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dt-bindings: iio: dac: Add adi,ltc2664.yaml
Add documentation for ltc2664. Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Co-developed-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com> Link: https://patch.msgid.link/20240718051834.32270-5-kimseer.paller@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Kim Seer Paller
Jonathan Cameron
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commit
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181
Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml
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181
Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/dac/adi,ltc2664.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices LTC2664 DAC
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maintainers:
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- Michael Hennerich <michael.hennerich@analog.com>
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- Kim Seer Paller <kimseer.paller@analog.com>
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description: |
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Analog Devices LTC2664 4 channel, 12-/16-Bit, +-10V DAC
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https://www.analog.com/media/en/technical-documentation/data-sheets/2664fa.pdf
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properties:
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compatible:
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enum:
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- adi,ltc2664
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reg:
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maxItems: 1
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spi-max-frequency:
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maximum: 50000000
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vcc-supply:
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description: Analog Supply Voltage Input.
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v-pos-supply:
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description: Positive Supply Voltage Input.
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v-neg-supply:
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description: Negative Supply Voltage Input.
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iovcc-supply:
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description: Digital Input/Output Supply Voltage.
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ref-supply:
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description:
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Reference Input/Output. The voltage at the REF pin sets the full-scale
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range of all channels. If not provided the internal reference is used and
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also provided on the VREF pin.
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reset-gpios:
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description:
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Active-low Asynchronous Clear Input. A logic low at this level-triggered
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input clears the part to the reset code and range determined by the
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hardwired option chosen using the MSPAN pins. The control registers are
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cleared to zero.
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maxItems: 1
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adi,manual-span-operation-config:
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description:
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This property must mimic the MSPAN pin configurations. By tying the MSPAN
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pins (MSP2, MSP1 and MSP0) to GND and/or VCC, any output range can be
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hardware-configured with different mid-scale or zero-scale reset options.
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The hardware configuration is latched during power on reset for proper
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operation.
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0 - MPS2=GND, MPS1=GND, MSP0=GND (+-10V, reset to 0V)
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1 - MPS2=GND, MPS1=GND, MSP0=VCC (+-5V, reset to 0V)
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2 - MPS2=GND, MPS1=VCC, MSP0=GND (+-2.5V, reset to 0V)
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3 - MPS2=GND, MPS1=VCC, MSP0=VCC (0V to 10, reset to 0V)
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4 - MPS2=VCC, MPS1=GND, MSP0=GND (0V to 10V, reset to 5V)
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5 - MPS2=VCC, MPS1=GND, MSP0=VCC (0V to 5V, reset to 0V)
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6 - MPS2=VCC, MPS1=VCC, MSP0=GND (0V to 5V, reset to 2.5V)
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7 - MPS2=VCC, MPS1=VCC, MSP0=VCC (0V to 5V, reset to 0V, enables SoftSpan)
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 2, 3, 4, 5, 6, 7]
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default: 7
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io-channels:
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description:
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ADC channel to monitor voltages and temperature at the MUXOUT pin.
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maxItems: 1
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'#address-cells':
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const: 1
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'#size-cells':
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const: 0
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patternProperties:
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"^channel@[0-3]$":
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$ref: dac.yaml
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type: object
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additionalProperties: false
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properties:
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reg:
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description: The channel number representing the DAC output channel.
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maximum: 3
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adi,toggle-mode:
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description:
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Set the channel as a toggle enabled channel. Toggle operation enables
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fast switching of a DAC output between two different DAC codes without
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any SPI transaction.
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type: boolean
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output-range-microvolt:
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description:
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This property is only allowed when SoftSpan is enabled. If not present,
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[0, 5000000] is the default output range.
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oneOf:
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- items:
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- const: 0
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- enum: [5000000, 10000000]
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- items:
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- const: -5000000
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- const: 5000000
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- items:
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- const: -10000000
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- const: 10000000
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- items:
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- const: -2500000
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- const: 2500000
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required:
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- reg
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allOf:
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- if:
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not:
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properties:
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adi,manual-span-operation-config:
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const: 7
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then:
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patternProperties:
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"^channel@[0-3]$":
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properties:
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output-range-microvolt: false
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required:
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- compatible
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- reg
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- spi-max-frequency
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- vcc-supply
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- iovcc-supply
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- v-pos-supply
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- v-neg-supply
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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additionalProperties: false
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examples:
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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dac@0 {
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compatible = "adi,ltc2664";
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reg = <0>;
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spi-max-frequency = <10000000>;
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vcc-supply = <&vcc>;
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iovcc-supply = <&vcc>;
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ref-supply = <&vref>;
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v-pos-supply = <&vpos>;
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v-neg-supply = <&vneg>;
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io-channels = <&adc 0>;
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#address-cells = <1>;
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#size-cells = <0>;
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channel@0 {
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reg = <0>;
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adi,toggle-mode;
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output-range-microvolt = <(-10000000) 10000000>;
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};
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channel@1 {
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reg = <1>;
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output-range-microvolt= <0 10000000>;
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};
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};
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};
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...
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@ -13273,6 +13273,14 @@ S: Maintained
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F: Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml
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F: drivers/iio/dac/ltc1660.c
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LTC2664 IIO DAC DRIVER
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M: Michael Hennerich <michael.hennerich@analog.com>
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M: Kim Seer Paller <kimseer.paller@analog.com>
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L: linux-iio@vger.kernel.org
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S: Supported
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W: https://ez.analog.com/linux-software-drivers
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F: Documentation/devicetree/bindings/iio/dac/adi,ltc2664.yaml
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LTC2688 IIO DAC DRIVER
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M: Nuno Sá <nuno.sa@analog.com>
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L: linux-iio@vger.kernel.org
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