dt-bindings: iio: dac: add MCP4821
Adds support for MCP48xx series of DACs. Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/22244B.pdf #MCP48x1 Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/20002249B.pdf #MCP48x2 Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Anshul Dalal <anshulusr@gmail.com> Link: https://lore.kernel.org/r/20231220151954.154595-1-anshulusr@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
parent
996b2e046a
commit
6b626eee66
@ -0,0 +1,86 @@
|
||||
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
|
||||
%YAML 1.2
|
||||
---
|
||||
$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4821.yaml#
|
||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||
|
||||
title: Microchip MCP4821 and similar DACs
|
||||
|
||||
description: |
|
||||
Supports MCP48x1 (single channel) and MCP48x2 (dual channel) series of DACs.
|
||||
Device supports simplex communication over SPI in Mode 0 and Mode 3.
|
||||
|
||||
+---------+--------------+-------------+
|
||||
| Device | Resolution | Channels |
|
||||
|---------|--------------|-------------|
|
||||
| MCP4801 | 8-bit | 1 |
|
||||
| MCP4802 | 8-bit | 2 |
|
||||
| MCP4811 | 10-bit | 1 |
|
||||
| MCP4812 | 10-bit | 2 |
|
||||
| MCP4821 | 12-bit | 1 |
|
||||
| MCP4822 | 12-bit | 2 |
|
||||
+---------+--------------+-------------+
|
||||
|
||||
Datasheet:
|
||||
MCP48x1: https://ww1.microchip.com/downloads/en/DeviceDoc/22244B.pdf
|
||||
MCP48x2: https://ww1.microchip.com/downloads/en/DeviceDoc/20002249B.pdf
|
||||
|
||||
maintainers:
|
||||
- Anshul Dalal <anshulusr@gmail.com>
|
||||
|
||||
allOf:
|
||||
- $ref: /schemas/spi/spi-peripheral-props.yaml#
|
||||
|
||||
properties:
|
||||
compatible:
|
||||
enum:
|
||||
- microchip,mcp4801
|
||||
- microchip,mcp4802
|
||||
- microchip,mcp4811
|
||||
- microchip,mcp4812
|
||||
- microchip,mcp4821
|
||||
- microchip,mcp4822
|
||||
|
||||
reg:
|
||||
maxItems: 1
|
||||
|
||||
vdd-supply: true
|
||||
|
||||
ldac-gpios:
|
||||
description: |
|
||||
Active Low LDAC (Latch DAC Input) pin used to update the DAC output.
|
||||
maxItems: 1
|
||||
|
||||
powerdown-gpios:
|
||||
description: |
|
||||
Active Low SHDN pin used to enter the shutdown mode.
|
||||
maxItems: 1
|
||||
|
||||
spi-cpha: true
|
||||
spi-cpol: true
|
||||
|
||||
required:
|
||||
- compatible
|
||||
- reg
|
||||
- vdd-supply
|
||||
|
||||
additionalProperties: false
|
||||
|
||||
examples:
|
||||
- |
|
||||
#include <dt-bindings/gpio/gpio.h>
|
||||
|
||||
spi {
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
dac@0 {
|
||||
compatible = "microchip,mcp4821";
|
||||
reg = <0>;
|
||||
vdd-supply = <&vdd_regulator>;
|
||||
ldac-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
|
||||
powerdown-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
|
||||
spi-cpha;
|
||||
spi-cpol;
|
||||
};
|
||||
};
|
Loading…
x
Reference in New Issue
Block a user