+++ /dev/null
-Analog Devices AD5592R/AD5593R DAC/ADC device driver
-
-Required properties for the AD5592R:
- - compatible: Must be "adi,ad5592r"
- - reg: SPI chip select number for the device
- - spi-max-frequency: Max SPI frequency to use (< 30000000)
- - spi-cpol: The AD5592R requires inverse clock polarity (CPOL) mode
-
-Required properties for the AD5593R:
- - compatible: Must be "adi,ad5593r"
- - reg: I2C address of the device
-
-Required properties for all supported chips:
- - #address-cells: Should be 1.
- - #size-cells: Should be 0.
- - channel nodes:
- Each child node represents one channel and has the following
- Required properties:
- * reg: Pin on which this channel is connected to.
- * adi,mode: Mode or function of this channel.
- Macros specifying the valid values
- can be found in <dt-bindings/iio/adi,ad5592r.h>.
-
- The following values are currently supported:
- * CH_MODE_UNUSED (the pin is unused)
- * CH_MODE_ADC (the pin is ADC input)
- * CH_MODE_DAC (the pin is DAC output)
- * CH_MODE_DAC_AND_ADC (the pin is DAC output
- but can be monitored by an ADC, since
- there is no disadvantage this
- this should be considered as the
- preferred DAC mode)
- * CH_MODE_GPIO (the pin is registered
- with GPIOLIB)
- Optional properties:
- * adi,off-state: State of this channel when unused or the
- device gets removed. Macros specifying the
- valid values can be found in
- <dt-bindings/iio/adi,ad5592r.h>.
-
- * CH_OFFSTATE_PULLDOWN (the pin is pulled down)
- * CH_OFFSTATE_OUT_LOW (the pin is output low)
- * CH_OFFSTATE_OUT_HIGH (the pin is output high)
- * CH_OFFSTATE_OUT_TRISTATE (the pin is
- tristated output)
-
-
-Optional properties:
- - vref-supply: Phandle to the external reference voltage supply. This should
- only be set if there is an external reference voltage connected to the VREF
- pin. If the property is not set the internal 2.5V reference is used.
- - reset-gpios : GPIO spec for the RESET pin. If specified, it will be
- asserted during driver probe.
- - gpio-controller: Marks the device node as a GPIO controller.
- - #gpio-cells: Should be 2. The first cell is the GPIO number and the second
- cell specifies GPIO flags, as defined in <dt-bindings/gpio/gpio.h>.
-
-AD5592R Example:
-
- #include <dt-bindings/iio/adi,ad5592r.h>
-
- vref: regulator-vref {
- compatible = "regulator-fixed";
- regulator-name = "vref-ad559x";
- regulator-min-microvolt = <3300000>;
- regulator-max-microvolt = <3300000>;
- regulator-always-on;
- };
-
- ad5592r@0 {
- #size-cells = <0>;
- #address-cells = <1>;
- #gpio-cells = <2>;
- compatible = "adi,ad5592r";
- reg = <0>;
-
- spi-max-frequency = <1000000>;
- spi-cpol;
-
- vref-supply = <&vref>; /* optional */
- reset-gpios = <&gpio0 86 0>; /* optional */
- gpio-controller;
-
- channel@0 {
- reg = <0>;
- adi,mode = <CH_MODE_DAC>;
- };
- channel@1 {
- reg = <1>;
- adi,mode = <CH_MODE_ADC>;
- };
- channel@2 {
- reg = <2>;
- adi,mode = <CH_MODE_DAC_AND_ADC>;
- };
- channel@3 {
- reg = <3>;
- adi,mode = <CH_MODE_DAC_AND_ADC>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- channel@4 {
- reg = <4>;
- adi,mode = <CH_MODE_UNUSED>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- channel@5 {
- reg = <5>;
- adi,mode = <CH_MODE_GPIO>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- channel@6 {
- reg = <6>;
- adi,mode = <CH_MODE_GPIO>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- channel@7 {
- reg = <7>;
- adi,mode = <CH_MODE_GPIO>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- };
-
-AD5593R Example:
-
- #include <dt-bindings/iio/adi,ad5592r.h>
-
- ad5593r@10 {
- #size-cells = <0>;
- #address-cells = <1>;
- #gpio-cells = <2>;
- compatible = "adi,ad5593r";
- reg = <0x10>;
- gpio-controller;
-
- channel@0 {
- reg = <0>;
- adi,mode = <CH_MODE_DAC>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- channel@1 {
- reg = <1>;
- adi,mode = <CH_MODE_ADC>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- channel@2 {
- reg = <2>;
- adi,mode = <CH_MODE_DAC_AND_ADC>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- channel@6 {
- reg = <6>;
- adi,mode = <CH_MODE_GPIO>;
- adi,off-state = <CH_OFFSTATE_PULLDOWN>;
- };
- };
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad5592r.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5592R/AD5593R DAC/ADC
+
+maintainers:
+ - Michael Hennerich <michael.hennerich@analog.com>
+
+properties:
+ compatible:
+ enum:
+ - adi,ad5592r
+ - adi,ad5593r
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 30000000
+
+ spi-cpol: true
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ "#io-channel-cells":
+ const: 1
+
+ vref-supply:
+ description: If not set internal 2.5V reference used.
