From patchwork Wed Dec 2 04:46:38 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yendapally Reddy Dhananjaya Reddy X-Patchwork-Id: 7742461 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 [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3CAAFBEEE1 for ; Wed, 2 Dec 2015 04:49:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 54FC320692 for ; Wed, 2 Dec 2015 04:49:00 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 802EE2068E for ; Wed, 2 Dec 2015 04:48:59 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a3zJq-0000le-FH; Wed, 02 Dec 2015 04:47:06 +0000 Received: from mail-gw1-out.broadcom.com ([216.31.210.62]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a3zJn-0000ga-Qk for linux-arm-kernel@lists.infradead.org; Wed, 02 Dec 2015 04:47:04 +0000 X-IronPort-AV: E=Sophos;i="5.20,371,1444719600"; d="scan'208";a="82182236" Received: from irvexchcas08.broadcom.com (HELO IRVEXCHCAS08.corp.ad.broadcom.com) ([10.9.208.57]) by mail-gw1-out.broadcom.com with ESMTP; 01 Dec 2015 23:04:06 -0800 Received: from IRVEXCHSMTP3.corp.ad.broadcom.com (10.9.207.53) by IRVEXCHCAS08.corp.ad.broadcom.com (10.9.208.57) with Microsoft SMTP Server (TLS) id 14.3.235.1; Tue, 1 Dec 2015 20:46:42 -0800 Received: from mail-irva-13.broadcom.com (10.10.10.20) by IRVEXCHSMTP3.corp.ad.broadcom.com (10.9.207.53) with Microsoft SMTP Server id 14.3.235.1; Tue, 1 Dec 2015 20:46:42 -0800 Received: from xl-rtp-02.rtp.broadcom.com (unknown [10.27.128.235]) by mail-irva-13.broadcom.com (Postfix) with ESMTP id C17C240FE5; Tue, 1 Dec 2015 20:43:20 -0800 (PST) From: Yendapally Reddy Dhananjaya Reddy To: Rob Herring , Pawel Moll , "Mark Rutland" , Ian Campbell , Kumar Gala , Ray Jui , Scott Branden , Jon Mason , Linus Walleij Subject: [PATCH 1/3] pinctrl: Broadcom NSP GPIO-a device tree bindings Date: Tue, 1 Dec 2015 23:46:38 -0500 Message-ID: <1449031598-18849-1-git-send-email-yrdreddy@broadcom.com> X-Mailer: git-send-email 2.1.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151201_204704_010938_ABBCCBBA X-CRM114-Status: GOOD ( 12.08 ) X-Spam-Score: -4.2 (----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Yendapally Reddy Dhananjaya Reddy , devicetree@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 Device tree binding documentation for Broadcom NSP GPIO-a driver Signed-off-by: Yendapally Reddy Dhananjaya Reddy --- .../devicetree/bindings/pinctrl/brcm,nsp-gpio.txt | 80 ++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/brcm,nsp-gpio.txt diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,nsp-gpio.txt b/Documentation/devicetree/bindings/pinctrl/brcm,nsp-gpio.txt new file mode 100644 index 0000000..bea4211 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/brcm,nsp-gpio.txt @@ -0,0 +1,80 @@ +Broadcom Northstar plus (NSP) GPIO/PINCONF Controller + +Required properties: +- compatible: + Must be "brcm,nsp-gpio-a" + +- reg: + Should contain the register physical address and length for each of + GPIO base, IO control registers + +- #gpio-cells: + Must be two. The first cell is the GPIO pin number (within the + controller's pin space) and the second cell is used for the following: + bit[0]: polarity (0 for active high and 1 for active low) + +- gpio-controller: + Specifies that the node is a GPIO controller + +- ngpios: + Number of gpios supported (58x25 supports 32 and 58x23 supports 24) + +Optional properties: +- interrupts: + Interrupt ID + +- interrupt-controller: + Specifies that the node is an interrupt controller + +- gpio-ranges: + Specifies the mapping between gpio controller and pin-controllers pins. + This requires 4 fields in cells defined as - + 1. Phandle of pin-controller. + 2. GPIO base pin offset. + 3 Pin-control base pin offset. + 4. number of gpio pins which are linearly mapped from pin base. + +Supported generic PINCONF properties in child nodes: +- pins: + The list of pins (within the controller's own pin space) that properties + in the node apply to. Pin names are "gpio-" + +- bias-disable: + Disable pin bias + +- bias-pull-up: + Enable internal pull up resistor + +- bias-pull-down: + Enable internal pull down resistor + +- drive-strength: + Valid drive strength values include 2, 4, 6, 8, 10, 12, 14, 16 (mA) + +Example: + + gpioa: gpio-a@18000020 { + compatible = "brcm,nsp-gpio-a"; + reg = <0x18000020 0x100>, + <0x1803f1c4 0x1c>; + #gpio-cells = <2>; + gpio-controller; + ngpios = <32>; + gpio-ranges = <&pinctrl 0 0 31>; + interrupt-controller; + interrupts = ; + + /* Hog a few default settings */ + pinctrl-names = "default"; + pinctrl-0 = <&led>; + led: led { + pins = "gpio-1"; + bias-pull-up; + }; + + pwr: pwr { + gpio-hog; + gpios = <3 1>; + output-high; + }; + };