Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757198AbaBUAiJ (ORCPT ); Thu, 20 Feb 2014 19:38:09 -0500 Received: from seldrel01.sonyericsson.com ([212.209.106.2]:9828 "EHLO seldrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757172AbaBUAiF (ORCPT ); Thu, 20 Feb 2014 19:38:05 -0500 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 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 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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>; + }; + }; + -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/