dt-bindings: Document the STM32 HW RNG bindings

This adds documentation of device tree bindings for the STM32 hardware
random number generator.

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Daniel Thompson 2015-10-12 09:21:28 +01:00 committed by Herbert Xu
parent a6479ea487
commit ff90900a4b

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STMicroelectronics STM32 HW RNG
===============================
The STM32 hardware random number generator is a simple fixed purpose IP and
is fully separated from other crypto functions.
Required properties:
- compatible : Should be "st,stm32-rng"
- reg : Should be register base and length as documented in the datasheet
- interrupts : The designated IRQ line for the RNG
- clocks : The clock needed to enable the RNG
Example:
rng: rng@50060800 {
compatible = "st,stm32-rng";
reg = <0x50060800 0x400>;
interrupts = <80>;
clocks = <&rcc 0 38>;
};