1# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/iio/dac/lltc,ltc2632.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Linear Technology LTC263x 12-/10-/8-Bit Rail-to-Rail DAC 8 9maintainers: 10 - Michael Hennerich <michael.hennerich@analog.com> 11 12description: | 13 Bindings for the Linear Technology LTC2632/2634/2636 DAC 14 Datasheet can be found here: https://www.analog.com/media/en/technical-documentation/data-sheets/LTC263[246].pdf 15 16properties: 17 compatible: 18 enum: 19 - lltc,ltc2632-l12 20 - lltc,ltc2632-l10 21 - lltc,ltc2632-l8 22 - lltc,ltc2632-h12 23 - lltc,ltc2632-h10 24 - lltc,ltc2632-h8 25 - lltc,ltc2634-l12 26 - lltc,ltc2634-l10 27 - lltc,ltc2634-l8 28 - lltc,ltc2634-h12 29 - lltc,ltc2634-h10 30 - lltc,ltc2634-h8 31 - lltc,ltc2636-l12 32 - lltc,ltc2636-l10 33 - lltc,ltc2636-l8 34 - lltc,ltc2636-h12 35 - lltc,ltc2636-h10 36 - lltc,ltc2636-h8 37 38 reg: 39 maxItems: 1 40 41 spi-max-frequency: 42 maximum: 2000000 43 44 vref-supply: 45 description: 46 Phandle to the external reference voltage supply. This should 47 only be set if there is an external reference voltage connected to the VREF 48 pin. If the property is not set the internal reference is used. 49 50required: 51 - compatible 52 - reg 53 54additionalProperties: false 55 56examples: 57 - | 58 vref: regulator-vref { 59 compatible = "regulator-fixed"; 60 regulator-name = "vref-ltc2632"; 61 regulator-min-microvolt = <1250000>; 62 regulator-max-microvolt = <1250000>; 63 regulator-always-on; 64 }; 65 66 spi { 67 #address-cells = <1>; 68 #size-cells = <0>; 69 70 dac@0 { 71 compatible = "lltc,ltc2632-l12"; 72 reg = <0>; /* CS0 */ 73 spi-max-frequency = <1000000>; 74 vref-supply = <&vref>; 75 }; 76 }; 77... 78