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. Switching between ADC and GPO is described using as a pinmux. Signed-off-by: Matti Vaittinen <mazziesaccount@xxxxxxxxx> --- .../devicetree/bindings/mfd/rohm,bd79124.yaml | 111 ++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd79124.yaml diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd79124.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd79124.yaml new file mode 100644 index 000000000000..0d2958e82780 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/rohm,bd79124.yaml @@ -0,0 +1,111 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/rohm,bd79124.yaml# +$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 + +patternProperties: + "^channel@[0-9a-f]+$": + type: object + $ref: /schemas/iio/adc/adc.yaml# + description: Represents ADC channel. + + properties: + reg: + items: + minimum: 1 + maximum: 8 + + required: + - reg + + additionalProperties: false + + "-pins$": + type: object + $ref: /schemas/pinctrl/pinmux-node.yaml + + properties: + function: + enum: [gpo, adc] + + groups: + description: + List of pin groups affected by the functions specified in this + subnode. + items: + enum: [ain0, ain1, ain2, ain3, ain4, ain5, ain6, ain7] + + pins: + items: + enum: [ain0, ain1, ain2, ain3, ain4, ain5, ain6, ain7] + + 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>; + + adcpins: adc-pins { + pins = "ain0", "ain1", "ain5", "ain7"; + function = "adc"; + }; + gpopins: gpo-pins { + groups = "ain2", "ain3", "ain4", "ain6"; + function = "gpo"; + }; + }; + }; -- 2.48.1
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