This adds device tree bindings for the Ux500 CRYP block as a compatible in the STM32 CRYP bindings. The Ux500 CRYP 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 CRYP block, which is what it is. The relationship to the existing STM32 CRYP block is pretty obvious when looking at the register map, and I have written patches to reuse the STM32 CRYP driver on the Ux500. The two properties added are DMA channels and power domain. Power domains are a generic SoC feature and the STM32 variant also has DMA channels. Cc: devicetree@xxxxxxxxxxxxxxx Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx> Cc: Lionel Debieve <lionel.debieve@xxxxxxxxxxx> Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx> Cc: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> --- ChangeLog v2->v3: - Collect Krzysztof's ACK. ChangeLog v1->v2: - Drop the second (new) example. --- .../bindings/crypto/st,stm32-cryp.yaml | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/Documentation/devicetree/bindings/crypto/st,stm32-cryp.yaml b/Documentation/devicetree/bindings/crypto/st,stm32-cryp.yaml index ed23bf94a8e0..6759c5bf3e57 100644 --- a/Documentation/devicetree/bindings/crypto/st,stm32-cryp.yaml +++ b/Documentation/devicetree/bindings/crypto/st,stm32-cryp.yaml @@ -6,12 +6,18 @@ $schema: http://devicetree.org/meta-schemas/core.yaml# title: STMicroelectronics STM32 CRYP bindings +description: The STM32 CRYP block is built on the CRYP block found in + the STn8820 SoC introduced in 2007, and subsequently used in the U8500 + SoC in 2010. + maintainers: - Lionel Debieve <lionel.debieve@xxxxxxxxxxx> properties: compatible: enum: + - st,stn8820-cryp + - stericsson,ux500-cryp - st,stm32f756-cryp - st,stm32mp1-cryp @@ -27,6 +33,19 @@ properties: resets: maxItems: 1 + dmas: + items: + - description: mem2cryp DMA channel + - description: cryp2mem DMA channel + + dma-names: + items: + - const: mem2cryp + - const: cryp2mem + + power-domains: + maxItems: 1 + required: - compatible - reg -- 2.38.1
