+++ /dev/null
-Analog Devices AD7606 Simultaneous Sampling ADC
-
-Required properties for the AD7606:
-
-- compatible: Must be one of
- * "adi,ad7605-4"
- * "adi,ad7606-8"
- * "adi,ad7606-6"
- * "adi,ad7606-4"
- * "adi,ad7616"
-- reg: SPI chip select number for the device
-- spi-max-frequency: Max SPI frequency to use
- see: Documentation/devicetree/bindings/spi/spi-bus.txt
-- spi-cpha: See Documentation/devicetree/bindings/spi/spi-bus.txt
-- avcc-supply: phandle to the Avcc power supply
-- interrupts: IRQ line for the ADC
- see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
-- adi,conversion-start-gpios: must be the device tree identifier of the CONVST pin.
- This logic input is used to initiate conversions on the analog
- input channels. As the line is active high, it should be marked
- GPIO_ACTIVE_HIGH.
-
-Optional properties:
-
-- reset-gpios: must be the device tree identifier of the RESET pin. If specified,
- it will be asserted during driver probe. As the line is active high,
- it should be marked GPIO_ACTIVE_HIGH.
-- standby-gpios: must be the device tree identifier of the STBY pin. This pin is used
- to place the AD7606 into one of two power-down modes, Standby mode or
- Shutdown mode. As the line is active low, it should be marked
- GPIO_ACTIVE_LOW.
-- adi,first-data-gpios: must be the device tree identifier of the FRSTDATA pin.
- The FRSTDATA output indicates when the first channel, V1, is
- being read back on either the parallel, byte or serial interface.
- As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
-- adi,range-gpios: must be the device tree identifier of the RANGE pin. The polarity on
- this pin determines the input range of the analog input channels. If
- this pin is tied to a logic high, the analog input range is ±10V for
- all channels. If this pin is tied to a logic low, the analog input range
- is ±5V for all channels. As the line is active high, it should be marked
- GPIO_ACTIVE_HIGH.
-- adi,oversampling-ratio-gpios: must be the device tree identifier of the over-sampling
- mode pins. As the line is active high, it should be marked
- GPIO_ACTIVE_HIGH.
-
-Example:
-
- adc@0 {
- compatible = "adi,ad7606-8";
- reg = <0>;
- spi-max-frequency = <1000000>;
- spi-cpol;
-
- avcc-supply = <&adc_vref>;
-
- interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
- interrupt-parent = <&gpio>;
-
- adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
- reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
- adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
- adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH
- &gpio 23 GPIO_ACTIVE_HIGH
- &gpio 26 GPIO_ACTIVE_HIGH>;
- standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
- };
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad7606.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD7606 Simultaneous Sampling ADC
+
+maintainers:
+ - Beniamin Bia <beniamin.bia@analog.com>
+ - Stefan Popa <stefan.popa@analog.com>
+
+description: |
+ Analog Devices AD7606 Simultaneous Sampling ADC
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf
+
+properties:
+ compatible:
+ enum:
+ - adi,ad7605-4
+ - adi,ad7606-8
+ - adi,ad7606-6
+ - adi,ad7606-4
+ - adi,ad7616
+
+ reg:
+ maxItems: 1
+
+ spi-cpha: true
+
+ avcc-supply:
+ description:
+ Phandle to the Avcc power supply
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ adi,conversion-start-gpios:
+ description:
+ Must be the device tree identifier of the CONVST pin.
+ This logic input is used to initiate conversions on the analog
+ input channels. As the line is active high, it should be marked
+ GPIO_ACTIVE_HIGH.
+ maxItems: 1
+
+ reset-gpios:
+ description:
+ Must be the device tree identifier of the RESET pin. If specified,
+ it will be asserted during driver probe. As the line is active high,
+ it should be marked GPIO_ACTIVE_HIGH.
+ maxItems: 1
+
+ standby-gpios:
+ description:
+ Must be the device tree identifier of the STBY pin. This pin is used
+ to place the AD7606 into one of two power-down modes, Standby mode or
+ Shutdown mode. As the line is active low, it should be marked
+ GPIO_ACTIVE_LOW.
+ maxItems: 1
+
+ adi,first-data-gpios:
+ description:
+ Must be the device tree identifier of the FRSTDATA pin.
+ The FRSTDATA output indicates when the first channel, V1, is
+ being read back on either the parallel, byte or serial interface.
+ As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
+ maxItems: 1
+
+ adi,range-gpios:
+ description:
+ Must be the device tree identifier of the RANGE pin. The polarity on
+ this pin determines the input range of the analog input channels. If
+ this pin is tied to a logic high, the analog input range is ±10V for
+ all channels. If this pin is tied to a logic low, the analog input range
+ is ±5V for all channels. As the line is active high, it should be marked
+ GPIO_ACTIVE_HIGH.
+ maxItems: 1
+
+ adi,oversampling-ratio-gpios:
+ description:
+ Must be the device tree identifier of the over-sampling
+ mode pins. As the line is active high, it should be marked
+ GPIO_ACTIVE_HIGH.
+ maxItems: 1
+
+ adi,sw-mode:
+ description:
+ Software mode of operation, so far available only for ad7616.
+ It is enabled when all three oversampling mode pins are connected to
+ high level. The device is configured by the corresponding registers. If the
+ adi,oversampling-ratio-gpios property is defined, then the driver will set the
+ oversampling gpios to high. Otherwise, it is assumed that the pins are hardwired
+ to VDD.
+ type: boolean
+
+required:
+ - compatible
+ - reg
+ - spi-cpha
+ - avcc-supply
+ - interrupts
+ - adi,conversion-start-gpios
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ spi0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "adi,ad7606-8";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+ spi-cpha;
+
+ avcc-supply = <&adc_vref>;
+
+ interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-parent = <&gpio>;
+
+ adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
+ adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
+ adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH
+ &gpio 23 GPIO_ACTIVE_HIGH
+ &gpio 26 GPIO_ACTIVE_HIGH>;
+ standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
+ adi,sw-mode;
+ };
+ };
+...
projects / linux-2.6-block.git / commitdiff