On Mon, Apr 05, 2021 at 05:23:25PM +0100, Jonathan Cameron wrote: > From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > > This binding covers class of simple SPI ADCs which only provide > data output - they don't have MOSI pin. > > The only real variation between them is over how many supplies they > use and which one is used for the reference. > > Michael listed as maintainer for this one as it is his driver and > falls under the catch all MAINTAINERS entry for ADI devices. > > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > Cc: Michael Hennerich <michael.hennerich@xxxxxxxxxx> > --- > .../bindings/iio/adc/adi,ad7476.yaml | 173 ++++++++++++++++++ > 1 file changed, 173 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml > new file mode 100644 > index 000000000000..bebf5b435947 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml > @@ -0,0 +1,173 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +# Copyright 2019 Analog Devices Inc. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/iio/adc/adi,ad7476.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: AD7476 and similar simple SPI ADCs from multiple manufacturers. > + > +maintainers: > + - Michael Hennerich <michael.hennerich@xxxxxxxxxx> > + > +description: | > + A lot of simple SPI ADCs have very straight forward interfaces. > + They typically don't provide a MOSI pin, simply reading out data > + on MISO when the clock toggles. > + > +properties: > + compatible: > + enum: > + - adi,ad7091 > + - adi,ad7091r > + - adi,ad7273 > + - adi,ad7274 > + - adi,ad7276 > + - adi,ad7277 > + - adi,ad7278 > + - adi,ad7466 > + - adi,ad7467 > + - adi,ad7468 > + - adi,ad7475 > + - adi,ad7476 > + - adi,ad7476a > + - adi,ad7477 > + - adi,ad7477a > + - adi,ad7478 > + - adi,ad7478a > + - adi,ad7495 > + - adi,ad7910 > + - adi,ad7920 > + - adi,ad7940 > + - ti,adc081s > + - ti,adc101s > + - ti,adc121s > + - ti,ads7866 > + - ti,ads7867 > + - ti,ads7868 > + - lltc,ltc2314-14 > + > + reg: > + maxItems: 1 > + > + vcc-supply: > + description: > + Main powersupply voltage for the chips, sometimes referred to as VDD on > + datasheets. If there is no separate vref-supply, then this is needed > + to establish channel scaling. > + > + vdrive-supply: > + description: > + Some devices have separate supply for their digital control side. > + > + vref-supply: > + description: > + Some devices have a specific reference voltage supplied on a different pin > + to the other supplies. Needed to be able to establish channel scaling > + unless there is also an internal reference available (e.g. ad7091r) > + > + spi-max-frequency: true > + > + adi,conversion-start-gpios: > + description: A GPIO used to trigger the start of a conversion maxItems: 1 With that, Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
