From patchwork Thu Sep 18 07:27:29 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiubo Li X-Patchwork-Id: 390659 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 1279A14019D for ; Thu, 18 Sep 2014 17:28:09 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752349AbaIRH1u (ORCPT ); Thu, 18 Sep 2014 03:27:50 -0400 Received: from mail-bl2on0147.outbound.protection.outlook.com ([65.55.169.147]:56715 "EHLO na01-bl2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751149AbaIRH1u (ORCPT ); Thu, 18 Sep 2014 03:27:50 -0400 Received: from DM2PR03CA0008.namprd03.prod.outlook.com (10.141.96.18) by BL2PR03MB323.namprd03.prod.outlook.com (10.141.68.22) with Microsoft SMTP Server (TLS) id 15.0.1024.9; Thu, 18 Sep 2014 07:27:47 +0000 Received: from BL2FFO11FD014.protection.gbl (2a01:111:f400:7c09::100) by DM2PR03CA0008.outlook.office365.com (2a01:111:e400:2428::18) with Microsoft SMTP Server (TLS) id 15.0.1024.12 via Frontend Transport; Thu, 18 Sep 2014 07:27:46 +0000 Received: from tx30smr01.am.freescale.net (192.88.168.50) by BL2FFO11FD014.mail.protection.outlook.com (10.173.160.222) with Microsoft SMTP Server (TLS) id 15.0.1029.15 via Frontend Transport; Thu, 18 Sep 2014 07:27:45 +0000 Received: from titan.ap.freescale.net ([10.192.208.233]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id s8I7RZA4031067; Thu, 18 Sep 2014 00:27:37 -0700 From: Xiubo Li To: , , , , , , , , , CC: , Xiubo Li Subject: [PATCH] mfd: syscon: binding: Add syscon endianness support. Date: Thu, 18 Sep 2014 15:27:29 +0800 Message-ID: <1411025249-34333-1-git-send-email-Li.Xiubo@freescale.com> X-Mailer: git-send-email 2.1.0.27.g96db324 X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:192.88.168.50; CTRY:US; IPV:CAL; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(10019020)(6009001)(189002)(199003)(47776003)(64706001)(19580395003)(83322001)(19580405001)(44976005)(6806004)(20776003)(97736003)(26826002)(68736004)(21056001)(87286001)(84676001)(104016003)(104166001)(79102003)(81542003)(74662003)(85306004)(102836001)(90102001)(229853001)(76482002)(107046002)(74502003)(46102003)(81342003)(80022003)(77982003)(95666004)(106466001)(105606002)(99396002)(4396001)(50226001)(48376002)(62966002)(50466002)(92726001)(92566001)(2201001)(86362001)(50986999)(87936001)(85852003)(89996001)(93916002)(83072002)(88136002)(36756003)(31966008)(77156001)(1121002)(921003); DIR:OUT; SFP:1102; SCL:1; SRVR:BL2PR03MB323; H:tx30smr01.am.freescale.net; FPR:; MLV:ovrnspm; PTR:InfoDomainNonexistent; MX:1; A:1; LANG:en; MIME-Version: 1.0 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;UriScan:; X-Forefront-PRVS: 033857D0BD Received-SPF: Fail (protection.outlook.com: domain of freescale.com does not designate 192.88.168.50 as permitted sender) receiver=protection.outlook.com; client-ip=192.88.168.50; helo=tx30smr01.am.freescale.net; Authentication-Results: spf=fail (sender IP is 192.88.168.50) smtp.mailfrom=Li.Xiubo@freescale.com; X-OriginatorOrg: freescale.com Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org For many drivers which will support rich endianness of Devices need define DT properties by itself with the binding support. The regmap core has already support endianness of the following case: Index Device DT properties needed ------------------------------------------ 1 BE 'big-endian' 2 LE 'little-endian' Please see the regmap binding for more detail information of the endianness support. Signed-off-by: Xiubo Li --- This patch hasn't any dependency with Pankaj Dubey's: mfd: syscon: Decouple syscon interface from platform devices Documentation/devicetree/bindings/mfd/syscon.txt | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/mfd/syscon.txt b/Documentation/devicetree/bindings/mfd/syscon.txt index fe8150b..7c33178 100644 --- a/Documentation/devicetree/bindings/mfd/syscon.txt +++ b/Documentation/devicetree/bindings/mfd/syscon.txt @@ -10,11 +10,22 @@ OS driver) to determine the location of the registers, and access the registers directly. Required properties: -- compatible: Should contain "syscon". -- reg: the register region can be accessed from syscon +- compatible: Should contain "syscon". +- reg: The register region can be accessed from syscon -Examples: +Optional property: +- {big,little}-endian: Boolean property. Please see ../regmap/regmap.txt + for more information. + +Example 1: gpr: iomuxc-gpr@020e0000 { compatible = "fsl,imx6q-iomuxc-gpr", "syscon"; reg = <0x020e0000 0x38>; }; + +Example 2: +dcfg: dcfg@1ee0000 { + compatible = "fsl,ls1021a-dcfg", "syscon"; + reg = <0x0 0x1ee0000 0x0 0x10000>; + big-endian; +};