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dt-bindings: Document STM32 HASH bindings

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This adds documentation of device tree bindings for the STM32
HASH controller.

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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lionel.debieve@st.com 2017-07-13 15:32:26 +02:00 committed by Herbert Xu
parent c35af01d93
commit 7bb952cdfa
1 changed files with 30 additions and 0 deletions
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Documentation/devicetree/bindings/crypto/st,stm32-hash.txt Normal file
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* STMicroelectronics STM32 HASH
Required properties:
- compatible: Should contain entries for this and backward compatible
HASH versions:
- "st,stm32f456-hash" for stm32 F456.
- "st,stm32f756-hash" for stm32 F756.
- reg: The address and length of the peripheral registers space
- interrupts: the interrupt specifier for the HASH
- clocks: The input clock of the HASH instance
Optional properties:
- resets: The input reset of the HASH instance
- dmas: DMA specifiers for the HASH. See the DMA client binding,
Documentation/devicetree/bindings/dma/dma.txt
- dma-names: DMA request name. Should be "in" if a dma is present.
- dma-maxburst: Set number of maximum dma burst supported
Example:
hash1: hash@50060400 {
compatible = "st,stm32f756-hash";
reg = <0x50060400 0x400>;
interrupts = <80>;
clocks = <&rcc 0 STM32F7_AHB2_CLOCK(HASH)>;
resets = <&rcc STM32F7_AHB2_RESET(HASH)>;
dmas = <&dma2 7 2 0x400 0x0>;
dma-names = "in";
dma-maxburst = <0>;
};