This adds the binding documentation 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.hart...@imgtec.com>
---
.../devicetree/bindings/crypto/img-hash.txt | 27 ++++++++++++++++++++
1 file changed, 27 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..7adc519
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/img-hash.txt
@@ -0,0 +1,27 @@
+Imagination Technologies hardware 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 specifiers
+- clock-names : "hash_clk" Used to clock data through the accelerator
+ "hash_reg_clk" Used to clock the hash block registers
+
+Example:
+
+ hash: hash@18149600 {
+ compatible = "img,hash-accelerator";
+ reg = <0x18149600 0x100, 0x18101100 0x4>;
+ interrupts = <GIC_SHARED 59 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&dma 8 0xffffffff>;
+ dma-names = "tx";
+ clocks = <&cr_periph SYS_CLK_HASH>, <&clk_periph
PERIPH_CLK_ROM>;
+ clock-names = "hash_clk, hash_reg_clk";
+ };
--
1.7.9.5
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