1 STMicroelectronics STM32 DAC
3 The STM32 DAC is a 12-bit voltage output digital-to-analog converter. The DAC
4 may be configured in 8 or 12-bit mode. It has two output channels, each with
6 It has built-in noise and triangle waveform generator and supports external
7 triggers for conversions. The DAC's output buffer allows a high drive output
10 Contents of a stm32 dac root node:
11 -----------------------------------
13 - compatible: Must be "st,stm32h7-dac-core".
14 - reg: Offset and length of the device's register set.
15 - clocks: Must contain an entry for pclk (which feeds the peripheral bus
17 - clock-names: Must be "pclk".
18 - vref-supply: Phandle to the vref+ input analog reference supply.
19 - #address-cells = <1>;
23 - resets: Must contain the phandle to the reset controller.
24 - A pinctrl state named "default" for each DAC channel may be defined to set
25 DAC_OUTx pin in mode of operation for analog output on external pin.
27 Contents of a stm32 dac child node:
28 -----------------------------------
29 DAC core node should contain at least one subnode, representing a
30 DAC instance/channel available on the machine.
33 - compatible: Must be "st,stm32-dac".
34 - reg: Must be either 1 or 2, to define (single) channel in use
35 - #io-channel-cells = <1>: See the IIO bindings section "IIO consumers" in
36 Documentation/devicetree/bindings/iio/iio-bindings.txt
40 compatible = "st,stm32h7-dac-core";
41 reg = <0x40007400 0x400>;
44 vref-supply = <®_vref>;
45 pinctrl-names = "default";
46 pinctrl-0 = <&dac_out1 &dac_out2>;
51 compatible = "st,stm32-dac";
52 #io-channels-cells = <1>;
57 compatible = "st,stm32-dac";
58 #io-channels-cells = <1>;