| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause |
| 2 | # Copyright 2019 Marcus Folkesson <marcus.folkesson@gmail.com> |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/iio/adc/microchip,mcp3911.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: Microchip MCP3911 Dual channel analog front end (ADC) |
| 9 | |
| 10 | maintainers: |
| 11 | - Marcus Folkesson <marcus.folkesson@gmail.com> |
| 12 | - Kent Gustavsson <nedo80@gmail.com> |
| 13 | |
| 14 | description: | |
| 15 | Bindings for the Microchip MCP3911 Dual channel ADC device. Datasheet can be |
| 16 | found here: https://ww1.microchip.com/downloads/en/DeviceDoc/20002286C.pdf |
| 17 | |
| 18 | properties: |
| 19 | compatible: |
| 20 | enum: |
| 21 | - microchip,mcp3910 |
| 22 | - microchip,mcp3911 |
| 23 | - microchip,mcp3912 |
| 24 | - microchip,mcp3913 |
| 25 | - microchip,mcp3914 |
| 26 | - microchip,mcp3918 |
| 27 | - microchip,mcp3919 |
| 28 | |
| 29 | reg: |
| 30 | maxItems: 1 |
| 31 | |
| 32 | spi-max-frequency: |
| 33 | maximum: 20000000 |
| 34 | |
| 35 | clocks: |
| 36 | description: | |
| 37 | Phandle and clock identifier for external sampling clock. |
| 38 | If not specified, the internal crystal oscillator will be used. |
| 39 | maxItems: 1 |
| 40 | |
| 41 | interrupts: |
| 42 | description: IRQ line of the ADC |
| 43 | maxItems: 1 |
| 44 | |
| 45 | microchip,data-ready-hiz: |
| 46 | description: |
| 47 | Data Ready Pin Inactive State Control |
| 48 | true = The DR pin state is high-impedance |
| 49 | false = The DR pin state is logic high |
| 50 | type: boolean |
| 51 | |
| 52 | microchip,device-addr: |
| 53 | description: Device address when multiple MCP3911 chips are present on the same SPI bus. |
| 54 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 55 | enum: [0, 1, 2, 3] |
| 56 | default: 0 |
| 57 | |
| 58 | vref-supply: |
| 59 | description: | |
| 60 | Phandle to the external reference voltage supply. |
| 61 | If not specified, the internal voltage reference (1.2V) will be used. |
| 62 | |
| 63 | required: |
| 64 | - compatible |
| 65 | - reg |
| 66 | |
| 67 | allOf: |
| 68 | - $ref: /schemas/spi/spi-peripheral-props.yaml# |
| 69 | |
| 70 | unevaluatedProperties: false |
| 71 | |
| 72 | examples: |
| 73 | - | |
| 74 | spi { |
| 75 | #address-cells = <1>; |
| 76 | #size-cells = <0>; |
| 77 | |
| 78 | adc@0 { |
| 79 | compatible = "microchip,mcp3911"; |
| 80 | reg = <0>; |
| 81 | interrupt-parent = <&gpio5>; |
| 82 | interrupts = <15 2>; |
| 83 | spi-max-frequency = <20000000>; |
| 84 | microchip,device-addr = <0>; |
| 85 | vref-supply = <&vref_reg>; |
| 86 | clocks = <&xtal>; |
| 87 | }; |
| 88 | }; |