On Wed, Feb 05, 2025 at 03:34:29PM +0200, Matti Vaittinen wrote: > Add binding document for the ROHM BD79124 ADC / GPO. > > ROHM BD79124 is a 8-channel, 12-bit ADC. The input pins can also be used > as general purpose outputs. > > Signed-off-by: Matti Vaittinen <mazziesaccount@xxxxxxxxx> > --- > Revision history: > RFC v1 => v2: > - drop MFD and represent directly as ADC > - drop pinmux and treat all non ADC channel pins as GPOs > --- > .../bindings/iio/adc/rohm,bd79124.yaml | 114 ++++++++++++++++++ > 1 file changed, 114 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/adc/rohm,bd79124.yaml > > diff --git a/Documentation/devicetree/bindings/iio/adc/rohm,bd79124.yaml b/Documentation/devicetree/bindings/iio/adc/rohm,bd79124.yaml > new file mode 100644 > index 000000000000..50889dc6b9a8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/adc/rohm,bd79124.yaml > @@ -0,0 +1,114 @@ > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/iio/adc/rohm,bd79124.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: ROHM BD79124 ADC/GPO > + > +maintainers: > + - Matti Vaittinen <mazziesaccount@xxxxxxxxx> > + > +description: | > + The ROHM BD79124 is a 12-bit, 8-channel, SAR ADC. The ADC supports > + an automatic measurement mode, with an alarm interrupt for out-of-window > + measurements. ADC input pins can be also configured as general purpose > + outputs. > + > +properties: > + compatible: > + const: rohm,bd79124 > + > + reg: > + description: > + I2C slave address. > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + gpio-controller: true > + > + "#gpio-cells": > + const: 1 > + description: > + The pin number. > + > + vdd-supply: true > + > + iovdd-supply: true > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > +patternProperties: > + "^channel@[0-9a-f]+$": You can only have 8 channels, there's no need for this to be so permissive, right? Otherwise, this looks good enough to me. > + type: object > + $ref: /schemas/iio/adc/adc.yaml# > + description: Represents ADC channel. > + > + properties: > + reg: > + description: AIN pin number > + minimum: 0 > + maximum: 7 > + > + required: > + - reg > + > + additionalProperties: false > + > +required: > + - compatible > + - reg > + - iovdd-supply > + - vdd-supply > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/irq.h> > + #include <dt-bindings/leds/common.h> > + i2c { > + #address-cells = <1>; > + #size-cells = <0>; > + adc: adc@10 { > + compatible = "rohm,bd79124"; > + reg = <0x10>; > + > + interrupt-parent = <&gpio1>; > + interrupts = <29 8>; > + > + vdd-supply = <&dummyreg>; > + iovdd-supply = <&dummyreg>; > + > + #address-cells = <1>; > + #size-cells = <0>; > + > + channel@0 { > + reg = <0>; > + }; > + channel@1 { > + reg = <1>; > + }; > + channel@2 { > + reg = <2>; > + }; > + channel@3 { > + reg = <3>; > + }; > + channel@4 { > + reg = <4>; > + }; > + channel@5 { > + reg = <5>; > + }; > + channel@6 { > + reg = <6>; > + }; > + }; > + }; > -- > 2.48.1 >
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