st,stm32-dac.yaml (2273B)
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: "http://devicetree.org/schemas/iio/dac/st,stm32-dac.yaml#" 5$schema: "http://devicetree.org/meta-schemas/core.yaml#" 6 7title: STMicroelectronics STM32 DAC bindings 8 9description: | 10 The STM32 DAC is a 12-bit voltage output digital-to-analog converter. The DAC 11 may be configured in 8 or 12-bit mode. It has two output channels, each with 12 its own converter. 13 It has built-in noise and triangle waveform generator and supports external 14 triggers for conversions. The DAC's output buffer allows a high drive output 15 current. 16 17maintainers: 18 - Fabrice Gasnier <fabrice.gasnier@foss.st.com> 19 20properties: 21 compatible: 22 enum: 23 - st,stm32f4-dac-core 24 - st,stm32h7-dac-core 25 26 reg: 27 maxItems: 1 28 29 resets: 30 maxItems: 1 31 32 clocks: 33 maxItems: 1 34 35 clock-names: 36 items: 37 - const: pclk 38 39 vref-supply: 40 description: Phandle to the vref input analog reference voltage. 41 42 '#address-cells': 43 const: 1 44 45 '#size-cells': 46 const: 0 47 48additionalProperties: false 49 50required: 51 - compatible 52 - reg 53 - clocks 54 - clock-names 55 - vref-supply 56 - '#address-cells' 57 - '#size-cells' 58 59patternProperties: 60 "^dac@[1-2]+$": 61 type: object 62 description: 63 A DAC block node should contain at least one subnode, representing an 64 DAC instance/channel available on the machine. 65 66 properties: 67 compatible: 68 const: st,stm32-dac 69 70 reg: 71 description: Must be either 1 or 2, to define (single) channel in use 72 enum: [1, 2] 73 74 '#io-channel-cells': 75 const: 1 76 77 additionalProperties: false 78 79 required: 80 - compatible 81 - reg 82 - '#io-channel-cells' 83 84examples: 85 - | 86 // Example on stm32mp157c 87 #include <dt-bindings/clock/stm32mp1-clks.h> 88 dac: dac@40017000 { 89 compatible = "st,stm32h7-dac-core"; 90 reg = <0x40017000 0x400>; 91 clocks = <&rcc DAC12>; 92 clock-names = "pclk"; 93 vref-supply = <&vref>; 94 #address-cells = <1>; 95 #size-cells = <0>; 96 97 dac@1 { 98 compatible = "st,stm32-dac"; 99 #io-channel-cells = <1>; 100 reg = <1>; 101 }; 102 103 dac@2 { 104 compatible = "st,stm32-dac"; 105 #io-channel-cells = <1>; 106 reg = <2>; 107 }; 108 }; 109 110...