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121 lines
3.1 KiB
121 lines
3.1 KiB
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/iio/adc/atmel,sama9260-adc.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: AT91 sama9260 and similar Analog to Digital Converter (ADC) |
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maintainers: |
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- Alexandre Belloni <[email protected]> |
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properties: |
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compatible: |
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enum: |
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- atmel,at91sam9260-adc |
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- atmel,at91sam9rl-adc |
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- atmel,at91sam9g45-adc |
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- atmel,at91sam9x5-adc |
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- atmel,at91sama5d3-adc |
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reg: |
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maxItems: 1 |
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interrupts: |
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maxItems: 1 |
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clocks: |
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minItems: 2 |
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maxItems: 2 |
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clock-names: |
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items: |
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- const: adc_clk |
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- const: adc_op_clk |
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atmel,adc-channels-used: |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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description: Bitmask of the channels muxed and enabled for this device |
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atmel,adc-startup-time: |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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description: |
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Startup Time of the ADC in microseconds as defined in the datasheet |
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atmel,adc-vref: |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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description: Reference voltage in millivolts for the conversions |
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atmel,adc-use-external-triggers: |
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$ref: /schemas/types.yaml#/definitions/flag |
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description: Enable the external triggers |
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atmel,adc-use-res: |
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$ref: /schemas/types.yaml#/definitions/string |
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description: |
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String corresponding to an identifier from atmel,adc-res-names property. |
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If not specified, the highest resolution will be used. |
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enum: |
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- "lowres" |
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- "highres" |
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atmel,adc-sleep-mode: |
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$ref: /schemas/types.yaml#/definitions/flag |
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description: Enable sleep mode when no conversion |
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atmel,adc-sample-hold-time: |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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description: Sample and Hold Time in microseconds |
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atmel,adc-ts-wires: |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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description: | |
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Number of touchscreen wires. Must be set to enable touchscreen. |
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NOTE: when adc touchscreen is enabled, the adc hardware trigger will be |
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disabled. Since touchscreen will occupy the trigger register. |
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enum: |
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- 4 |
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- 5 |
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atmel,adc-ts-pressure-threshold: |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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description: |
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Pressure threshold for touchscreen. |
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"#io-channel-cells": |
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const: 1 |
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additionalProperties: false |
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required: |
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- compatible |
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- reg |
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- interrupts |
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- clocks |
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- clock-names |
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- atmel,adc-channels-used |
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- atmel,adc-startup-time |
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- atmel,adc-vref |
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examples: |
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- | |
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#include <dt-bindings/dma/at91.h> |
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#include <dt-bindings/interrupt-controller/irq.h> |
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soc { |
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#address-cells = <1>; |
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#size-cells = <1>; |
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adc@fffb0000 { |
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compatible = "atmel,at91sam9260-adc"; |
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reg = <0xfffb0000 0x100>; |
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interrupts = <20 IRQ_TYPE_LEVEL_HIGH 0>; |
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clocks = <&adc_clk>, <&adc_op_clk>; |
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clock-names = "adc_clk", "adc_op_clk"; |
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atmel,adc-channels-used = <0xff>; |
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atmel,adc-startup-time = <40>; |
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atmel,adc-use-external-triggers; |
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atmel,adc-vref = <3300>; |
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atmel,adc-use-res = "lowres"; |
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}; |
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}; |
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...
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