From patchwork Fri Sep 26 11:57:11 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Agner X-Patchwork-Id: 393701 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id C1A56140092 for ; Fri, 26 Sep 2014 21:58:38 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754829AbaIZL5Y (ORCPT ); Fri, 26 Sep 2014 07:57:24 -0400 Received: from mail.kmu-office.ch ([178.209.48.102]:47719 "EHLO mail.kmu-office.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753724AbaIZL5V (ORCPT ); Fri, 26 Sep 2014 07:57:21 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.kmu-office.ch (Postfix) with ESMTP id AC485A0473; Fri, 26 Sep 2014 13:55:52 +0200 (CEST) X-Virus-Scanned: by amavisd-new at kmu-office.ch X-Amavis-Alert: BAD HEADER, Duplicate header field: "In-Reply-To" Received: from mail.kmu-office.ch ([127.0.0.1]) by localhost (mail.kmu-office.ch [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mI4qNFXym+bW; Fri, 26 Sep 2014 13:55:52 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by mail.kmu-office.ch (Postfix) with ESMTP id 280DFA0467; Fri, 26 Sep 2014 13:55:49 +0200 (CEST) Received: from trochilidae.toradex.int (unknown [46.140.72.82]) (Authenticated sender: stefan@agner.ch) by mail.kmu-office.ch (Postfix) with ESMTPSA id 72582A046D; Fri, 26 Sep 2014 13:55:48 +0200 (CEST) From: Stefan Agner To: linus.walleij@linaro.org, shawn.guo@freescale.com Cc: gnurou@gmail.com, kernel@pengutronix.de, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, bpringlemeir@nbsps.com, l.stach@pengutronix.de, stefan@agner.ch Subject: [PATCH v4 4/4] Documentation: dts: add bindings for Vybrid GPIO/PORT module Date: Fri, 26 Sep 2014 13:57:11 +0200 Message-Id: <48d7d5598fd0ac5d99dd93a75d47a4c5ac1a606a.1411731755.git.stefan@agner.ch> X-Mailer: git-send-email 2.1.0 In-Reply-To: References: In-Reply-To: References: Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The Vybrid SoC device tree (vf610.dtsi) used this bindings since its initial commit in May 2013. However, a proper gpiolib driver was missing so far. With the addition of the gpiolib driver, the bindings proved to be useful and complete, hence a good time to add the documentation. Signed-off-by: Stefan Agner Acked-by: Shawn Guo --- .../devicetree/bindings/gpio/gpio-vf610.txt | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-vf610.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-vf610.txt b/Documentation/devicetree/bindings/gpio/gpio-vf610.txt new file mode 100644 index 0000000..da84121 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-vf610.txt @@ -0,0 +1,56 @@ +* Freescale VF610 PORT/GPIO module + +The Freescale PORT/GPIO modules are two adjacent modules providing GPIO +functionality. Each pair serves 32 GPIOs. The VF610 has 5 instances of +each, and each PORT module has its own interrupt. + +Required properties for GPIO node: +- compatible : Should be "fsl,-gpio", currently "fsl,vf610-gpio" +- reg : The first reg tuple represents the PORT module, the second tuple + the GPIO module. +- interrupts : Should be the port interrupt shared by all 32 pins. +- gpio-controller : Marks the device node as a gpio controller. +- #gpio-cells : Should be two. The first cell is the pin number and + the second cell is used to specify the gpio polarity: + 0 = active high + 1 = active low +- interrupt-controller: Marks the device node as an interrupt controller. +- #interrupt-cells : Should be 2. The first cell is the GPIO number. + The second cell bits[3:0] is used to specify trigger type and level flags: + 1 = low-to-high edge triggered. + 2 = high-to-low edge triggered. + 4 = active high level-sensitive. + 8 = active low level-sensitive. + +Note: Each GPIO port should have an alias correctly numbered in "aliases" +node. + +Examples: + +aliases { + gpio0 = &gpio1; + gpio1 = &gpio2; +}; + +gpio1: gpio@40049000 { + compatible = "fsl,vf610-gpio"; + reg = <0x40049000 0x1000 0x400ff000 0x40>; + interrupts = <0 107 IRQ_TYPE_LEVEL_HIGH>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + gpio-ranges = <&iomuxc 0 0 32>; +}; + +gpio2: gpio@4004a000 { + compatible = "fsl,vf610-gpio"; + reg = <0x4004a000 0x1000 0x400ff040 0x40>; + interrupts = <0 108 IRQ_TYPE_LEVEL_HIGH>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + gpio-ranges = <&iomuxc 0 32 32>; +}; +