Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752053AbdC0ID4 (ORCPT ); Mon, 27 Mar 2017 04:03:56 -0400 Received: from mx0a-00176a03.pphosted.com ([67.231.149.52]:50343 "EHLO mx0a-00176a03.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751609AbdC0IDv (ORCPT ); Mon, 27 Mar 2017 04:03:51 -0400 From: Nandor Han To: linus.walleij@linaro.org, gnurou@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Nandor Han Subject: [PATCH 2/3] doc,dts - add XRA1403 DTS binding documentation Date: Mon, 27 Mar 2017 09:23:01 +0300 Message-Id: <39ba92bacf48da957f8f85d5cb11d3254fe3d68f.1490595641.git.nandor.han@ge.com> X-Mailer: git-send-email 2.10.1 In-Reply-To: References: In-Reply-To: References: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-03-27_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1703270058 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1599 Lines: 53 Add the XRA1403 DTS binding documentation. Signed-off-by: Nandor Han --- .../devicetree/bindings/gpio/gpio-xra1403.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-xra1403.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-xra1403.txt b/Documentation/devicetree/bindings/gpio/gpio-xra1403.txt new file mode 100644 index 0000000..ccf5337 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-xra1403.txt @@ -0,0 +1,37 @@ +GPIO Driver for XRA1403 16-BIT GPIO Expander With Reset Input from EXAR + +The XRA1403 is an 16-bit GPIO expander with an SPI interface. Features available: + - Individually programmable inputs: + - Internal pull-up resistors + - Polarity inversion + - Individual interrupt enable + - Rising edge and/or Falling edge interrupt + - Input filter + - Individually programmable outputs + - Output Level Control + - Output Three-State Control + +Properties +---------- +Check documentation for SPI and GPIO controllers regarding properties needed to configure the node. + + - compatible = "exar,xra1403". + - reg = SPI id of the device. + - gpio-controller: mark the node as gpio. + +Optional properties: +------------------- + - reset-gpios: in case available used to control the device reset line. + +Example +-------- + + gpioxra0: gpio@2 { + compatible = "exar,xra1403"; + reg = <2>; + gpio-controller; + #gpio-cells = <2>; + reset-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>; + spi-max-frequency = <1000000>; + status = "okay"; + }; -- 2.10.1