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110 lines
2.2 KiB
110 lines
2.2 KiB
# 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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$id: "http://devicetree.org/schemas/iio/dac/st,stm32-dac.yaml#" |
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$schema: "http://devicetree.org/meta-schemas/core.yaml#" |
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title: STMicroelectronics STM32 DAC bindings |
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description: | |
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The STM32 DAC is a 12-bit voltage output digital-to-analog converter. The DAC |
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may be configured in 8 or 12-bit mode. It has two output channels, each with |
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its own converter. |
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It has built-in noise and triangle waveform generator and supports external |
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triggers for conversions. The DAC's output buffer allows a high drive output |
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current. |
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maintainers: |
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- Fabrice Gasnier <[email protected]> |
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properties: |
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compatible: |
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enum: |
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- st,stm32f4-dac-core |
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- st,stm32h7-dac-core |
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reg: |
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maxItems: 1 |
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resets: |
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maxItems: 1 |
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clocks: |
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maxItems: 1 |
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clock-names: |
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items: |
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- const: pclk |
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vref-supply: |
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description: Phandle to the vref input analog reference voltage. |
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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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additionalProperties: false |
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required: |
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- compatible |
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- reg |
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- clocks |
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- clock-names |
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- vref-supply |
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- '#address-cells' |
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- '#size-cells' |
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patternProperties: |
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"^dac@[1-2]+$": |
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type: object |
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description: |
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A DAC block node should contain at least one subnode, representing an |
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DAC instance/channel available on the machine. |
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properties: |
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compatible: |
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const: st,stm32-dac |
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reg: |
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description: Must be either 1 or 2, to define (single) channel in use |
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enum: [1, 2] |
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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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- '#io-channel-cells' |
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examples: |
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- | |
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// Example on stm32mp157c |
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#include <dt-bindings/clock/stm32mp1-clks.h> |
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dac: dac@40017000 { |
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compatible = "st,stm32h7-dac-core"; |
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reg = <0x40017000 0x400>; |
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clocks = <&rcc DAC12>; |
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clock-names = "pclk"; |
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vref-supply = <&vref>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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dac@1 { |
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compatible = "st,stm32-dac"; |
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#io-channel-cells = <1>; |
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reg = <1>; |
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}; |
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dac@2 { |
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compatible = "st,stm32-dac"; |
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#io-channel-cells = <1>; |
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reg = <2>; |
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}; |
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}; |
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...
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