From: James Hartley Subject: [PATCH V5 2/2] Documentation: crypto: Add DT binding info for the img hw hash accelerator Date: Thu, 12 Mar 2015 23:17:27 +0000 Message-ID: <1426202247-6221-3-git-send-email-james.hartley@imgtec.com> References: <1426202247-6221-1-git-send-email-james.hartley@imgtec.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , To: , , Return-path: Received: from mailapp01.imgtec.com ([195.59.15.196]:20302 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752920AbbCLXRh (ORCPT ); Thu, 12 Mar 2015 19:17:37 -0400 In-Reply-To: <1426202247-6221-1-git-send-email-james.hartley@imgtec.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: 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 Reviewed-by: Andrew Bresticker --- .../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..91a3d75 --- /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 : "sys" Used to clock the hash block registers + "hash" Used to clock data through the accelerator + +Example: + + hash: hash@18149600 { + compatible = "img,hash-accelerator"; + reg = <0x18149600 0x100>, <0x18101100 0x4>; + interrupts = ; + dmas = <&dma 8 0xffffffff 0>; + dma-names = "tx"; + clocks = <&cr_periph SYS_CLK_HASH>, <&clk_periph PERIPH_CLK_ROM>; + clock-names = "sys", "hash"; + }; -- 1.7.9.5