xref: /linux/Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.yaml (revision 001821b0e79716c4e17c71d8e053a23599a7a508) 
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
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
33  access-controllers:
34    minItems: 1
35    maxItems: 2
36
37required:
38  - compatible
39  - reg
40  - clocks
41  - vdda-supply
42
43unevaluatedProperties: false
44
45examples:
46  - |
47    #include <dt-bindings/clock/stm32mp1-clks.h>
48    vrefbuf@50025000 {
49      compatible = "st,stm32-vrefbuf";
50      reg = <0x50025000 0x8>;
51      regulator-min-microvolt = <1500000>;
52      regulator-max-microvolt = <2500000>;
53      clocks = <&rcc VREF>;
54      vdda-supply = <&vdda>;
55    };
56
57...
58