1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4725.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Microchip mcp4725 and mcp4726 DAC 8 9maintainers: 10 - Tomas Novotny <tomas@novotny.cz> 11 12properties: 13 compatible: 14 enum: 15 - microchip,mcp4725 16 - microchip,mcp4726 17 18 reg: 19 maxItems: 1 20 21 vdd-supply: 22 description: | 23 Provides both power and acts as the reference supply on the mcp4725. 24 For the mcp4726 it will be used as the reference voltage if vref-supply 25 is not provided. 26 27 vref-supply: 28 description: 29 Vref pin is used as a voltage reference when this supply is specified. 30 31 microchip,vref-buffered: 32 type: boolean 33 description: | 34 Enable buffering of the external Vref pin. This boolean is not valid 35 without the vref-supply. Quoting the datasheet: This is offered in 36 cases where the reference voltage does not have the current 37 capability not to drop its voltage when connected to the internal 38 resistor ladder circuit. 39 40allOf: 41 - if: 42 properties: 43 compatible: 44 contains: 45 const: microchip,mcp4725 46 then: 47 properties: 48 vref-supply: false 49 required: 50 - vdd-supply 51 52 - if: 53 properties: 54 compatible: 55 contains: 56 const: microchip,mcp4726 57 then: 58 anyOf: 59 - required: 60 - vdd-supply 61 - required: 62 - vref-supply 63 64 - if: 65 not: 66 required: 67 - vref-supply 68 then: 69 properties: 70 microchip,vref-buffered: false 71 72required: 73 - compatible 74 - reg 75 76additionalProperties: false 77 78examples: 79 - | 80 i2c { 81 #address-cells = <1>; 82 #size-cells = <0>; 83 84 mcp4725@60 { 85 compatible = "microchip,mcp4725"; 86 reg = <0x60>; 87 vdd-supply = <&vdac_vdd>; 88 }; 89 }; 90... 91