1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/rng/st,stm32-rng.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: STMicroelectronics STM32 RNG
8
9 description: |
10 The STM32 hardware random number generator is a simple fixed purpose
11 IP and is fully separated from other crypto functions.
12
13 maintainers:
14 - Lionel Debieve <lionel.debieve@foss.st.com>
15
16 properties:
17 compatible:
18 enum:
19 - st,stm32-rng
20 - st,stm32mp13-rng
21
22 reg:
23 maxItems: 1
24
25 clocks:
26 maxItems: 1
27
28 resets:
29 maxItems: 1
30
31 clock-error-detect:
32 type: boolean
33 description: If set enable the clock detection management
34
35 st,rng-lock-conf:
36 type: boolean
37 description: If set, the RNG configuration in RNG_CR, RNG_HTCR and
38 RNG_NSCR will be locked.
39
40 access-controllers:
41 minItems: 1
42 maxItems: 2
43
44 required:
45 - compatible
46 - reg
47 - clocks
48
49 allOf:
50 - if:
51 properties:
52 compatible:
53 contains:
54 enum:
55 - st,stm32-rng
56 then:
57 properties:
58 st,rng-lock-conf: false
59
60 additionalProperties: false
61
62 examples:
63 - |
64 #include <dt-bindings/clock/stm32mp1-clks.h>
65 rng@54003000 {
66 compatible = "st,stm32-rng";
67 reg = <0x54003000 0x400>;
68 clocks = <&rcc RNG1_K>;
69 };
70
71 ...
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