From mboxrd@z Thu Jan 1 00:00:00 1970 From: 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> References: <1314897689-17791-1-git-send-email-b-cousson@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: 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 In-Reply-To: <1314897689-17791-1-git-send-email-b-cousson@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: grant.likely@secretlab.ca, tony@atomide.com Cc: linux-omap@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, manjugk@ti.com, Benoit Cousson 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>; +}; -- 1.7.0.4