From patchwork Mon Apr 14 09:06:54 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Harini Katakam X-Patchwork-Id: 3978791 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id ECD489F2CC for ; Mon, 14 Apr 2014 09:10:06 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 26A8D20127 for ; Mon, 14 Apr 2014 09:10:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3BD71201B4 for ; Mon, 14 Apr 2014 09:10:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751644AbaDNJJm (ORCPT ); Mon, 14 Apr 2014 05:09:42 -0400 Received: from mail-qc0-f176.google.com ([209.85.216.176]:53702 "EHLO mail-qc0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751128AbaDNJHG (ORCPT ); Mon, 14 Apr 2014 05:07:06 -0400 Received: by mail-qc0-f176.google.com with SMTP id m20so8394677qcx.7 for ; Mon, 14 Apr 2014 02:07:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=wZi7ttr6slM20zNQKMdk8Q4GHjc2+vcsyf8nFGqNC3Y=; b=zHgk44CINKa0n6XForTl0fHv1dTT06kMOp67qwnw7gI+FjZ77ywHwgaqusAmUtHs3R U1ICI6g/CHh7JPWw3WcGpeP1ccMWhpAZuW4EUdRi3BelHouyL3BeTCCGf0VmH2Uftqv2 sQKd0GCExtQDeFwgNUuakUJEbdr4+V7dfXxPZH4lMTIzjuXcta3lx+UupRH0KwoZr7j4 9CeCjy1qGxH51hRvYZ48X+pDcaI5Wpysmd6oUgKdZXXK0AolOLl8051eAbCwOoHMnGLd 5MoiE4FBr0eY9m9Yasd0eN6/tFwcJxoDj6J6WSsqVbsyRwWE/u78nHmihfCP5IEgtRby /LtQ== X-Received: by 10.224.98.144 with SMTP id q16mr17865880qan.16.1397466425416; Mon, 14 Apr 2014 02:07:05 -0700 (PDT) Received: from localhost ([149.199.62.254]) by mx.google.com with ESMTPSA id e69sm19800073qgf.17.2014.04.14.02.07.04 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Mon, 14 Apr 2014 02:07:05 -0700 (PDT) From: Harini Katakam To: broonie@kernel.org, grant.likely@linaro.org, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org Cc: michals@xilinx.com, Harini Katakam Subject: [PATCH v4 2/2] devicetree: Add devicetree bindings documentation for Cadence SPI Date: Mon, 14 Apr 2014 14:36:54 +0530 Message-Id: <1397466414-18368-2-git-send-email-harinik@xilinx.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1397466414-18368-1-git-send-email-harinik@xilinx.com> References: <1397466414-18368-1-git-send-email-harinik@xilinx.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add spi-cadence bindings documentation. Signed-off-by: Harini Katakam --- v4 changes: No changes. v3 changes: - Remove /bits/ 16 from num-cs property in example. - Add is-decoded-cs optional property and add to description of num-cs. v2 changes: - Separate patch for bindings. - Add xilinx compatible string; Make compatible string first in the node. - Use property name num-cs. Make this property optional. --- .../devicetree/bindings/spi/spi-cadence.txt | 31 ++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-cadence.txt diff --git a/Documentation/devicetree/bindings/spi/spi-cadence.txt b/Documentation/devicetree/bindings/spi/spi-cadence.txt new file mode 100644 index 0000000..94f0914 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-cadence.txt @@ -0,0 +1,31 @@ +Cadence SPI controller Device Tree Bindings +------------------------------------------- + +Required properties: +- compatible : Should be "cdns,spi-r1p6" or "xlnx,zynq-spi-r1p6". +- reg : Physical base address and size of SPI registers map. +- interrupts : Property with a value describing the interrupt + number. +- interrupt-parent : Must be core interrupt controller +- clock-names : List of input clock names - "ref_clk", "pclk" + (See clock bindings for details). +- clocks : Clock phandles (see clock bindings for details). + +Optional properties: +- num-cs : Number of chip selects used. + If a decoder is used, this will be the number of + chip selects after the decoder. +- is-decoded-cs : Flag to indicate whether decoder is used or not. + +Example: + + spi@e0007000 { + compatible = "xlnx,zynq-spi-r1p6"; + clock-names = "ref_clk", "pclk"; + clocks = <&clkc 26>, <&clkc 35>; + interrupt-parent = <&intc>; + interrupts = <0 49 4>; + num-cs = <4>; + is-decoded-cs = <0>; + reg = <0xe0007000 0x1000>; + } ;