1416f882cSBeniamin Bia# SPDX-License-Identifier: GPL-2.0 2416f882cSBeniamin Bia%YAML 1.2 3416f882cSBeniamin Bia--- 4416f882cSBeniamin Bia$id: http://devicetree.org/schemas/iio/adc/adi,ad7606.yaml# 5416f882cSBeniamin Bia$schema: http://devicetree.org/meta-schemas/core.yaml# 6416f882cSBeniamin Bia 7416f882cSBeniamin Biatitle: Analog Devices AD7606 Simultaneous Sampling ADC 8416f882cSBeniamin Bia 9416f882cSBeniamin Biamaintainers: 10416f882cSBeniamin Bia - Beniamin Bia <beniamin.bia@analog.com> 11416f882cSBeniamin Bia - Stefan Popa <stefan.popa@analog.com> 12416f882cSBeniamin Bia 13416f882cSBeniamin Biadescription: | 14416f882cSBeniamin Bia Analog Devices AD7606 Simultaneous Sampling ADC 15416f882cSBeniamin Bia https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf 166b4d6822SBeniamin Bia https://www.analog.com/media/en/technical-documentation/data-sheets/AD7606B.pdf 17416f882cSBeniamin Bia https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf 18416f882cSBeniamin Bia 19416f882cSBeniamin Biaproperties: 20416f882cSBeniamin Bia compatible: 21416f882cSBeniamin Bia enum: 22416f882cSBeniamin Bia - adi,ad7605-4 23416f882cSBeniamin Bia - adi,ad7606-8 24416f882cSBeniamin Bia - adi,ad7606-6 25416f882cSBeniamin Bia - adi,ad7606-4 266b4d6822SBeniamin Bia - adi,ad7606b 27416f882cSBeniamin Bia - adi,ad7616 28416f882cSBeniamin Bia 29416f882cSBeniamin Bia reg: 30416f882cSBeniamin Bia maxItems: 1 31416f882cSBeniamin Bia 32416f882cSBeniamin Bia spi-cpha: true 33416f882cSBeniamin Bia 34*f3dde260SRob Herring avcc-supply: true 35416f882cSBeniamin Bia 36416f882cSBeniamin Bia interrupts: 37416f882cSBeniamin Bia maxItems: 1 38416f882cSBeniamin Bia 39416f882cSBeniamin Bia adi,conversion-start-gpios: 40416f882cSBeniamin Bia description: 41416f882cSBeniamin Bia Must be the device tree identifier of the CONVST pin. 42416f882cSBeniamin Bia This logic input is used to initiate conversions on the analog 43416f882cSBeniamin Bia input channels. As the line is active high, it should be marked 44416f882cSBeniamin Bia GPIO_ACTIVE_HIGH. 45416f882cSBeniamin Bia maxItems: 1 46416f882cSBeniamin Bia 47416f882cSBeniamin Bia reset-gpios: 48416f882cSBeniamin Bia description: 49416f882cSBeniamin Bia Must be the device tree identifier of the RESET pin. If specified, 50416f882cSBeniamin Bia it will be asserted during driver probe. As the line is active high, 51416f882cSBeniamin Bia it should be marked GPIO_ACTIVE_HIGH. 52416f882cSBeniamin Bia maxItems: 1 53416f882cSBeniamin Bia 54416f882cSBeniamin Bia standby-gpios: 55416f882cSBeniamin Bia description: 56416f882cSBeniamin Bia Must be the device tree identifier of the STBY pin. This pin is used 57416f882cSBeniamin Bia to place the AD7606 into one of two power-down modes, Standby mode or 58416f882cSBeniamin Bia Shutdown mode. As the line is active low, it should be marked 59416f882cSBeniamin Bia GPIO_ACTIVE_LOW. 60416f882cSBeniamin Bia maxItems: 1 61416f882cSBeniamin Bia 62416f882cSBeniamin Bia adi,first-data-gpios: 63416f882cSBeniamin Bia description: 64416f882cSBeniamin Bia Must be the device tree identifier of the FRSTDATA pin. 65416f882cSBeniamin Bia The FRSTDATA output indicates when the first channel, V1, is 66416f882cSBeniamin Bia being read back on either the parallel, byte or serial interface. 