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-* AT91's Analog to Digital Converter (ADC)
-
-Required properties:
- - compatible: Should be "atmel,at91sam9260-adc"
- - reg: Should contain ADC registers location and length
- - interrupts: Should contain the IRQ line for the ADC
- - atmel,adc-channel-base: Offset of the first channel data register
- - atmel,adc-channels-used: Bitmask of the channels muxed and enable for this
- device
- - atmel,adc-drdy-mask: Mask of the DRDY interruption in the ADC
- - atmel,adc-num-channels: Number of channels available in the ADC
- - atmel,adc-startup-time: Startup Time of the ADC in microseconds as
- defined in the datasheet
- - atmel,adc-status-register: Offset of the Interrupt Status Register
- - atmel,adc-trigger-register: Offset of the Trigger Register
- - atmel,adc-vref: Reference voltage in millivolts for the conversions
-
-Optional properties:
- - atmel,adc-use-external: Boolean to enable of external triggers
-
-Optional trigger Nodes:
- - Required properties:
- * trigger-name: Name of the trigger exposed to the user
- * trigger-value: Value to put in the Trigger register
- to activate this trigger
- - Optional properties:
- * trigger-external: Is the trigger an external trigger?
-
-Examples:
-adc0: adc@fffb0000 {
- compatible = "atmel,at91sam9260-adc";
- reg = <0xfffb0000 0x100>;
- interrupts = <20 4>;
- atmel,adc-channel-base = <0x30>;
- atmel,adc-channels-used = <0xff>;
- atmel,adc-drdy-mask = <0x10000>;
- atmel,adc-num-channels = <8>;
- atmel,adc-startup-time = <40>;
- atmel,adc-status-register = <0x1c>;
- atmel,adc-trigger-register = <0x08>;
- atmel,adc-use-external;
- atmel,adc-vref = <3300>;
-
- trigger@0 {
- trigger-name = "external-rising";
- trigger-value = <0x1>;
- trigger-external;
- };
- trigger@1 {
- trigger-name = "external-falling";
- trigger-value = <0x2>;
- trigger-external;
- };
-
- trigger@2 {
- trigger-name = "external-any";
- trigger-value = <0x3>;
- trigger-external;
- };
-
- trigger@3 {
- trigger-name = "continuous";
- trigger-value = <0x6>;
- };
-};