From: Marius Cristea <marius.cristea@xxxxxxxxxxxxx> This is the device tree schema for iio driver for Microchip PAC194X and PAC195X series of Power Monitors with Accumulator. Signed-off-by: Marius Cristea <marius.cristea@xxxxxxxxxxxxx> --- .../bindings/iio/adc/microchip,pac1944.yaml | 168 ++++++++++++++++++ 1 file changed, 168 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/microchip,pac1944.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,pac1944.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,pac1944.yaml new file mode 100644 index 000000000000..e997a4d536e9 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/microchip,pac1944.yaml @@ -0,0 +1,168 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/microchip,pac1944.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip PAC1944 and PAC1954 Power Monitors with Accumulator + +maintainers: + - Marius Cristea <marius.cristea@xxxxxxxxxxxxx> + +description: | + This device is part of the Microchip family of Power Monitors with Accumulator. + The datasheet for PAC1941_1, PAC1941_1, PAC1942_1, PAC1942_2, PAC1943_1 and PAC1944_1 can be found here: + https://ww1.microchip.com/downloads/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/PAC194X-Family-Data-Sheet-DS20006543.pdf + The datasheet for PAC1951_1, PAC1951_1, PAC1952_1, PAC1952_2, PAC1953_1 and PAC1954_1 can be found here: + https://ww1.microchip.com/downloads/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/PAC195X-Family-Data-Sheet-DS20006539.pdf + +properties: + compatible: + enum: + - microchip,pac1941_1 + - microchip,pac1941_2 + - microchip,pac1942_1 + - microchip,pac1942_2 + - microchip,pac1943_1 + - microchip,pac1944_1 + - microchip,pac1951_1 + - microchip,pac1951_2 + - microchip,pac1952_1 + - microchip,pac1952_2 + - microchip,pac1953_1 + - microchip,pac1954_1 + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + interrupts: + maxItems: 2 + + slow-io-gpios: + description: + A GPIO used to trigger a change is sampling rate (lowering the chip power + consumption). If configured in SLOW 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. + + microchip,gpio: + type: boolean + description: + In default mode, this pin is a GPIO input pin. It can be + configured to be an output pin, as well as the ALERT2 + function. This pin is an open-drain configuration and + needs a pull-up resistor to VDD. + +patternProperties: + "^channel@[1-4]+$": + type: object + $ref: adc.yaml + description: + Represents the external channels which are connected to the ADC. + + properties: + reg: + 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. + + microchip,vbus-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The VBUS could be configured into the following full scale range (FSR) + <0> - VBUS has unipolar +32V to 0V FSR (default) + <1> - VBUS has bipolar +32V to -32V FSR + <2> - VBUS has bipolar +16V to -16V FSR + maximum: 2 + + microchip,vsense-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The VSENSE could be configured into the following full scale range (FSR) + <0> - VSENSE has unipolar +100 mV to 0V FSR (default) + <1> - VSENSE has bipolar +100 mV to -100 mV FSR + <2> - VSENSE has bipolar +50 mV to -50 mV FSR + maximum: 2 + + microchip,accumulation-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + The Hardware Accumulator could be configured to accumulate + VPOWER, VSENSE or VBUS + <0> - Accumulator accumulates VPOWER (default) + <1> - Accumulator accumulates VSENSE + <2> - Accumulator accumulates VBUS + maximum: 2 + + required: + - reg + - shunt-resistor-micro-ohms + + unevaluatedProperties: false + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + power-monitor@10 { + compatible = "microchip,pac1954_1"; + reg = <0x10>; + + #address-cells = <1>; + #size-cells = <0>; + + status = "okay"; + + channel@1 { + reg = <0x1>; + shunt-resistor-micro-ohms = <24900>; + label = "CPU"; + microchip,vbus-mode = <0>; + microchip,vsense-mode = <0>; + microchip,accumulation-mode = <0>; + }; + + channel@3 { + reg = <0x3>; + shunt-resistor-micro-ohms = <75000>; + label = "MEM"; + microchip,vbus-mode = <0>; + microchip,vsense-mode = <0>; + microchip,accumulation-mode = <0>; + }; + + channel@4 { + reg = <0x4>; + shunt-resistor-micro-ohms = <100000>; + label = "NET"; + microchip,vbus-mode = <0>; + microchip,vsense-mode = <0>; + microchip,accumulation-mode = <0>; + }; + }; + }; + +... -- 2.43.0
