From patchwork Fri Jul 12 20:14:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongwei Zhang X-Patchwork-Id: 1131520 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 45lkfY3P9cz9sBF for ; Sat, 13 Jul 2019 06:14:29 +1000 (AEST) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ami.com Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 45lkfX4GXBzDqmb for ; Sat, 13 Jul 2019 06:14:28 +1000 (AEST) X-Original-To: linux-aspeed@lists.ozlabs.org Delivered-To: linux-aspeed@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=ami.com (client-ip=63.147.10.40; helo=atlmailgw1.ami.com; envelope-from=hongweiz@ami.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ami.com Received: from atlmailgw1.ami.com (atlmailgw1.ami.com [63.147.10.40]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45lkfB6lMnzDqX6 for ; Sat, 13 Jul 2019 06:14:07 +1000 (AEST) X-AuditID: ac1060b2-3fdff70000003a7d-24-5d28ea136749 Received: from atlms1.us.megatrends.com (atlms1.us.megatrends.com [172.16.96.144]) (using TLS with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client did not present a certificate) by atlmailgw1.ami.com (Symantec Messaging Gateway) with SMTP id F5.C9.14973.31AE82D5; Fri, 12 Jul 2019 16:14:11 -0400 (EDT) Received: from hongweiz-Ubuntu-AMI.us.megatrends.com (172.16.98.93) by atlms1.us.megatrends.com (172.16.96.144) with Microsoft SMTP Server (TLS) id 14.3.408.0; Fri, 12 Jul 2019 16:14:03 -0400 From: Hongwei Zhang To: Joel Stanley , Andrew Jeffery , Linus Walleij , Subject: [PATCH 2/3 v2] dt-bindings: gpio: aspeed: Add SGPIO support Date: Fri, 12 Jul 2019 16:14:00 -0400 Message-ID: <1562962440-15908-1-git-send-email-hongweiz@ami.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [172.16.98.93] X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrHLMWRmVeSWpSXmKPExsWyRiBhgq7wK41Yg6nnFSx2Xeaw+DL3FIvF /CPnWC1+n//LbDHlz3Imi02Pr7FaNK8+x2yxef4fRovLu+awWSy9fpHJonXvEXYHbo+r7bvY PdbMW8Po8f5GK7vHxY/HmD02repk87hzbQ+bx+Yl9R7nZyxk9Pi8SS6AM4rLJiU1J7MstUjf LoErY9+ehUwF0wUqTn3eydzAOJu3i5GDQ0LARKJ9V0oXIxeHkMAuJonbr+6yQDiHGSWuv//O 3sXIycEmoCaxd/McJpCEiEAvo8TCr4vBHGaB1UwS7RuOg1UJC7hIrDjbywZiswioSnSduscC YvMKOEj8/vcMrEZCQE7i5rlOZoi4oMTJmU/AapgFJCQOvngBFhcSkJW4degxE0S9gsTzvscs Exj5ZiFpmYWkZQEj0ypGocSSnNzEzJz0ckO9xNxMveT83E2MkDDftIOx5aL5IUYmDsZDjBIc zEoivKv+q8cK8aYkVlalFuXHF5XmpBYfYpTmYFES51255luMkEB6YklqdmpqQWoRTJaJg1Oq gXHrH3H5dyUOYndeT792gKF/9TWfu/JlgYeeynnI3Y85Usbu+/belScZh3c/qHo/3/7V0+Yz j6JvzazNPCyYoJQt2nG577PPld4XzYuFhApW35PqC5m+ib00fXuDtfr82ODzTw+W9XvZvf/v /iLwx+r2r8VfFdf+bDk1c7K8xk7eexIfAoXeX7JUYinOSDTUYi4qTgQADUXdmGECAAA= X-BeenThere: linux-aspeed@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux ASPEED SoC development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-aspeed@lists.ozlabs.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski , Rob Herring , Hongwei Zhang , linux-arm-kernel@lists.infradead.org Errors-To: linux-aspeed-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linux-aspeed" Add bindings to support SGPIO on AST2400 or AST2500. Signed-off-by: Hongwei Zhang --- .../devicetree/bindings/gpio/sgpio-aspeed.txt | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100755 Documentation/devicetree/bindings/gpio/sgpio-aspeed.txt diff --git a/Documentation/devicetree/bindings/gpio/sgpio-aspeed.txt b/Documentation/devicetree/bindings/gpio/sgpio-aspeed.txt new file mode 100755 index 0000000..3ae2b79 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/sgpio-aspeed.txt @@ -0,0 +1,43 @@ +Aspeed SGPIO controller Device Tree Bindings +------------------------------------------- + +Required properties: +- compatible : Either "aspeed,ast2400-sgpio" or "aspeed,ast2500-sgpio" + +- #gpio-cells : Should be two + - First cell is the GPIO line number + - Second cell is used to specify optional + parameters (unused) + +- reg : Address and length of the register set for the device +- gpio-controller : Marks the device node as a GPIO controller. +- interrupts : Interrupt specifier (see interrupt bindings for + details) + +- interrupt-controller : Mark the GPIO controller as an interrupt-controller + +- nr-gpios : number of GPIO pins to serialise. (should be multiple of 8, up to 80 pins) + if not specified, defaults to 80. + +- clocks : A phandle to the APB clock for SGPM clock division + +- bus-frequency : SGPM CLK frequency, if not specified defaults to 1 MHz + + +The sgpio and interrupt properties are further described in their respective bindings documentation: + +- Documentation/devicetree/bindings/sgpio/gpio.txt +- Documentation/devicetree/bindings/interrupt-controller/interrupts.txt + + Example: + sgpio@1e780200 { + #gpio-cells = <2>; + compatible = "aspeed,ast2500-sgpio"; + gpio-controller; + interrupts = <40>; + reg = <0x1e780200 0x0100>; + clocks = <&syscon ASPEED_CLK_APB>; + interrupt-controller; + nr-gpios = <80>; + bus-frequency = <1000000>; + };