[PATCH v4 1/3] crypto: brcm: DT documentation for Broadcom SPU hardware

From: Rob Rice
Date: Fri Feb 03 2017 - 12:56:34 EST


Device tree documentation for Broadcom Secure Processing Unit
(SPU) crypto hardware.

Signed-off-by: Steve Lin <steven.lin1@xxxxxxxxxxxx>
Signed-off-by: Rob Rice <rob.rice@xxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
---
.../devicetree/bindings/crypto/brcm,spu-crypto.txt | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
create mode 100644 Documentation/devicetree/bindings/crypto/brcm,spu-crypto.txt

diff --git a/Documentation/devicetree/bindings/crypto/brcm,spu-crypto.txt b/Documentation/devicetree/bindings/crypto/brcm,spu-crypto.txt
new file mode 100644
index 0000000..29b6007
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/brcm,spu-crypto.txt
@@ -0,0 +1,22 @@
+The Broadcom Secure Processing Unit (SPU) hardware supports symmetric
+cryptographic offload for Broadcom SoCs. A SoC may have multiple SPU hardware
+blocks.
+
+Required properties:
+- compatible: Should be one of the following:
+ brcm,spum-crypto - for devices with SPU-M hardware
+ brcm,spu2-crypto - for devices with SPU2 hardware
+ brcm,spu2-v2-crypto - for devices with enhanced SPU2 hardware features like SHA3
+ and Rabin Fingerprint support
+ brcm,spum-nsp-crypto - for the Northstar Plus variant of the SPU-M hardware
+
+- reg: Should contain SPU registers location and length.
+- mboxes: The mailbox channel to be used to communicate with the SPU.
+ Mailbox channels correspond to DMA rings on the device.
+
+Example:
+ crypto@612d0000 {
+ compatible = "brcm,spum-crypto";
+ reg = <0 0x612d0000 0 0x900>;
+ mboxes = <&pdc0 0>;
+ };
--
2.1.0