This adds the binding documenation for the Imagination Technologies
hash accelerator that provides hardware acceleration for
SHA1/SHA224/SHA256/MD5 hashes. This hardware will be present in
the upcoming pistachio SoC.
Signed-off-by: James Hartley <james.hartley@xxxxxxxxxx>
---
.../devicetree/bindings/crypto/img-hash.txt | 26 ++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/crypto/img-hash.txt
diff --git a/Documentation/devicetree/bindings/crypto/img-hash.txt b/Documentation/devicetree/bindings/crypto/img-hash.txt
new file mode 100644
index 0000000..72764a8
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/img-hash.txt
@@ -0,0 +1,26 @@
+* Imagination Technologies Ltd. Hash Accelerator
+
+The hash accelerator provides hardware hashing acceleration for
+SHA1, SHA224, SHA256 and MD5 hashes
+
+Required properties:
+
+- compatible : "img,hash-accelerator"
+- reg : Offset and length of the register set for the module, and the DMA port
+- interrupts : The designated IRQ line for the hashing module.
+- dmas : DMA specifier as per Documentation/devicetree/bindings/dma/dma.txt
+- dma-names : Should be "tx"
+- clocks : Clock specifier
+- clock-names : "hash_clk" Used to clock data through the accelerator
+
+Example:
+
+ hash: hash@18149600 {
+ compatible = "img,hash-accelerator";
+ reg = <0x18149600 0x100, 0x18101100 0x4>;
+ interrupts = <59 4 2>;
+ dmas = <&dma 8 0xffffffff>;
+ dma-names = "tx";
+ clocks = <&hash_clk>;
+ clock-names = "hash_clk";
+ };
--
1.7.9.5
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