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
7 title: STMicroelectronics STM32 Voltage reference buffer
8
9 description: |
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
14 maintainers:
15 - Fabrice Gasnier <fabrice.gasnier@foss.st.com>
16
17 allOf:
18 - $ref: regulator.yaml#
19
20 properties:
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
37 required:
38 - compatible
39 - reg
40 - clocks
41 - vdda-supply
42
43 unevaluatedProperties: false
44
45 examples:
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 ...
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