From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 426D2C10F0E for ; Tue, 9 Apr 2019 14:43:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 08EFC208C0 for ; Tue, 9 Apr 2019 14:43:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MMmaZesD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726739AbfDIOnH (ORCPT ); Tue, 9 Apr 2019 10:43:07 -0400 Received: from mail-it1-f194.google.com ([209.85.166.194]:52071 "EHLO mail-it1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726689AbfDIOnC (ORCPT ); Tue, 9 Apr 2019 10:43:02 -0400 Received: by mail-it1-f194.google.com with SMTP id s3so5305288itk.1; Tue, 09 Apr 2019 07:43:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=CQEtq5bL3CQj8UaXXdh0HijqXSkyGw7cYWzHm1YH5nY=; b=MMmaZesDDYehSATfJ9Mxv22G2Kic0wkAPbmQ1J8Xzcm2qdoxN4Vr1c34t5nddemegq q92swbMTO/tkb9BRaOBITDV0p0WyJcZDX5nKYaPELOdRiWeNmGAu9fF4zG8RKe9HA3Aa o+qADGV0bALgDjKQij2rU7wgf5yONdP00bQVaQ5UsuJnXg7GXZ3pg8VRaHloOCzA2SSV BzKgYwJ109QPe1bGvu3oTSAJzmg4JWKP/W+RWvTD+ikbeNGXf1x8r/pvwipGHLLoOfOj 6I3n98025D5IIVJ6/nJUw0ND88xJg9k+VDSCv7GA0a9+bW8NZRQ7A7PKmbye0XgcoC2p VeOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=CQEtq5bL3CQj8UaXXdh0HijqXSkyGw7cYWzHm1YH5nY=; b=Qzy5FnljGoD2KAuOdvhcIpH1YKD13CqeT+Icp5i/+C1OwUWcpYoO/N7O7LhLptSh1R s8D9kRBdeCxajK4RSAZlQ76U80L3W43aOX2eEc3khZ5AZN4Dvy8nmkrgCUL6yrTGiKzR p2gsb1marIgn+FW1iM0ZQbW2Z2nH/AgtMljl8ybOh2J2LSvzao23SKWOrcGFSY7uaA5z b99pPiG/XtZ1OO1h53cvYP/H1KGRnAdO7lEXZVpiT1fq2Awq3qRCrDxrkhDLqfuqcmqz UYqGPiacgDeYxvbpIwURpbxvjO8VOFBmXxFFhBuluJpEn+aI9TxgFyE34AJmz1VdHXCn boeA== X-Gm-Message-State: APjAAAWLjA4TTtV/XVq3B4k9L6KaA1hA8Qt6B9Mudls8BEm5UTiDfmrW dVBKKCONWvjoX6wkapLG3i0= X-Google-Smtp-Source: APXvYqycKmmny+cyT+BI/BGmWUDd/Q4MUNPqlwFOo2tfMH5Y7htfd9DOv/UAyiMhRCQWmYg7DUaePA== X-Received: by 2002:a24:fc06:: with SMTP id b6mr21751044ith.130.1554820981719; Tue, 09 Apr 2019 07:43:01 -0700 (PDT) Received: from svens-asus.arcx.com ([184.94.50.30]) by smtp.gmail.com with ESMTPSA id j10sm6562000itj.32.2019.04.09.07.43.00 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 09 Apr 2019 07:43:01 -0700 (PDT) From: Sven Van Asbroeck X-Google-Original-From: Sven Van Asbroeck To: robh+dt@kernel.org, linus.walleij@linaro.org Cc: lee.jones@linaro.org, mark.rutland@arm.com, afaerber@suse.de, treding@nvidia.com, david@lechnology.com, noralf@tronnes.org, johan@kernel.org, monstr@monstr.eu, michal.vokac@ysoft.com, arnd@arndb.de, gregkh@linuxfoundation.org, john.garry@huawei.com, geert+renesas@glider.be, robin.murphy@arm.com, paul.gortmaker@windriver.com, sebastien.bourdelin@savoirfairelinux.com, icenowy@aosc.io, stuyoder@gmail.com, jan.kiszka@siemens.com, maxime.ripard@bootlin.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v10 4/7] dt-bindings: anybus-controller: document devicetree binding Date: Tue, 9 Apr 2019 10:42:47 -0400 Message-Id: <20190409144250.7237-5-TheSven73@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190409144250.7237-1-TheSven73@gmail.com> References: <20190409144250.7237-1-TheSven73@gmail.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch adds devicetree binding documentation for the Arcx anybus controller. Signed-off-by: Sven Van Asbroeck --- .../fieldbus/arcx,anybus-controller.txt | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/fieldbus/arcx,anybus-controller.txt diff --git a/Documentation/devicetree/bindings/fieldbus/arcx,anybus-controller.txt b/Documentation/devicetree/bindings/fieldbus/arcx,anybus-controller.txt new file mode 100644 index 000000000000..b1f9474f36d5 --- /dev/null +++ b/Documentation/devicetree/bindings/fieldbus/arcx,anybus-controller.txt @@ -0,0 +1,71 @@ +* Arcx Anybus-S controller + +This chip communicates with the SoC over a parallel bus. It is +expected that its Device Tree node is specified as the child of a node +corresponding to the parallel bus used for communication. + +Required properties: +-------------------- + + - compatible : The following chip-specific string: + "arcx,anybus-controller" + + - reg : three areas: + index 0: bus memory area where the cpld registers are located. + index 1: bus memory area of the first host's dual-port ram. + index 2: bus memory area of the second host's dual-port ram. + + - reset-gpios : the GPIO pin connected to the reset line of the controller. + + - interrupts : two interrupts: + index 0: interrupt connected to the first host + index 1: interrupt connected to the second host + Generic interrupt client node bindings are described in + interrupt-controller/interrupts.txt + +Optional: use of subnodes +------------------------- + +The card connected to a host may need additional properties. These can be +specified in subnodes to the controller node. + +The subnodes are identified by the standard 'reg' property. Which information +exactly can be specified depends on the bindings for the function driver +for the subnode. + +Required controller node properties when using subnodes: +- #address-cells: should be one. +- #size-cells: should be zero. + +Required subnode properties: +- reg: Must contain the host index of the card this subnode describes: + <0> for the first host on the controller + <1> for the second host on the controller + Note that only a single card can be plugged into a host, so the host + index uniquely describes the card location. + +Example of usage: +----------------- + +This example places the bridge on top of the i.MX WEIM parallel bus, see: +Documentation/devicetree/bindings/bus/imx-weim.txt + +&weim { + controller@0,0 { + compatible = "arcx,anybus-controller"; + reg = <0 0 0x100>, <0 0x400000 0x800>, <1 0x400000 0x800>; + reset-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>; + interrupt-parent = <&gpio1>; + interrupts = <1 IRQ_TYPE_LEVEL_LOW>, <5 IRQ_TYPE_LEVEL_LOW>; + /* fsl,weim-cs-timing is a i.MX WEIM bus specific property */ + fsl,weim-cs-timing = <0x024400b1 0x00001010 0x20081100 + 0x00000000 0xa0000240 0x00000000>; + /* optional subnode for a card plugged into the first host */ + #address-cells = <1>; + #size-cells = <0>; + card@0 { + reg = <0>; + /* card specific properties go here */ + }; + }; +}; -- 2.17.1