From patchwork Thu May 18 13:29:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugo Villeneuve X-Patchwork-Id: 684260 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 64250C7EE2C for ; Thu, 18 May 2023 13:32:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231483AbjERNcS (ORCPT ); Thu, 18 May 2023 09:32:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56524 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231486AbjERNcP (ORCPT ); Thu, 18 May 2023 09:32:15 -0400 Received: from mail.hugovil.com (mail.hugovil.com [162.243.120.170]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2718E19AA; Thu, 18 May 2023 06:32:01 -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=gv+Uil0bms5UyRlK+q3kZYwBqsWMgwJratCLIUValBY=; b=J 0pxBQBD60cRfykraZOpAovm6FFBHPsefVM9QK0e5pUAE2mL4a1QeGvwZ0Ym9My/XVyOvIRTUI9k9S B2MyFqcUDlguUdxf0KsKe9weZnZHqv70UvnYApX8WDd7Ymg8wBAf/jxkzwOhUSaVfzyVbkaeYil4g WzGBjwDuorAU+AEA=; Received: from modemcable168.174-80-70.mc.videotron.ca ([70.80.174.168]:36904 helo=pettiford.lan) by mail.hugovil.com with esmtpa (Exim 4.92) (envelope-from ) id 1pzdjZ-0004WC-V9; Thu, 18 May 2023 09:31:58 -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: Thu, 18 May 2023 09:29:06 -0400 Message-Id: <20230518132905.4182265-1-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: [RFC PATCH v2 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 --- v1 -> v2: Add nxp vendor prefix Add git base-commit .../bindings/serial/nxp,sc16is7xx.txt | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) base-commit: 4d6d4c7f541d7027beed4fb86eb2c451bd8d6fff diff --git a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt index 0fa8e3e43bf8..23a81c83f012 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. +- nxp,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>; + nxp,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. +- nxp,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>; + nxp,modem-control-line-ports = <1>; /* Port 1 as modem control lines */ + gpio-controller; /* Port 0 as GPIOs */ + #gpio-cells = <2>; + };