From patchwork Wed May 17 15:07:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugo Villeneuve X-Patchwork-Id: 683242 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0DE30C77B75 for ; Wed, 17 May 2023 15:46:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230270AbjEQPqe (ORCPT ); Wed, 17 May 2023 11:46:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229572AbjEQPqd (ORCPT ); Wed, 17 May 2023 11:46:33 -0400 X-Greylist: delayed 2218 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Wed, 17 May 2023 08:46:30 PDT Received: from mail.hugovil.com (mail.hugovil.com [162.243.120.170]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07848558B; Wed, 17 May 2023 08:46:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=hugovil.com ; s=x; h=Subject:Content-Transfer-Encoding:MIME-Version:Message-Id:Date:Cc:To :From:Sender:Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post: List-Owner:List-Archive; bh=IDRJwtLsO/yeHBOhvU39bxW+bfvC/DJiGxuwhVpGSJI=; b=L 72JGwLZ0CrNmH62H4XitVMSAiKLvB3sUcq9nYXl1a5dZnNwCSf/oTYOWWZL2eGdDgNXtrLmCgyyHh 5q/7HgvpsAkUynIPxSStqmKtzbi7GVodVJDEIWY7jLyya5lEez0iOLOvKPsUn5he8gmCAstPhI3mq Aogs2YJY4Tl4AmKE=; Received: from modemcable168.174-80-70.mc.videotron.ca ([70.80.174.168]:45486 helo=pettiford.lan) by mail.hugovil.com with esmtpa (Exim 4.92) (envelope-from ) id 1pzIkw-0007IE-6L; Wed, 17 May 2023 11:07:59 -0400 From: Hugo Villeneuve To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: hugo@hugovil.com, linux-gpio@vger.kernel.org, Hugo Villeneuve , linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Date: Wed, 17 May 2023 11:07:46 -0400 Message-Id: <20230517150746.3823249-1-hugo@hugovil.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 70.80.174.168 X-SA-Exim-Mail-From: hugo@hugovil.com Subject: [PATCH 1/2] dt-bindings: sc16is7xx: Add property to change GPIO function X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.hugovil.com) Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org From: Hugo Villeneuve Some variants in this series of uart controllers have GPIO pins that are shared between GPIO and modem control lines. The pin mux mode (GPIO or modem control lines) can be set for each ports (channels) supported by the variant. This adds a property to the device tree to set the GPIO pin mux to modem control lines on selected ports if needed. Signed-off-by: Hugo Villeneuve --- .../bindings/serial/nxp,sc16is7xx.txt | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt index 0fa8e3e43bf8..426b7285ad50 100644 --- a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt +++ b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt @@ -23,6 +23,9 @@ Optional properties: 1 = active low. - irda-mode-ports: An array that lists the indices of the port that should operate in IrDA mode. +- modem-control-line-ports: An array that lists the indices of the port that + should have shared GPIO lines configured as modem + control lines. Example: sc16is750: sc16is750@51 { @@ -35,6 +38,17 @@ Example: #gpio-cells = <2>; }; + sc16is752: sc16is752@54 { + compatible = "nxp,sc16is752"; + reg = <0x54>; + clocks = <&clk20m>; + interrupt-parent = <&gpio3>; + interrupts = <7 IRQ_TYPE_EDGE_FALLING>; + modem-control-line-ports = <1>; /* Port 1 as modem control lines */ + gpio-controller; /* Port 0 as GPIOs */ + #gpio-cells = <2>; + }; + * spi as bus Required properties: @@ -59,6 +73,9 @@ Optional properties: 1 = active low. - irda-mode-ports: An array that lists the indices of the port that should operate in IrDA mode. +- modem-control-line-ports: An array that lists the indices of the port that + should have shared GPIO lines configured as modem + control lines. Example: sc16is750: sc16is750@0 { @@ -70,3 +87,14 @@ Example: gpio-controller; #gpio-cells = <2>; }; + + sc16is752: sc16is752@0 { + compatible = "nxp,sc16is752"; + reg = <0>; + clocks = <&clk20m>; + interrupt-parent = <&gpio3>; + interrupts = <7 IRQ_TYPE_EDGE_FALLING>; + modem-control-line-ports = <1>; /* Port 1 as modem control lines */ + gpio-controller; /* Port 0 as GPIOs */ + #gpio-cells = <2>; + };