adi,ltc2688.yaml (3847B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/iio/dac/adi,ltc2688.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Analog Devices LTC2688 DAC 8 9maintainers: 10 - Nuno Sá <nuno.sa@analog.com> 11 12description: | 13 Analog Devices LTC2688 16 channel, 16 bit, +-15V DAC 14 https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2688.pdf 15 16properties: 17 compatible: 18 enum: 19 - adi,ltc2688 20 21 reg: 22 maxItems: 1 23 24 vcc-supply: 25 description: Analog Supply Voltage Input. 26 27 iovcc-supply: 28 description: Digital Input/Output Supply Voltage. 29 30 vref-supply: 31 description: 32 Reference Input/Output. The voltage at the REF pin sets the full-scale 33 range of all channels. If not provided the internal reference is used and 34 also provided on the VREF pin". 35 36 clr-gpios: 37 description: 38 If specified, it will be asserted during driver probe. As the line is 39 active low, it should be marked GPIO_ACTIVE_LOW. 40 maxItems: 1 41 42 '#address-cells': 43 const: 1 44 45 '#size-cells': 46 const: 0 47 48patternProperties: 49 "^channel@([0-9]|1[0-5])$": 50 type: object 51 52 properties: 53 reg: 54 description: The channel number representing the DAC output channel. 55 maximum: 15 56 57 adi,toggle-mode: 58 description: 59 Set the channel as a toggle enabled channel. Toggle operation enables 60 fast switching of a DAC output between two different DAC codes without 61 any SPI transaction. 62 type: boolean 63 64 adi,output-range-microvolt: 65 description: Specify the channel output full scale range. 66 oneOf: 67 - items: 68 - const: 0 69 - enum: [5000000, 10000000] 70 - items: 71 - const: -5000000 72 - const: 5000000 73 - items: 74 - const: -10000000 75 - const: 10000000 76 - items: 77 - const: -15000000 78 - const: 15000000 79 80 adi,overrange: 81 description: Enable 5% overrange over the selected full scale range. 82 type: boolean 83 84 clocks: 85 maxItems: 1 86 87 adi,toggle-dither-input: 88 description: 89 Selects the TGPx pin to be associated with this channel. This setting 90 only makes sense for toggle or dither enabled channels. If 91 @adi,toggle-mode is not set and this property is given, the channel is 92 assumed to be a dither capable channel. Note that multiple channels 93 can be mapped to the same pin. If this setting is given, the 94 respective @clock must also be provided. Mappings between this and 95 input pins 96 0 - TGP1 97 1 - TGP2 98 2 - TGP3 99 $ref: /schemas/types.yaml#/definitions/uint32 100 enum: [0, 1, 2] 101 102 dependencies: 103 adi,toggle-dither-input: [ clocks ] 104 105 required: 106 - reg 107 108required: 109 - compatible 110 - reg 111 112additionalProperties: false 113 114examples: 115 - | 116 117 spi { 118 #address-cells = <1>; 119 #size-cells = <0>; 120 ltc2688: ltc2688@0 { 121 compatible = "adi,ltc2688"; 122 reg = <0>; 123 124 vcc-supply = <&vcc>; 125 iovcc-supply = <&vcc>; 126 vref-supply = <&vref>; 127 128 #address-cells = <1>; 129 #size-cells = <0>; 130 channel@0 { 131 reg = <0>; 132 adi,toggle-mode; 133 adi,overrange; 134 }; 135 136 channel@1 { 137 reg = <1>; 138 adi,output-range-microvolt = <0 10000000>; 139 140 clocks = <&clock_tgp3>; 141 adi,toggle-dither-input = <2>; 142 }; 143 }; 144 }; 145 146...