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linux/Documentation/devicetree/bindings/rng/brcm,bcm2835.yaml
Álvaro Fernández Rojas 381345820d dt-bindings: rng: bcm2835: document reset support
brcm,bcm6368-rng controllers require resetting the IPSEC clock in order to get
a functional RNG.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-03-13 00:04:06 +11:00

83 lines
1.4 KiB
YAML

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/rng/brcm,bcm2835.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: BCM2835/6368 Random number generator
maintainers:
- Stefan Wahren <stefan.wahren@i2se.com>
- Florian Fainelli <f.fainelli@gmail.com>
- Herbert Xu <herbert@gondor.apana.org.au>
properties:
compatible:
enum:
- brcm,bcm2835-rng
- brcm,bcm-nsp-rng
- brcm,bcm5301x-rng
- brcm,bcm6368-rng
reg:
maxItems: 1
clocks:
maxItems: 1
clock-names:
const: ipsec
resets:
maxItems: 1
reset-names:
const: ipsec
interrupts:
maxItems: 1
required:
- compatible
- reg
if:
properties:
compatible:
enum:
- brcm,bcm6368-rng
then:
required:
- clocks
- clock-names
- resets
- reset-names
additionalProperties: false
examples:
- |
rng@7e104000 {
compatible = "brcm,bcm2835-rng";
reg = <0x7e104000 0x10>;
interrupts = <2 29>;
};
- |
rng@18033000 {
compatible = "brcm,bcm-nsp-rng";
reg = <0x18033000 0x14>;
};
- |
rng@10004180 {
compatible = "brcm,bcm6368-rng";
reg = <0x10004180 0x14>;
clocks = <&periph_clk 18>;
clock-names = "ipsec";
resets = <&periph_rst 4>;
reset-names = "ipsec";
};