Commit 85f3fc54 authored Jan 25, 2023 by Linus Walleij Committed by Herbert Xu Feb 03, 2023

dt-bindings: crypto: Let STM32 define Ux500 HASH



This adds device tree bindings for the Ux500 HASH block
as a compatible in the STM32 HASH bindings.

The Ux500 HASH binding has been used for ages in the kernel
device tree for Ux500 but was never documented, so fill in
the gap by making it a sibling of the STM32 HASH block,
which is what it is.

The relationship to the existing STM32 HASH block is pretty
obvious when looking at the register map, and I have written
patches to reuse the STM32 HASH driver on the Ux500.

The main difference from the outside is that the Ux500 HASH
lacks the interrupt line, so some special if-clauses are
needed to accomodate this in the binding.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent 5efa7186

Documentation/devicetree/bindings/crypto/st,stm32-hash.yaml

+22 −1

Original line number	Diff line number	Diff line
		@@ -6,12 +6,18 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#

		title: STMicroelectronics STM32 HASH

		description: The STM32 HASH block is built on the HASH block found in
		the STn8820 SoC introduced in 2007, and subsequently used in the U8500
		SoC in 2010.

		maintainers:
		- Lionel Debieve <lionel.debieve@foss.st.com>

		properties:
		compatible:
		enum:
		- st,stn8820-hash
		- stericsson,ux500-hash
		- st,stm32f456-hash
		- st,stm32f756-hash

		@@ -41,10 +47,25 @@ properties:
		maximum: 2
		default: 0

		power-domains:
		maxItems: 1

		required:
		- compatible
		- reg
		- clocks

		allOf:
		- if:
		properties:
		compatible:
		items:
		const: stericsson,ux500-hash
		then:
		properties:
		interrupts: false
		else:
		required:
		- interrupts

		additionalProperties: false