# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/rng/st,stm32-rng.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: STMicroelectronics STM32 RNG
description: |
The STM32 hardware random number generator is a simple fixed purpose
IP and is fully separated from other crypto functions.
maintainers:
- Lionel Debieve <lionel.debieve@foss.st.com>
properties:
compatible:
enum:
- st,stm32-rng
- st,stm32mp13-rng
- st,stm32mp25-rng
reg:
maxItems: 1
clocks:
minItems: 1
maxItems: 2
clock-names:
items:
- const: core
- const: bus
resets:
maxItems: 1
clock-error-detect:
type: boolean
description: If set enable the clock detection management
st,rng-lock-conf:
type: boolean
description: If set, the RNG configuration in RNG_CR, RNG_HTCR and
RNG_NSCR will be locked.
access-controllers:
minItems: 1
maxItems: 2
required:
- compatible
- reg
- clocks
allOf:
- if:
properties:
compatible:
contains:
enum:
- st,stm32-rng
then:
properties:
st,rng-lock-conf: false
- if:
properties:
compatible:
contains:
enum:
- st,stm32-rng
- st,stm32mp13-rng
then:
properties:
clocks:
maxItems: 1
clock-names: false
else:
properties:
clocks:
minItems: 2
required:
- clock-names
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/stm32mp1-clks.h>
rng@54003000 {
compatible = "st,stm32-rng";
reg = <0x54003000 0x400>;
clocks = <&rcc RNG1_K>;
};
...
