From patchwork Fri Jan 17 23:03:38 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 3507601 Return-Path: X-Original-To: patchwork-linux-arm-msm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B3F149F390 for ; Fri, 17 Jan 2014 23:03:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DCE842018B for ; Fri, 17 Jan 2014 23:03:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AD36C20165 for ; Fri, 17 Jan 2014 23:03:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753613AbaAQXDu (ORCPT ); Fri, 17 Jan 2014 18:03:50 -0500 Received: from seldrel01.sonyericsson.com ([212.209.106.2]:9630 "EHLO seldrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753414AbaAQXDr (ORCPT ); Fri, 17 Jan 2014 18:03:47 -0500 From: Bjorn Andersson To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Rob Landley , Wolfram Sang , Grant Likely , Bjorn Andersson , "Ivan T. Ivanov" , Jean Delvare , Greg Kroah-Hartman , Martin Schwidefsky , James Ralston , Bill Brown , Matt Porter , Andy Shevchenko , , , , , , Subject: [PATCH v3 1/2] i2c: qup: Add device tree bindings information Date: Fri, 17 Jan 2014 15:03:38 -0800 Message-ID: <1389999819-10648-2-git-send-email-bjorn.andersson@sonymobile.com> X-Mailer: git-send-email 1.8.2.2 In-Reply-To: <1389999819-10648-1-git-send-email-bjorn.andersson@sonymobile.com> References: <1389999819-10648-1-git-send-email-bjorn.andersson@sonymobile.com> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Spam-Status: No, score=-7.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, 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 From: "Ivan T. Ivanov" The Qualcomm Universal Peripherial (QUP) wraps I2C mini-core and provide input and output FIFO's for it. I2C controller can operate as master with supported bus speeds of 100Kbps and 400Kbps. Signed-off-by: Ivan T. Ivanov [bjorn: reformulated part of binding description and cleaned up example] Signed-off-by: Bjorn Andersson --- .../devicetree/bindings/i2c/qcom,i2c-qup.txt | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt new file mode 100644 index 0000000..a99711b --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt @@ -0,0 +1,41 @@ +Qualcomm Universal Peripheral (QUP) I2C controller + +Required properties: + - compatible: Should be "qcom,i2c-qup". + - reg: Should contain QUP register address and length. + - interrupts: Should contain I2C interrupt. + + - clocks: Should contain the core clock and the AHB clock. + - clock-names: Should be "core" for the core clock and "iface" for the + AHB clock. + + - #address-cells: Should be <1> Address cells for i2c device address + - #size-cells: Should be <0> as i2c addresses have no size component + +Optional properties: + - clock-frequency: Should specify the desired i2c bus clock frequency in Hz, + default is 100kHz if omitted. + +Child nodes should conform to i2c bus binding. + +Example: + + i2c2: i2c@f9924000 { + compatible = "qcom,i2c-qup"; + reg = <0xf9924000 0x1000>; + interrupts = <0 96 0>; + + clocks = <&gcc_blsp1_qup2_i2c_apps_clk>, <&gcc_blsp1_ahb_clk>; + clock-names = "core", "iface"; + + clock-frequency = <355000>; + + #address-cells = <1>; + #size-cells = <0>; + + dummy@60 { + compatible = "dummy"; + reg = <0x60>; + }; + }; +