1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/regulator/st,stm32-vrefbuf.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: STMicroelectronics STM32 Voltage reference buffer bindings
8
9description: |
10  Some STM32 devices embed a voltage reference buffer which can be used as
11  voltage reference for ADCs, DACs and also as voltage reference for external
12  components through the dedicated VREF+ pin.
13
14maintainers:
15  - Fabrice Gasnier <fabrice.gasnier@foss.st.com>
16
17allOf:
18  - $ref: "regulator.yaml#"
19
20properties:
21  compatible:
22    const: st,stm32-vrefbuf
23
24  reg:
25    maxItems: 1
26
27  clocks:
28    maxItems: 1
29
30  vdda-supply:
31    description: phandle to the vdda input analog voltage.
32
33required:
34  - compatible
35  - reg
36  - clocks
37  - vdda-supply
38
39unevaluatedProperties: false
40
41examples:
42  - |
43    #include <dt-bindings/clock/stm32mp1-clks.h>
44    vrefbuf@50025000 {
45      compatible = "st,stm32-vrefbuf";
46      reg = <0x50025000 0x8>;
47      regulator-min-microvolt = <1500000>;
48      regulator-max-microvolt = <2500000>;
49      clocks = <&rcc VREF>;
50      vdda-supply = <&vdda>;
51    };
52
53...
54
55