From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752071AbdFZApi (ORCPT ); Sun, 25 Jun 2017 20:45:38 -0400 Received: from gate2.alliedtelesis.co.nz ([202.36.163.20]:34769 "EHLO gate2.alliedtelesis.co.nz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751704AbdFZAop (ORCPT ); Sun, 25 Jun 2017 20:44:45 -0400 From: Chris Packham To: wsa@the-dreams.de, robh+dt@kernel.org, linux-i2c@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Chris Packham , Mark Rutland , devicetree@vger.kernel.org Subject: [PATCH v3 1/5] dt-bindings: add bindings for i2c-pca-platform Date: Mon, 26 Jun 2017 12:44:30 +1200 Message-Id: <20170626004434.2757-2-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170626004434.2757-1-chris.packham@alliedtelesis.co.nz> References: <20170620011837.14010-1-chris.packham@alliedtelesis.co.nz> <20170626004434.2757-1-chris.packham@alliedtelesis.co.nz> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Chris Packham --- Changes in v2: - Split dt-binding to separate patch, use "reset-gpios" instead of "gpios". Changes in v3: - State the gpio is active low - Add example .../devicetree/bindings/i2c/i2c-pca-platform.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-pca-platform.txt diff --git a/Documentation/devicetree/bindings/i2c/i2c-pca-platform.txt b/Documentation/devicetree/bindings/i2c/i2c-pca-platform.txt new file mode 100644 index 000000000000..f1f3876bb8e8 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-pca-platform.txt @@ -0,0 +1,29 @@ +* NXP PCA PCA9564/PCA9665 I2C controller + +The PCA9564/PCA9665 serves as an interface between most standard +parallel-bus microcontrollers/microprocessors and the serial I2C-bus +and allows the parallel bus system to communicate bi-directionally +with the I2C-bus. + +Required properties : + + - reg : Offset and length of the register set for the device + - compatible : one of "nxp,pca9564" or "nxp,pca9665" + +Optional properties + - interrupts : the interrupt number + - interrupt-parent : the phandle for the interrupt controller. + If an interrupt is not specified polling will be used. + - reset-gpios : gpio specifier for gpio connected to RESET_N pin. As the line + is active low, it should be marked GPIO_ACTIVE_LOW. + - clock-frequency : I2C bus frequency. + +Example: + i2c0: i2c@80000 { + compatible = "nxp,pca9564"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x80000 0x4>; + reset-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>; + clock-frequency = <100000>; + }; -- 2.13.0