From patchwork Thu Feb 4 16:13:29 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lars-Peter Clausen X-Patchwork-Id: 8225161 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 [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id EC2089F37A for ; Thu, 4 Feb 2016 16:22:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0ADB9203AD for ; Thu, 4 Feb 2016 16:22:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 24FDF2026D for ; Thu, 4 Feb 2016 16:22:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966458AbcBDQV3 (ORCPT ); Thu, 4 Feb 2016 11:21:29 -0500 Received: from smtp-out-007.synserver.de ([212.40.185.7]:1672 "EHLO smtp-out-195.synserver.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S966454AbcBDQV1 (ORCPT ); Thu, 4 Feb 2016 11:21:27 -0500 X-Greylist: delayed 467 seconds by postgrey-1.27 at vger.kernel.org; Thu, 04 Feb 2016 11:21:27 EST Received: (qmail 26441 invoked by uid 0); 4 Feb 2016 16:13:35 -0000 X-SynServer-TrustedSrc: 1 X-SynServer-AuthUser: lars@metafoo.de X-SynServer-PPID: 26310 Received: from p4fde642a.dip0.t-ipconnect.de (HELO lars-laptop.ad.analog.com) [79.222.100.42] by 212.40.180.153 with SMTP; 4 Feb 2016 16:13:35 -0000 From: Lars-Peter Clausen To: Mark Brown , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala Cc: devicetree@vger.kernel.org, linux-spi@vger.kernel.org, Lars-Peter Clausen Subject: [PATCH 1/2] devicetree: Add bindings documentation for Analog Devices axi-spi-engine Date: Thu, 4 Feb 2016 17:13:29 +0100 Message-Id: <1454602410-14049-1-git-send-email-lars@metafoo.de> X-Mailer: git-send-email 2.1.4 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-6.0 required=5.0 tests=BAYES_00, RCVD_IN_BL_SPAMCOP_NET, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 the devicetree bindings documentation for the Analog Devices axi-spi-engine SPI master peripheral. This is a soft-peripheral used in FPGAs. The external interfaces of the peripheral are: * A memory mapped register map which is used to configure the peripheral. * One interrupt. * Two clocks, one for the memory mapped register interface and one for the SPI bus. * A SPI master interface to which the slave devices are connected. These interfaces are described by the devicetree bindings accordingly. Signed-off-by: Lars-Peter Clausen Acked-by: Rob Herring --- .../devicetree/bindings/spi/adi,axi-spi-engine.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/adi,axi-spi-engine.txt diff --git a/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.txt b/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.txt new file mode 100644 index 0000000..8a18d71 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/adi,axi-spi-engine.txt @@ -0,0 +1,31 @@ +Analog Devices AXI SPI Engine controller Device Tree Bindings + +Required properties: +- compatible : Must be "adi,axi-spi-engine-1.00.a"" +- reg : Physical base address and size of the register map. +- interrupts : Property with a value describing the interrupt + number. +- clock-names : List of input clock names - "s_axi_aclk", "spi_clk" +- clocks : Clock phandles and specifiers (See clock bindings for + details on clock-names and clocks). +- #address-cells : Must be <1> +- #size-cells : Must be <0> + +Optional subnodes: + Subnodes are use to represent the SPI slave devices connected to the SPI + master. They follow the generic SPI bindings as outlined in spi-bus.txt. + +Example: + + spi@@44a00000 { + compatible = "adi,axi-spi-engine-1.00.a"; + reg = <0x44a00000 0x1000>; + interrupts = <0 56 4>; + clocks = <&clkc 15 &clkc 15>; + clock-names = "s_axi_aclk", "spi_clk"; + + #address-cells = <1>; + #size-cells = <0>; + + /* SPI devices */ + };