From patchwork Fri Feb 21 00:38:09 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 3692081 Return-Path: X-Original-To: patchwork-linux-arm@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 007DABF13A for ; Fri, 21 Feb 2014 00:44:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1E33C20173 for ; Fri, 21 Feb 2014 00:44:23 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 240F82011D for ; Fri, 21 Feb 2014 00:44:22 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WGeDN-0000xX-8M; Fri, 21 Feb 2014 00:43:41 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WGe8U-0001PU-TZ; Fri, 21 Feb 2014 00:38:38 +0000 Received: from seldrel01.sonyericsson.com ([212.209.106.2]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WGe8G-0001Lz-HF for linux-arm-kernel@lists.infradead.org; Fri, 21 Feb 2014 00:38:25 +0000 From: Bjorn Andersson To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Rob Landley , Wolfram Sang , Grant Likely , , , , , , Subject: [PATCH v3 1/2] i2c: qup: Add device tree bindings information Date: Thu, 20 Feb 2014 16:38:09 -0800 Message-ID: <1392943090-30556-2-git-send-email-bjorn.andersson@sonymobile.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1392943090-30556-1-git-send-email-bjorn.andersson@sonymobile.com> References: <1392943090-30556-1-git-send-email-bjorn.andersson@sonymobile.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140220_193824_769421_209EC064 X-CRM114-Status: UNSURE ( 7.60 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -3.9 (---) Cc: "Ivan T. Ivanov" X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=no 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 --- .../devicetree/bindings/i2c/qcom,i2c-qup.txt | 44 ++++++++++++++++++++ 1 file changed, 44 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..38d505f --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt @@ -0,0 +1,44 @@ +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: 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, + 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>; + }; + }; +