From nobody Mon Feb 9 21:37:24 2026 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 049F3C87FF1 for ; Wed, 7 Jun 2023 14:05:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240884AbjFGOFx (ORCPT ); Wed, 7 Jun 2023 10:05:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40950 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240205AbjFGOFs (ORCPT ); Wed, 7 Jun 2023 10:05:48 -0400 Received: from mail.hugovil.com (mail.hugovil.com [162.243.120.170]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7B561BEC; Wed, 7 Jun 2023 07:05:45 -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:References: In-Reply-To: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:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=SuJQI5JxUPzY+H5j7N6gL+Df0hCmvZbTgQvKUtpTEpg=; b=lxFwyIRPR7jlhJYI5I55AmpVI1 gAMwRwqqutMusoc4NIPYpZbkF1M26ebBw0gEUOSlQxlavN6C7bxU5cOTEd7hCHI8o00GfO90E4QDV vu9EaHRkeqC3GfkHlFFtY6ls+SYXM9rkdsxoUkfZf+ktJOZuHTQak0VeOU+9cQtAGVoU=; Received: from modemcable168.174-80-70.mc.videotron.ca ([70.80.174.168]:57832 helo=pettiford.lan) by mail.hugovil.com with esmtpa (Exim 4.92) (envelope-from ) id 1q6tn9-0005dF-1m; Wed, 07 Jun 2023 10:05:39 -0400 From: Hugo Villeneuve To: gregkh@linuxfoundation.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jirislaby@kernel.org, jringle@gridpoint.com, jesse.sung@canonical.com, isaac.true@canonical.com, l.perczak@camlintechnologies.com, tomasz.mon@camlingroup.com Cc: linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, hugo@hugovil.com, linux-gpio@vger.kernel.org, Hugo Villeneuve , stable@vger.kernel.org, Conor Dooley , Lech Perczak Date: Wed, 7 Jun 2023 10:05:19 -0400 Message-Id: <20230607140525.833982-6-hugo@hugovil.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230607140525.833982-1-hugo@hugovil.com> References: <20230607140525.833982-1-hugo@hugovil.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 70.80.174.168 X-SA-Exim-Mail-From: hugo@hugovil.com Subject: [PATCH v8 05/10] 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-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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. Cc: # 6.1.x Signed-off-by: Hugo Villeneuve Acked-by: Conor Dooley Reviewed-by: Lech Perczak --- .../bindings/serial/nxp,sc16is7xx.txt | 46 +++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt b/D= ocumentation/devicetree/bindings/serial/nxp,sc16is7xx.txt index 0fa8e3e43bf8..1a7e4bff0456 100644 --- a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt +++ b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt @@ -23,6 +23,9 @@ Optional properties: 1 =3D 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 por= t that + should have shared GPIO lines configured as + modem control lines. =20 Example: sc16is750: sc16is750@51 { @@ -35,6 +38,26 @@ Example: #gpio-cells =3D <2>; }; =20 + sc16is752: sc16is752@53 { + compatible =3D "nxp,sc16is752"; + reg =3D <0x53>; + clocks =3D <&clk20m>; + interrupt-parent =3D <&gpio3>; + interrupts =3D <7 IRQ_TYPE_EDGE_FALLING>; + nxp,modem-control-line-ports =3D <1>; /* Port 1 as modem control lines */ + gpio-controller; /* Port 0 as GPIOs */ + #gpio-cells =3D <2>; + }; + + sc16is752: sc16is752@54 { + compatible =3D "nxp,sc16is752"; + reg =3D <0x54>; + clocks =3D <&clk20m>; + interrupt-parent =3D <&gpio3>; + interrupts =3D <7 IRQ_TYPE_EDGE_FALLING>; + nxp,modem-control-line-ports =3D <0 1>; /* Ports 0 and 1 as modem contro= l lines */ + }; + * spi as bus =20 Required properties: @@ -59,6 +82,9 @@ Optional properties: 1 =3D 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 por= t that + should have shared GPIO lines configured as + modem control lines. =20 Example: sc16is750: sc16is750@0 { @@ -70,3 +96,23 @@ Example: gpio-controller; #gpio-cells =3D <2>; }; + + sc16is752: sc16is752@1 { + compatible =3D "nxp,sc16is752"; + reg =3D <1>; + clocks =3D <&clk20m>; + interrupt-parent =3D <&gpio3>; + interrupts =3D <7 IRQ_TYPE_EDGE_FALLING>; + nxp,modem-control-line-ports =3D <1>; /* Port 1 as modem control lines */ + gpio-controller; /* Port 0 as GPIOs */ + #gpio-cells =3D <2>; + }; + + sc16is752: sc16is752@2 { + compatible =3D "nxp,sc16is752"; + reg =3D <2>; + clocks =3D <&clk20m>; + interrupt-parent =3D <&gpio3>; + interrupts =3D <7 IRQ_TYPE_EDGE_FALLING>; + nxp,modem-control-line-ports =3D <0 1>; /* Ports 0 and 1 as modem contro= l lines */ + }; --=20 2.30.2