From patchwork Thu Sep 1 17:21:19 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benoit Cousson X-Patchwork-Id: 1119872 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p81HNk5X024588 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 1 Sep 2011 17:24:07 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QzAyp-0002d9-B7; Thu, 01 Sep 2011 17:23:08 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1QzAyo-0007Ak-NG; Thu, 01 Sep 2011 17:23:06 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QzAyB-000713-Iq for linux-arm-kernel@lists.infradead.org; Thu, 01 Sep 2011 17:22:28 +0000 Received: from dlep36.itg.ti.com ([157.170.170.91]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id p81HMQCx030060 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 1 Sep 2011 12:22:26 -0500 Received: from dlep26.itg.ti.com (smtp-le.itg.ti.com [157.170.170.27]) by dlep36.itg.ti.com (8.13.8/8.13.8) with ESMTP id p81HMQk9019999; Thu, 1 Sep 2011 12:22:26 -0500 (CDT) Received: from DFLE70.ent.ti.com (localhost [127.0.0.1]) by dlep26.itg.ti.com (8.13.8/8.13.8) with ESMTP id p81HMQXj017823; Thu, 1 Sep 2011 12:22:26 -0500 (CDT) Received: from dlelxv22.itg.ti.com (172.17.1.197) by dfle70.ent.ti.com (128.247.5.40) with Microsoft SMTP Server id 14.1.323.3; Thu, 1 Sep 2011 12:22:25 -0500 Received: from localhost.localdomain (lncpu04.tif.ti.com [137.167.102.15]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id p81HLa51016431; Thu, 1 Sep 2011 12:22:24 -0500 From: Benoit Cousson To: , Subject: [PATCH 03/13] documentation/dt: Add OMAP i2c bindings documentation Date: Thu, 1 Sep 2011 19:21:19 +0200 Message-ID: <1314897689-17791-4-git-send-email-b-cousson@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1314897689-17791-1-git-send-email-b-cousson@ti.com> References: <1314897689-17791-1-git-send-email-b-cousson@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110901_132227_771797_A9950D47 X-CRM114-Status: GOOD ( 12.79 ) X-Spam-Score: -2.8 (--) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (-2.8 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [198.47.26.153 listed in list.dnswl.org] -0.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain Cc: manjugk@ti.com, devicetree-discuss@lists.ozlabs.org, linux-omap@vger.kernel.org, Benoit Cousson , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Thu, 01 Sep 2011 17:24:07 +0000 (UTC) From: G, Manjunath Kondaiah Add documentation for using omap i2c controller with device tree support enabled. Signed-off-by: G, Manjunath Kondaiah [b-cousson@ti.com: Update the documentaion with hwmods binding] Signed-off-by: Benoit Cousson --- Documentation/devicetree/bindings/i2c/omap-i2c.txt | 30 ++++++++++++++++++++ 1 files changed, 30 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/i2c/omap-i2c.txt diff --git a/Documentation/devicetree/bindings/i2c/omap-i2c.txt b/Documentation/devicetree/bindings/i2c/omap-i2c.txt new file mode 100644 index 0000000..0dc1de0 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/omap-i2c.txt @@ -0,0 +1,30 @@ +I2C for OMAP platforms + +Required properties : +- compatible : Must be "ti,omap-i2c" +- hwmods : Must be "i2c", n being the instance number (1-based) +- #address-cells = <1>; +- #size-cells = <0>; + +Recommended properties : +- clock-frequency : Desired I2C bus clock frequency in Hz. Otherwise + the default 100 kHz frequency will be used. + +Optional properties: +- Child nodes conforming to i2c bus binding + +Note: Current implementation will fetch base address, irq and dma +from omap hwmod data base during device registration. +Future plan is to migrate hwmod data base contents into device tree +blob so that, all the required data will be used from device tree dts +file. + +Examples : + +i2c1: i2c@0 { + compatible = "ti,omap-i2c"; + #address-cells = <1>; + #size-cells = <0>; + hwmods = "i2c1"; + clock-frequency = <400000>; +};