On Sun, 15 Jan 2023 11:22:05 -0500 Hugo Villeneuve <hugo@xxxxxxxxxxx> wrote: > On Sun, 15 Jan 2023 15:57:21 +0100 > Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> wrote: > > > On 13/01/2023 20:49, Hugo Villeneuve wrote: > > > From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx> > > > > > > Add device tree bindings document for the Texas Instruments ADS7924 > > > ADC. > > > > > > Signed-off-by: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx> > > > --- > > > .../bindings/iio/adc/ti,ads7924.yaml | 112 ++++++++++++++++++ > > > 1 file changed, 112 insertions(+) > > > create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml > > > > > > diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml > > > new file mode 100644 > > > index 000000000000..24bbf95383b4 > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml > > > @@ -0,0 +1,112 @@ > > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > > > +%YAML 1.2 > > > +--- > > > +$id: http://devicetree.org/schemas/iio/adc/ti,ads7924.yaml# > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > + > > > +title: TI ADS7924 4 channels 12 bits I2C analog to digital converter > > > + > > > +maintainers: > > > + - Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx> > > > + > > > +description: | > > > + Texas Instruments ADS7924 4 channels 12 bits I2C analog to digital converter > > > + > > > + Specifications: > > > + https://www.ti.com/lit/gpn/ads7924 > > > + > > > +properties: > > > + compatible: > > > + const: ti,ads7924 > > > + > > > + reg: > > > + maxItems: 1 > > > + > > > + vref-supply: > > > + description: > > > + The regulator supply for the ADC reference voltage (AVDD) > > > + > > > + reset-gpios: > > > + maxItems: 1 > > > + > > > + interrupts: > > > + maxItems: 1 > > > + > > > + "#address-cells": > > > + const: 1 > > > + > > > + "#size-cells": > > > + const: 0 > > > + > > > + "#io-channel-cells": > > > + const: 1 > > > + > > > +patternProperties: > > > + "^channel@[0-3]+$": > > > + $ref: adc.yaml > > > + > > > + description: | > > > + Represents the external channels which are connected to the ADC. > > > + > > > + properties: > > > + reg: > > > + description: | > > > + The channel number. It can have up to 4 channels numbered from 0 to 3. > > > + items: > > > + - minimum: 0 > > > + maximum: 3 > > > + > > > + label: > > > + description: | > > > + Unique name to identify the channel. > > > > Drop description, it's coming from adc.yaml. Just "label: true" > > Done. > > > > + > > > + required: > > > + - reg > > > + > > > + additionalProperties: false > > > > You are not allowing anything else from adc.yaml. Is it on purpose? > > I am really not an expert with this Yaml stuff, and reading the documentation makes me probably more confused than before reading it :) > > But one thing that is for sure is that these other properties in adc.yaml are not used in my driver: > > bipolar > diff-channels > settling-time-us > oversampling-ratio > > So is it Ok then to use "additionalProperties: false"? I think so, but what is your recommandation? Makes sense to me. Whilst there are lots of things a channel can support, most of them are hardware related and not universal. Jonathan > > Thank you, > Hugo. > > > > > + > > > +additionalProperties: false > > > + > > > +required: > > > + - compatible > > > + - reg > > > + - vref-supply > > > + - "#address-cells" > > > + - "#size-cells" > > > + > > > > Best regards, > > Krzysztof > > > > > >
