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: Lionel Debieve <lionel.debieve@xxxxxxxxxxx> Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx> Cc: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> --- This was previously sent out as an open question but nothing happened, now I send it as part of the STM32 bindings, in a series making the Linux STM32 driver use the STM32 driver. --- .../bindings/crypto/st,stm32-cryp.yaml | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/Documentation/devicetree/bindings/crypto/st,stm32-cryp.yaml b/Documentation/devicetree/bindings/crypto/st,stm32-cryp.yaml index ed23bf94a8e0..69614ab51f81 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 @@ -48,4 +67,17 @@ examples: resets = <&rcc CRYP1_R>; }; + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/reset/stericsson,db8500-prcc-reset.h> + #include <dt-bindings/arm/ux500_pm_domains.h> + cryp@a03cb000 { + compatible = "stericsson,ux500-cryp"; + reg = <0xa03cb000 0x1000>; + interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&prcc_pclk 6 2>; + power-domains = <&pm_domains DOMAIN_VAPE>; + }; + ... -- 2.38.1
