From patchwork Thu Jun 1 20:18:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugo Villeneuve X-Patchwork-Id: 687865 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 C6FF6C77B7E for ; Thu, 1 Jun 2023 20:19:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231826AbjFAUTF (ORCPT ); Thu, 1 Jun 2023 16:19:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48278 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231545AbjFAUTC (ORCPT ); Thu, 1 Jun 2023 16:19:02 -0400 Received: from mail.hugovil.com (mail.hugovil.com [162.243.120.170]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CCC7D1; Thu, 1 Jun 2023 13:19:00 -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=Oa5D2/22yJ/hGuV1pAfsP/G9NZ MtZ7RpKRGlablVyof1pn52zeRLIRvXdaGjcYzWq7S/e8g1SxLOUkLrj1N+h5bbzj/wIztPsaRjwJx 2RdAuLhLiEFwMq9OJPUhY8kqEcDp1K6LCKtJ4kmlb4G0PwYevwU27SUSdhappaxYKlq8=; Received: from modemcable168.174-80-70.mc.videotron.ca ([70.80.174.168]:39204 helo=pettiford.lan) by mail.hugovil.com with esmtpa (Exim 4.92) (envelope-from ) id 1q4ol2-000686-S0; Thu, 01 Jun 2023 16:18:53 -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, tomasz.mon@camlingroup.com, l.perczak@camlintechnologies.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: Thu, 1 Jun 2023 16:18:39 -0400 Message-Id: <20230601201844.3739926-5-hugo@hugovil.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230601201844.3739926-1-hugo@hugovil.com> References: <20230601201844.3739926-1-hugo@hugovil.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 70.80.174.168 X-SA-Exim-Mail-From: hugo@hugovil.com Subject: [PATCH v6 4/9] 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: devicetree@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. 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/Documentation/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 = 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 +38,26 @@ Example: #gpio-cells = <2>; }; + sc16is752: sc16is752@53 { + compatible = "nxp,sc16is752"; + reg = <0x53>; + 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>; + }; + + sc16is752: sc16is752@54 { + compatible = "nxp,sc16is752"; + reg = <0x54>; + clocks = <&clk20m>; + interrupt-parent = <&gpio3>; + interrupts = <7 IRQ_TYPE_EDGE_FALLING>; + nxp,modem-control-line-ports = <0 1>; /* Ports 0 and 1 as modem control lines */ + }; + * spi as bus Required properties: @@ -59,6 +82,9 @@ 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 +96,23 @@ Example: gpio-controller; #gpio-cells = <2>; }; + + sc16is752: sc16is752@1 { + compatible = "nxp,sc16is752"; + reg = <1>; + 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>; + }; + + sc16is752: sc16is752@2 { + compatible = "nxp,sc16is752"; + reg = <2>; + clocks = <&clk20m>; + interrupt-parent = <&gpio3>; + interrupts = <7 IRQ_TYPE_EDGE_FALLING>; + nxp,modem-control-line-ports = <0 1>; /* Ports 0 and 1 as modem control lines */ + };