Merge git://git.denx.de/u-boot-sunxi
[oweals/u-boot.git] / doc / device-tree-bindings / regulator / st,stm32-vrefbuf.txt
1 STM32 VREFBUF - Voltage reference buffer
2
3 Some STM32 devices embed a voltage reference buffer which can be used as
4 voltage reference for ADCs, DACs and also as voltage reference for external
5 components through the dedicated VREF+ pin.
6
7 Required properties:
8 - compatible:           Must be "st,stm32-vrefbuf".
9 - reg:                  Offset and length of VREFBUF register set.
10 - clocks:               Must contain an entry for peripheral clock.
11
12 Optional properties:
13 - vdda-supply:          Phandle to the parent vdda supply regulator node.
14
15 Example:
16         vrefbuf: regulator@58003c00 {
17                 compatible = "st,stm32-vrefbuf";
18                 reg = <0x58003C00 0x8>;
19                 clocks = <&rcc VREF_CK>;
20                 regulator-min-microvolt = <1500000>;
21                 regulator-max-microvolt = <2500000>;
22                 vdda-supply = <&vdda>;
23         };