67416f882cSBeniamin Bia As the line is active high, it should be marked GPIO_ACTIVE_HIGH. 68416f882cSBeniamin Bia maxItems: 1 69416f882cSBeniamin Bia 70416f882cSBeniamin Bia adi,range-gpios: 71416f882cSBeniamin Bia description: 72416f882cSBeniamin Bia Must be the device tree identifier of the RANGE pin. The polarity on 73416f882cSBeniamin Bia this pin determines the input range of the analog input channels. If 74416f882cSBeniamin Bia this pin is tied to a logic high, the analog input range is ±10V for 75416f882cSBeniamin Bia all channels. If this pin is tied to a logic low, the analog input range 76416f882cSBeniamin Bia is ±5V for all channels. As the line is active high, it should be marked 77416f882cSBeniamin Bia GPIO_ACTIVE_HIGH. 78416f882cSBeniamin Bia maxItems: 1 79416f882cSBeniamin Bia 80416f882cSBeniamin Bia adi,oversampling-ratio-gpios: 81416f882cSBeniamin Bia description: 82416f882cSBeniamin Bia Must be the device tree identifier of the over-sampling 83416f882cSBeniamin Bia mode pins. As the line is active high, it should be marked 84416f882cSBeniamin Bia GPIO_ACTIVE_HIGH. 85416f882cSBeniamin Bia maxItems: 1 86416f882cSBeniamin Bia 87416f882cSBeniamin Bia adi,sw-mode: 88416f882cSBeniamin Bia description: 896b4d6822SBeniamin Bia Software mode of operation, so far available only for ad7616 and ad7606b. 90416f882cSBeniamin Bia It is enabled when all three oversampling mode pins are connected to 91416f882cSBeniamin Bia high level. The device is configured by the corresponding registers. If the 92416f882cSBeniamin Bia adi,oversampling-ratio-gpios property is defined, then the driver will set the 93416f882cSBeniamin Bia oversampling gpios to high. Otherwise, it is assumed that the pins are hardwired 94416f882cSBeniamin Bia to VDD. 95416f882cSBeniamin Bia type: boolean 96416f882cSBeniamin Bia 97416f882cSBeniamin Biarequired: 98416f882cSBeniamin Bia - compatible 99416f882cSBeniamin Bia - reg 100416f882cSBeniamin Bia - spi-cpha 101416f882cSBeniamin Bia - avcc-supply 102416f882cSBeniamin Bia - interrupts 103416f882cSBeniamin Bia - adi,conversion-start-gpios 104416f882cSBeniamin Bia 105416f882cSBeniamin Biaexamples: 106416f882cSBeniamin Bia - | 107416f882cSBeniamin Bia #include <dt-bindings/gpio/gpio.h> 108416f882cSBeniamin Bia #include <dt-bindings/interrupt-controller/irq.h> 109416f882cSBeniamin Bia spi0 { 110416f882cSBeniamin Bia #address-cells = <1>; 111416f882cSBeniamin Bia #size-cells = <0>; 112416f882cSBeniamin Bia 113416f882cSBeniamin Bia adc@0 { 114416f882cSBeniamin Bia compatible = "adi,ad7606-8"; 115416f882cSBeniamin Bia reg = <0>; 116416f882cSBeniamin Bia spi-max-frequency = <1000000>; 117416f882cSBeniamin Bia spi-cpol; 118416f882cSBeniamin Bia spi-cpha; 119416f882cSBeniamin Bia 120416f882cSBeniamin Bia avcc-supply = <&adc_vref>; 121416f882cSBeniamin Bia 122416f882cSBeniamin Bia interrupts = <25 IRQ_TYPE_EDGE_FALLING>; 123416f882cSBeniamin Bia interrupt-parent = <&gpio>; 124416f882cSBeniamin Bia 125416f882cSBeniamin Bia adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>; 126416f882cSBeniamin Bia reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>; 127416f882cSBeniamin Bia adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>; 128416f882cSBeniamin Bia adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH 129416f882cSBeniamin Bia &gpio 23 GPIO_ACTIVE_HIGH 130416f882cSBeniamin Bia &gpio 26 GPIO_ACTIVE_HIGH>; 131416f882cSBeniamin Bia standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>; 132416f882cSBeniamin Bia adi,sw-mode; 133416f882cSBeniamin Bia }; 134416f882cSBeniamin Bia }; 135416f882cSBeniamin Bia... 136