1 * AT91's Analog to Digital Converter (ADC)
4 - compatible: Should be "atmel,at91sam9260-adc"
5 - reg: Should contain ADC registers location and length
6 - interrupts: Should contain the IRQ line for the ADC
7 - atmel,adc-channel-base: Offset of the first channel data register
8 - atmel,adc-channels-used: Bitmask of the channels muxed and enable for this
10 - atmel,adc-drdy-mask: Mask of the DRDY interruption in the ADC
11 - atmel,adc-num-channels: Number of channels available in the ADC
12 - atmel,adc-startup-time: Startup Time of the ADC in microseconds as
13 defined in the datasheet
14 - atmel,adc-status-register: Offset of the Interrupt Status Register
15 - atmel,adc-trigger-register: Offset of the Trigger Register
16 - atmel,adc-vref: Reference voltage in millivolts for the conversions
17 - atmel,adc-res: List of resolution in bits supported by the ADC. List size
19 - atmel,adc-res-names: Contains one identifier string for each resolution
20 in atmel,adc-res property. "lowres" and "highres"
21 identifiers are required.
24 - atmel,adc-use-external: Boolean to enable of external triggers
25 - atmel,adc-use-res: String corresponding to an identifier from
26 atmel,adc-res-names property. If not specified, the highest
27 resolution will be used.
28 - atmel,adc-sleep-mode: Boolean to enable sleep mode when no conversion
29 - atmel,adc-sample-hold-time: Sample and Hold Time in microseconds
31 Optional trigger Nodes:
32 - Required properties:
33 * trigger-name: Name of the trigger exposed to the user
34 * trigger-value: Value to put in the Trigger register
35 to activate this trigger
36 - Optional properties:
37 * trigger-external: Is the trigger an external trigger?
41 compatible = "atmel,at91sam9260-adc";
42 reg = <0xfffb0000 0x100>;
44 atmel,adc-channel-base = <0x30>;
45 atmel,adc-channels-used = <0xff>;
46 atmel,adc-drdy-mask = <0x10000>;
47 atmel,adc-num-channels = <8>;
48 atmel,adc-startup-time = <40>;
49 atmel,adc-status-register = <0x1c>;
50 atmel,adc-trigger-register = <0x08>;
51 atmel,adc-use-external;
52 atmel,adc-vref = <3300>;
53 atmel,adc-res = <8 10>;
54 atmel,adc-res-names = "lowres", "highres";
55 atmel,adc-use-res = "lowres";
58 trigger-name = "external-rising";
59 trigger-value = <0x1>;
63 trigger-name = "external-falling";
64 trigger-value = <0x2>;
69 trigger-name = "external-any";
70 trigger-value = <0x3>;
75 trigger-name = "continuous";
76 trigger-value = <0x6>;