From patchwork Fri Apr 4 21:27:54 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Soren Brinkmann X-Patchwork-Id: 3941051 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 72A4BBFF02 for ; Fri, 4 Apr 2014 21:30:22 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A0A8A20398 for ; Fri, 4 Apr 2014 21:30:21 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A9E95202FF for ; Fri, 4 Apr 2014 21:30:20 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WWBfk-0007Bc-0R; Fri, 04 Apr 2014 21:29:12 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WWBfZ-00086a-3h; Fri, 04 Apr 2014 21:29:01 +0000 Received: from mail-qg0-x235.google.com ([2607:f8b0:400d:c04::235]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WWBfD-00082g-J5 for linux-arm-kernel@lists.infradead.org; Fri, 04 Apr 2014 21:28:40 +0000 Received: by mail-qg0-f53.google.com with SMTP id z60so2712431qgd.12 for ; Fri, 04 Apr 2014 14:28:12 -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; bh=F9bYwwMz5sEienbUa6H5ZQmT3zjkcUON0BK4XZYmpX0=; b=Q3HIuyMGuN/gpZcoSgY+SzB8x7HhAL5+kexxD74K0BcpFOECE/itPrW6CR3Fd355BU qbyKut7+ElBiErU1mcnvOJe7/6oZLDPdTKTMXbmYAm4/+8LOMRZZB1GIdj7nRj4JKleG gYdNzvUBAPeyA5pRyIh3+ulbQDxShS6oe6X5SWbeJCGQ26hGdlBzIJ1TPs3+yhvDLxm4 E/mMurrz3ly18U9PwInbPBPjUh1XBTQ1dgVcIjn+NCPeEOgRzVefm3ZLA1SzUtKajw2w Lih2RNXFMpTpq1lhsFRGgn/DobI1wzT5CmvIi3MfDerQpVrLJu7eFG/dX8ew0P+QOwKd EWNQ== X-Received: by 10.224.56.5 with SMTP id w5mr17321686qag.60.1396646890209; Fri, 04 Apr 2014 14:28:10 -0700 (PDT) Received: from localhost ([149.199.62.254]) by mx.google.com with ESMTPSA id 4sm17706454qau.29.2014.04.04.14.28.07 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Fri, 04 Apr 2014 14:28:08 -0700 (PDT) From: Soren Brinkmann To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Rob Landley , Russell King , Wolfram Sang , Grant Likely , Michal Simek Subject: [PATCH v5 1/3] i2c: cadence: Document device tree bindings Date: Fri, 4 Apr 2014 14:27:54 -0700 Message-Id: <1396646876-27336-1-git-send-email-soren.brinkmann@xilinx.com> X-Mailer: git-send-email 1.9.1.1.gbb9f595 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140404_172839_729529_FAB8E284 X-CRM114-Status: UNSURE ( 9.80 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.9 (-) Cc: =?UTF-8?q?S=C3=B6ren=20Brinkmann?= , Harini Katakam , devicetree@vger.kernel.org, Mike Looijmans , Gerhard Sittig , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,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 device tree binding documentation for the Cadence I2C controller. Signed-off-by: Soren Brinkmann --- Changes in v5: - Document all properties - list clock-names as optional property (driver doesn't use it, though) - use lower case hex digits in 'reg' property - reword description of 'clocks' property - remove implementation specific notes regarding default speed - use #defines for interrupt specifier Changes in v4: - moved adding DT docs into this dedicated patch Changes in v3: None Changes in v2: None --- .../devicetree/bindings/i2c/i2c-cadence.txt | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-cadence.txt diff --git a/Documentation/devicetree/bindings/i2c/i2c-cadence.txt b/Documentation/devicetree/bindings/i2c/i2c-cadence.txt new file mode 100644 index 000000000000..7cb0b5608f49 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-cadence.txt @@ -0,0 +1,24 @@ +Binding for the Cadence I2C controller + +Required properties: + - reg: Physical base address and size of the controller's register area. + - compatible: Compatibility string. Must be 'cdns,i2c-r1p10'. + - clocks: Input clock specifier. Refer to common clock bindings. + - interrupts: Interrupt specifier. Refer to interrupt bindings. + - #address-cells: Should be 1. + - #size-cells: Should be 0. + +Optional properties: + - clock-frequency: Desired operating frequency, in Hz, of the bus. + - clock-names: Input clock name, should be 'pclk'. + +Example: + i2c@e0004000 { + compatible = "cdns,i2c-r1p10"; + clocks = <&clkc 38>; + interrupts = ; + reg = <0xe0004000 0x1000>; + clock-frequency = <400000>; + #address-cells = <1>; + #size-cells = <0>; + };