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Diffstat (limited to 'Documentation/devicetree/bindings/iio/adc/at91_adc.txt')
-rw-r--r-- | Documentation/devicetree/bindings/iio/adc/at91_adc.txt | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/at91_adc.txt b/Documentation/devicetree/bindings/iio/adc/at91_adc.txt deleted file mode 100644 index da393ac5c05f..000000000000 --- a/Documentation/devicetree/bindings/iio/adc/at91_adc.txt +++ /dev/null @@ -1,78 +0,0 @@ -* AT91's Analog to Digital Converter (ADC) - -Required properties: - - compatible: Should be "atmel,<chip>-adc" - <chip> can be "at91sam9260", "at91sam9g45", "at91sam9x5" or "sama5d3" - - reg: Should contain ADC registers location and length - - interrupts: Should contain the IRQ line for the ADC - - clock-names: tuple listing input clock names. - Required elements: "adc_clk", "adc_op_clk". - - clocks: phandles to input clocks. - - atmel,adc-channels-used: Bitmask of the channels muxed and enabled for this - device - - atmel,adc-startup-time: Startup Time of the ADC in microseconds as - defined in the datasheet - - atmel,adc-vref: Reference voltage in millivolts for the conversions - -Optional properties: - - atmel,adc-use-external-triggers: Boolean to enable the external triggers - - atmel,adc-use-res: String selecting the resolution, can be "lowres" or - "highres". If not specified, the highest resolution will - be used. - - atmel,adc-sleep-mode: Boolean to enable sleep mode when no conversion - - atmel,adc-sample-hold-time: Sample and Hold Time in microseconds - - atmel,adc-ts-wires: Number of touchscreen wires. Should be 4 or 5. If this - value is set, then the adc driver will enable touchscreen - support. - NOTE: when adc touchscreen is enabled, the adc hardware trigger will be - disabled. Since touchscreen will occupy the trigger register. - - atmel,adc-ts-pressure-threshold: a pressure threshold for touchscreen. It - makes touch detection more precise. - -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 { - #address-cells = <1>; - #size-cells = <0>; - compatible = "atmel,at91sam9260-adc"; - reg = <0xfffb0000 0x100>; - interrupts = <20 IRQ_TYPE_LEVEL_HIGH 0>; - clocks = <&adc_clk>, <&adc_op_clk>; - clock-names = "adc_clk", "adc_op_clk"; - atmel,adc-channels-used = <0xff>; - atmel,adc-startup-time = <40>; - atmel,adc-use-external-triggers; - atmel,adc-vref = <3300>; - atmel,adc-res = <8 10>; - atmel,adc-res-names = "lowres", "highres"; - atmel,adc-use-res = "lowres"; - - trigger0 { - trigger-name = "external-rising"; - trigger-value = <0x1>; - trigger-external; - }; - trigger1 { - trigger-name = "external-falling"; - trigger-value = <0x2>; - trigger-external; - }; - - trigger2 { - trigger-name = "external-any"; - trigger-value = <0x3>; - trigger-external; - }; - - trigger3 { - trigger-name = "continuous"; - trigger-value = <0x6>; - }; -}; |