1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause 2*4882a593Smuzhiyun# Copyright 2019 Marcus Folkesson <marcus.folkesson@gmail.com> 3*4882a593Smuzhiyun%YAML 1.2 4*4882a593Smuzhiyun--- 5*4882a593Smuzhiyun$id: "http://devicetree.org/schemas/iio/adc/microchip,mcp3911.yaml#" 6*4882a593Smuzhiyun$schema: "http://devicetree.org/meta-schemas/core.yaml#" 7*4882a593Smuzhiyun 8*4882a593Smuzhiyuntitle: Microchip MCP3911 Dual channel analog front end (ADC) 9*4882a593Smuzhiyun 10*4882a593Smuzhiyunmaintainers: 11*4882a593Smuzhiyun - Marcus Folkesson <marcus.folkesson@gmail.com> 12*4882a593Smuzhiyun - Kent Gustavsson <nedo80@gmail.com> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyundescription: | 15*4882a593Smuzhiyun Bindings for the Microchip MCP3911 Dual channel ADC device. Datasheet can be 16*4882a593Smuzhiyun found here: https://ww1.microchip.com/downloads/en/DeviceDoc/20002286C.pdf 17*4882a593Smuzhiyun 18*4882a593Smuzhiyunproperties: 19*4882a593Smuzhiyun compatible: 20*4882a593Smuzhiyun enum: 21*4882a593Smuzhiyun - microchip,mcp3911 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun reg: 24*4882a593Smuzhiyun maxItems: 1 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun spi-max-frequency: 27*4882a593Smuzhiyun maximum: 20000000 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun clocks: 30*4882a593Smuzhiyun description: | 31*4882a593Smuzhiyun Phandle and clock identifier for external sampling clock. 32*4882a593Smuzhiyun If not specified, the internal crystal oscillator will be used. 33*4882a593Smuzhiyun maxItems: 1 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun interrupts: 36*4882a593Smuzhiyun description: IRQ line of the ADC 37*4882a593Smuzhiyun maxItems: 1 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun microchip,device-addr: 40*4882a593Smuzhiyun description: Device address when multiple MCP3911 chips are present on the same SPI bus. 41*4882a593Smuzhiyun $ref: /schemas/types.yaml#/definitions/uint32 42*4882a593Smuzhiyun enum: [0, 1, 2, 3] 43*4882a593Smuzhiyun default: 0 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun vref-supply: 46*4882a593Smuzhiyun description: | 47*4882a593Smuzhiyun Phandle to the external reference voltage supply. 48*4882a593Smuzhiyun If not specified, the internal voltage reference (1.2V) will be used. 49*4882a593Smuzhiyun 50*4882a593Smuzhiyunrequired: 51*4882a593Smuzhiyun - compatible 52*4882a593Smuzhiyun - reg 53*4882a593Smuzhiyun 54*4882a593SmuzhiyunadditionalProperties: false 55*4882a593Smuzhiyun 56*4882a593Smuzhiyunexamples: 57*4882a593Smuzhiyun - | 58*4882a593Smuzhiyun spi { 59*4882a593Smuzhiyun #address-cells = <1>; 60*4882a593Smuzhiyun #size-cells = <0>; 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun adc@0 { 63*4882a593Smuzhiyun compatible = "microchip,mcp3911"; 64*4882a593Smuzhiyun reg = <0>; 65*4882a593Smuzhiyun interrupt-parent = <&gpio5>; 66*4882a593Smuzhiyun interrupts = <15 2>; 67*4882a593Smuzhiyun spi-max-frequency = <20000000>; 68*4882a593Smuzhiyun microchip,device-addr = <0>; 69*4882a593Smuzhiyun vref-supply = <&vref_reg>; 70*4882a593Smuzhiyun clocks = <&xtal>; 71*4882a593Smuzhiyun }; 72*4882a593Smuzhiyun }; 73