+
+ reset-gpios:
+ maxItems: 1
+
+ gpio-controller:
+ description: Marks the device node as a GPIO controller.
+
+ "#gpio-cells":
+ const: 2
+ description:
+ The first cell is the GPIO number and the second cell specifies
+ GPIO flags, as defined in <dt-bindings/gpio/gpio.h>.
+
+required:
+ - compatible
+ - reg
+ - "#address-cells"
+ - "#size-cells"
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: adi,ad5592r
+ then:
+ required:
+ - spi-cpol
+ else:
+ properties:
+ spi-cpol: false
+
+additionalProperties: false
+
+patternProperties:
+ "^(channel@)[0-7]$":
+ type: object
+ description: Child node to describe a channel
+ properties:
+ reg:
+ minimum: 0
+ maximum: 7
+
+ adi,mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3, 8]
+ description: |
+ Mode or function of this channel.
+ Macros specifying the valid values can be found in
+ <dt-bindings/iio/adi,ad5592r.h>.
+
+ The following values are currently supported:
+ * CH_MODE_UNUSED (the pin is unused)
+ * CH_MODE_ADC (the pin is ADC input)
+ * CH_MODE_DAC (the pin is DAC output)
+ * CH_MODE_DAC_AND_ADC (the pin is DAC output but can be monitored
+ by an ADC, since there is no disadvantage this should be
+ considered as the preferred DAC mode)
+ * CH_MODE_GPIO (the pin is registered with GPIOLIB)
+
+ adi,off-state:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ description: |
+ State of this channel when unused or the device gets removed.
+ Macros specifying the valid values can be found in
+ <dt-bindings/iio/adi,ad5592r.h>.
+ * CH_OFFSTATE_PULLDOWN (the pin is pulled down)
+ * CH_OFFSTATE_OUT_LOW (the pin is output low)
+ * CH_OFFSTATE_OUT_HIGH (the pin is output high)
+ * CH_OFFSTATE_OUT_TRISTATE (the pin is tristated output)
+
+ required:
+ - reg
+ - adi,mode
+
+ additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/iio/adi,ad5592r.h>
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ addac@0 {
+ compatible = "adi,ad5592r";
+ #size-cells = <0>;
+ #address-cells = <1>;
+ #gpio-cells = <2>;
+ reg = <0>;
+
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+
+ vref-supply = <&vref>;
+ reset-gpios = <&gpio0 86 0>;
+ gpio-controller;
+
+ channel@0 {
+ reg = <0>;
+ adi,mode = <CH_MODE_DAC>;
+ };
+ channel@1 {
+ reg = <1>;
+ adi,mode = <CH_MODE_ADC>;
+ };
+ channel@2 {
+ reg = <2>;
+ adi,mode = <CH_MODE_DAC_AND_ADC>;
+ };
+ channel@3 {
+ reg = <3>;
+ adi,mode = <CH_MODE_DAC_AND_ADC>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ channel@4 {
+ reg = <4>;
+ adi,mode = <CH_MODE_UNUSED>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ channel@5 {
+ reg = <5>;
+ adi,mode = <CH_MODE_GPIO>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ channel@6 {
+ reg = <6>;
+ adi,mode = <CH_MODE_GPIO>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ channel@7 {
+ reg = <7>;
+ adi,mode = <CH_MODE_GPIO>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ };
+ ad5593r@10 {
+ compatible = "adi,ad5593r";
+ #size-cells = <0>;
+ #address-cells = <1>;
+ #gpio-cells = <2>;
+ reg = <0x10>;
+ gpio-controller;
+
+ channel@0 {
+ reg = <0>;
+ adi,mode = <CH_MODE_DAC>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ channel@1 {
+ reg = <1>;
+ adi,mode = <CH_MODE_ADC>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ channel@2 {
+ reg = <2>;
+ adi,mode = <CH_MODE_DAC_AND_ADC>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ channel@6 {
+ reg = <6>;
+ adi,mode = <CH_MODE_GPIO>;
+ adi,off-state = <CH_OFFSTATE_PULLDOWN>;
+ };
+ };
+ };
+...
projects / linux-2.6-microblaze.git / commitdiff