From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Add a binding for this Lithium Ion Battery monitoring chip/chain of chips as it is now clean and ready to move out of staging. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> --- .../bindings/iio/adc/adi,ad7280a.yaml | 87 +++++++++++++++++++ 1 file changed, 87 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7280a.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7280a.yaml new file mode 100644 index 000000000000..77b8f67fe446 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7280a.yaml @@ -0,0 +1,87 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7280a.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7280a Lithium Ion Battery Monitoring System + +maintainers: + - Michael Hennerich <michael.hennerich@xxxxxxxxxx> + - Jonathan Cameron <jic23@xxxxxxxxxx> + +description: | + Bindings for the Analog Devices AD7280a Battery Monitoring System. + Used in devices such as hybrid electric cars, battery backup and power tools. + Multiple chips can be daisy chained and accessed via a single SPI interface. + Data sheet found here: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7280A.pdf + +properties: + compatible: + const: adi,ad7280a + + reg: + maxItems: 1 + + interrupts: + description: IRQ line for the ADC + maxItems: 1 + + spi-max-frequency: true + + adi,temp-alert-last-chan: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Allows limiting of scope of which channels are considered for temperature + alerts, typically because not all are wired to anything. Only applies to + last device in the daisy chain. + default: 5 + enum: [3, 4, 5] + + adi,voltage-alert-last-chan: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Allows limiting of scope of which channels are considered for voltage + alerts, typically because not all are wired to anything. Only applies to + last device in the daisy chain. + default: 5 + enum: [3, 4, 5] + + adi,acquisition-time-ns: + description: + Additional time may be needed to charge the sampling capacitors depending + on external writing. + default: 400 + enum: [400, 800, 1200, 1600] + + adi,thermistor-termination: + type: boolean + description: + Enable the thermistor termination function. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad7280a"; + reg = <0>; + spi-max-frequency = <700000>; + interrupt-parent = <&gpio>; + interrupts = <25 2>; + adi,thermistor-termination; + adi,acquisition-time-ns = <800>; + adi,voltage-alert-last-chan = <5>; + adi,temp-alert-last-chan = <5>; + }; + }; +... -- 2.34.1
