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authorGilad Ben-Yossef <gilad@benyossef.com>2017-11-16 06:15:28 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2017-11-29 17:33:27 +1100
commit23eb61d304f9a6a6ec507ee27dd2b6c631c26c14 (patch)
tree66d35c1c5ee4325a8f7770391c60cf5a123adf2c /Documentation/devicetree/bindings/crypto
parent87aae50af730a28dc1d8846d86dca5e9aa724a9f (diff)
downloadlinux-23eb61d304f9a6a6ec507ee27dd2b6c631c26c14.tar.bz2
dt-bindings: add device tree binding for Arm TrustZone CryptoCell crypto engine
The Arm TrustZone CryptoCell is a hardware security engine. This patch adds DT bindings for its Rich Execution Environment crypto engine. A driver supporting this device is already present in the staging tree. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'Documentation/devicetree/bindings/crypto')
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diff --git a/Documentation/devicetree/bindings/crypto/arm-cryptocell.txt b/Documentation/devicetree/bindings/crypto/arm-cryptocell.txt
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+Arm TrustZone CryptoCell cryptographic engine
+
+Required properties:
+- compatible: Should be "arm,cryptocell-712-ree".
+- reg: Base physical address of the engine and length of memory mapped region.
+- interrupts: Interrupt number for the device.
+
+Optional properties:
+- interrupt-parent: The phandle for the interrupt controller that services
+ interrupts for this device.
+- clocks: Reference to the crypto engine clock.
+- dma-coherent: Present if dma operations are coherent.
+
+Examples:
+
+ arm_cc712: crypto@80000000 {
+ compatible = "arm,cryptocell-712-ree";
+ interrupt-parent = <&intc>;
+ interrupts = < 0 30 4 >;
+ reg = < 0x80000000 0x10000 >;
+
+ };