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: 1119742 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p81HMYEu025104 for ; Thu, 1 Sep 2011 17:22:34 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755940Ab1IARWd (ORCPT ); Thu, 1 Sep 2011 13:22:33 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:35302 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755085Ab1IARWc (ORCPT ); Thu, 1 Sep 2011 13:22:32 -0400 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: , CC: , , , , Benoit Cousson 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 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Thu, 01 Sep 2011 17:22:34 +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>; +};