From patchwork Fri Mar 14 02:07:42 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 3830001 Return-Path: X-Original-To: patchwork-linux-arm-msm@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 D10A0BF540 for ; Fri, 14 Mar 2014 02:08:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EED4E202EC for ; Fri, 14 Mar 2014 02:08:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 17CA2202E9 for ; Fri, 14 Mar 2014 02:08:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755306AbaCNCH4 (ORCPT ); Thu, 13 Mar 2014 22:07:56 -0400 Received: from seldrel01.sonyericsson.com ([212.209.106.2]:9422 "EHLO seldrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755288AbaCNCHy (ORCPT ); Thu, 13 Mar 2014 22:07:54 -0400 From: Bjorn Andersson To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Rob Landley , Wolfram Sang , Grant Likely , , , , , , CC: "Ivan T. Ivanov" Subject: [PATCH v5 1/2] i2c: qup: Add device tree bindings information Date: Thu, 13 Mar 2014 19:07:42 -0700 Message-ID: <1394762863-12154-2-git-send-email-bjorn.andersson@sonymobile.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1394762863-12154-1-git-send-email-bjorn.andersson@sonymobile.com> References: <1394762863-12154-1-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=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 added version to compatible cleaned up example] Signed-off-by: Bjorn Andersson Acked-by: Rob Herring --- .../devicetree/bindings/i2c/qcom,i2c-qup.txt | 46 ++++++++++++++++++++ 1 file changed, 46 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..32ef64e --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt @@ -0,0 +1,46 @@ +Qualcomm Universal Peripheral (QUP) I2C controller + +Required properties: + - compatible: Should be: + * "qcom,i2c-qup-v1.1.1" for 8660, 8960 and 8064. + * "qcom,i2c-qup-v2.1.1" for 8974 v1. + * "qcom,i2c-qup-v2.2.1" for 8974 v2 and later. + - reg: Should contain QUP register address and length. + - interrupts: Should contain I2C interrupt. + + - clocks: A list of phandles + clock-specifiers, one for each entry in + clock-names. + - clock-names: Should contain: + * "core" for the core clock + * "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, + defaults to 100kHz if omitted. + +Child nodes should conform to i2c bus binding. + +Example: + + i2c@f9924000 { + compatible = "qcom,i2c-qup-v2.2.1"; + reg = <0xf9924000 0x1000>; + interrupts = <0 96 0>; + + clocks = <&gcc GCC_BLSP1_QUP2_I2C_APPS_CLK>, <&gcc GCC_BLSP1_AHB_CLK>; + clock-names = "core", "iface"; + + clock-frequency = <355000>; + + #address-cells = <1>; + #size-cells = <0>; + + dummy@60 { + compatible = "dummy"; + reg = <0x60>; + }; + }; +