From: Marius Cristea <marius.cristea@xxxxxxxxxxxxx> This is the device tree schema for iio driver for Microchip PAC193X series of Power Monitors with Accumulator. Signed-off-by: Marius Cristea <marius.cristea@xxxxxxxxxxxxx> --- .../bindings/iio/adc/microchip,pac1934.yaml | 146 ++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/microchip,pac1934.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,pac1934.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,pac1934.yaml new file mode 100644 index 000000000000..837053ed8a71 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/microchip,pac1934.yaml @@ -0,0 +1,146 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/microchip,pac1934.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip PAC1934 Power Monitors with Accumulator + +maintainers: + - Marius Cristea <marius.cristea@xxxxxxxxxxxxx> + +description: | + Bindings for the Microchip family of Power Monitors with Accumulator. + The datasheet for PAC1931, PAC1932, PAC1933 and PAC1934 can be found here: + https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/PAC1931-Family-Data-Sheet-DS20005850E.pdf + +properties: + compatible: + enum: + - microchip,pac1931 + - microchip,pac1932 + - microchip,pac1933 + - microchip,pac1934 + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + interrupts: + description: IRQ line of the ADC + maxItems: 1 + + drive-open-drain: + description: The IRQ signal is configured as open-drain. + type: boolean + maxItems: 1 + + microchip,slow-io: + type: boolean + description: | + A GPIO used to trigger a change is sampling rate (lowering the chip power consumption). + In default mode, if this pin is forced high, sampling rate is forced to eight + samples/second. When it is forced low, the sampling rate is 1024 samples/second unless + a different sample rate has been programmed. + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + +patternProperties: + "^channel@[1-4]+$": + type: object + $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 1 to 4. + items: + - minimum: 1 + maximum: 4 + + shunt-resistor-micro-ohms: + description: | + Value in micro Ohms of the shunt resistor connected between + the SENSE+ and SENSE- inputs, across which the current is measured. Value + is needed to compute the scaling of the measured current. + + label: + $ref: /schemas/types.yaml#/definitions/string + description: Name of the monitored power rail. + + bipolar: + description: Whether the channel is bi-directional. + type: boolean + + required: + - reg + - shunt-resistor-micro-ohms + + additionalProperties: false + +allOf: + - if: + required: + - interrupts + then: + required: + - drive-open-drain + else: + properties: + drive-open-drain: false + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + pac193x: pac193x@10 { + compatible = "microchip,pac1934"; + reg = <0x10>; + + #address-cells = <1>; + #size-cells = <0>; + + channel@1 { + reg = <0x1>; + shunt-resistor-micro-ohms = <24900000>; + label = "CPU"; + }; + + channel@2 { + reg = <0x2>; + shunt-resistor-micro-ohms = <49900000>; + label = "GPU"; + }; + + channel@3 { + reg = <0x3>; + shunt-resistor-micro-ohms = <75000000>; + label = "MEM"; + bipolar; + }; + + channel@4 { + reg = <0x4>; + shunt-resistor-micro-ohms = <100000000>; + label = "NET"; + bipolar; + }; + }; + }; + +... -- 2.34.1
