122 lines
3.1 KiB
YAML
122 lines
3.1 KiB
YAML
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# 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 <alexandre.belloni@bootlin.com>
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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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