Based on kernel version 5.13
. Page generated on 2021-06-28 07:05 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | * Analog Devices AD5755 IIO Multi-Channel DAC Linux Driver Required properties: - compatible: Has to contain one of the following: adi,ad5755 adi,ad5755-1 adi,ad5757 adi,ad5735 adi,ad5737 - reg: spi chip select number for the device - spi-cpha or spi-cpol: is the only modes that is supported Recommended properties: - spi-max-frequency: Definition as per Documentation/devicetree/bindings/spi/spi-bus.txt Optional properties: See include/dt-bindings/iio/ad5755.h - adi,ext-dc-dc-compenstation-resistor: boolean set if the hardware have an external resistor and thereby bypasses the internal compensation resistor. - adi,dc-dc-phase: Valid values for DC DC Phase control is: 0: All dc-to-dc converters clock on the same edge. 1: Channel A and Channel B clock on the same edge, Channel C and Channel D clock on opposite edges. 2: Channel A and Channel C clock on the same edge, Channel B and Channel D clock on opposite edges. 3: Channel A, Channel B, Channel C, and Channel D clock 90 degrees out of phase from each other. - adi,dc-dc-freq-hz: Valid values for DC DC frequency is [Hz]: 250000 410000 650000 - adi,dc-dc-max-microvolt: Valid values for the maximum allowed Vboost voltage supplied by the dc-to-dc converter is: 23000000 24500000 27000000 29500000 Optional for every channel: - adi,mode: Valid values for DAC modes is: 0: 0 V to 5 V voltage range. 1: 0 V to 10 V voltage range. 2: Plus minus 5 V voltage range. 3: Plus minus 10 V voltage range. 4: 4 mA to 20 mA current range. 5: 0 mA to 20 mA current range. 6: 0 mA to 24 mA current range. - adi,ext-current-sense-resistor: boolean set if the hardware a external current sense resistor. - adi,enable-voltage-overrange: boolean enable voltage overrange - adi,slew: Array of slewrate settings should contain 3 fields: 1: Should be either 0 or 1 in order to enable or disable slewrate. 2: Slew rate settings: Valid values for the slew rate update frequency: 64000 32000 16000 8000 4000 2000 1000 500 250 125 64 32 16 8 4 0 3: Slew step size: Valid values for the step size LSBs: 1 2 4 16 32 64 128 256 Example: dac@0 { #address-cells = <1>; #size-cells = <0>; compatible = "adi,ad5755"; reg = <0>; spi-max-frequency = <1000000>; spi-cpha; adi,dc-dc-phase = <0>; adi,dc-dc-freq-hz = <410000>; adi,dc-dc-max-microvolt = <23000000>; channel@0 { reg = <0>; adi,mode = <4>; adi,ext-current-sense-resistor; adi,slew = <0 64000 1>; }; channel@1 { reg = <1>; adi,mode = <4>; adi,ext-current-sense-resistor; adi,slew = <0 64000 1>; }; channel@2 { reg = <2>; adi,mode = <4>; adi,ext-current-sense-resistor; adi,slew = <0 64000 1>; }; channel@3 { reg = <3>; adi,mode = <4>; adi,ext-current-sense-resistor; adi,slew = <0 64000 1>; }; }; |