Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx> > Signed-off-by: Beniamin Bia <beniamin.bia@xxxxxxxxxx> > --- > .../bindings/iio/amplifiers/adi,hmc425a.yaml | 56 +++++++++++++++++++ > 1 file changed, 56 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml > > diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml > new file mode 100644 > index 000000000000..a0afa661f4ac > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml > @@ -0,0 +1,56 @@ > +# SPDX-License-Identifier: GPL-2.0 Dual license new bindings: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/iio/amplifiers/adi,hmc425a.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: HMC425A 6-bit Digital Step Attenuator > + > +maintainers: > +- Michael Hennerich <michael.hennerich@xxxxxxxxxx> > +- Beniamin Bia <beniamin.bia@xxxxxxxxxx> > + > +description: | > + Digital Step Attenuator IIO device with gpio interface. > + HMC425A 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz > + https://www.analog.com/media/en/technical-documentation/data-sheets/hmc425A.pdf > + > +properties: > + compatible: > + enum: > + - adi,hmc425a > + > + vcc-supply: > + description: > + Digital voltage regulator (see regulator/regulator.txt) > + maxItems: 1 All supplies are a single entry, so drop this. Really, 'vcc-supply: true' is sufficient. > + > + ctrl-gpios: > + description: > + Must contain an array of 6 GPIO specifiers, referring to the GPIO pins > + connected to the control pins V1-V6. > + maxItems: 6 > + > +required: > + - compatible > + - ctrl-gpios > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + gpio { > + #address-cells = <1>; > + #size-cells = <0>; GPIO clients are not child nodes of GPIO controllers, so you can remove this node. > + gpio_hmc425a: hmc425a { > + compatible = "adi,hmc425a"; > + ctrl-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>, > + <&gpio 39 GPIO_ACTIVE_HIGH>, > + <&gpio 38 GPIO_ACTIVE_HIGH>, > + <&gpio 37 GPIO_ACTIVE_HIGH>, > + <&gpio 36 GPIO_ACTIVE_HIGH>, > + <&gpio 35 GPIO_ACTIVE_HIGH>; > + > + vcc-supply = <&foo>; > + }; > + }; > +... > -- > 2.17.1 >
