From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 86120C433DF for ; Thu, 28 May 2020 20:50:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 581132074B for ; Thu, 28 May 2020 20:50:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590699042; bh=36x+FSxQLLXtZZ/ZrL/q8iSayQDTf9H3L9O43iR4vH0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=mDfRtFPTxxRhN+lDby1qVqSEu6dkomTHmK3pGx/zUNAbaBFxneEgQS9ppLIG8pS21 G9iJWIxRjHBNGBekARhYpK/IalhwiifQ3wObkckPiLC4bBj+gEkVWMMgHzF4xl1Lt1 tWwBEp9wscwqiEdPRMH5luROyL61+xBKC4RzZcGw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407339AbgE1Uul (ORCPT ); Thu, 28 May 2020 16:50:41 -0400 Received: from mail-io1-f68.google.com ([209.85.166.68]:35986 "EHLO mail-io1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2407344AbgE1Uuj (ORCPT ); Thu, 28 May 2020 16:50:39 -0400 Received: by mail-io1-f68.google.com with SMTP id y18so11271566iow.3; Thu, 28 May 2020 13:50:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=0gpSBvU7Eq2fXFdQdQngmNs7MJbK+QnxcEs9pUZUM6U=; b=tt2ioBPMqBOwQY8IQm2xOjIYeW8lFAmI2/T521eEp6ffC2LoL4n9NiZmq6yACBfZO+ ZgcjZKQw2Z5BDR4tCfXyYkWHfhHBnmh44di/0mumSXLKHQT9zmXBPtYUFhljsAxAfyEj u6yuD+AKF4F5CLxi98hNY1w4cDcwdKwA/HR3ps2EgLCRoEBigVNrbiy5ctWk6xGgaZsP Yr1xlJQekclgX14u/C6UuM6MG5tEUly+3Pe9nmTEJD2/AZp67d8Z+vTK8Vq3fvdD7wLS YZDcGTdgCMPWHJd+89Xco0i8WlLjXq3BSPMTnwiwsr2oNm0mIojCejQxteVGe1lf0Ia/ PlIg== X-Gm-Message-State: AOAM531jUqisZDbliCbc/iBgtch25qGgsCijYySRdP5luDDTt8K32rWu U3q1SllihuTUyb+kHaRvDQ== X-Google-Smtp-Source: ABdhPJyd8/DPXzsxw9RIxmjqQyQZlAxV9pIk6OfK0yzaA7cdcSEsZFdOcAC+qFs8Vp3LgSG0VWobGg== X-Received: by 2002:a02:3e06:: with SMTP id s6mr4201198jas.57.1590699038478; Thu, 28 May 2020 13:50:38 -0700 (PDT) Received: from xps15 ([64.188.179.252]) by smtp.gmail.com with ESMTPSA id h5sm3614341ile.35.2020.05.28.13.50.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 May 2020 13:50:37 -0700 (PDT) Received: (nullmailer pid 653204 invoked by uid 1000); Thu, 28 May 2020 20:50:36 -0000 Date: Thu, 28 May 2020 14:50:36 -0600 From: Rob Herring To: Lukas Wunner Cc: devicetree@vger.kernel.org, Jan Kiszka , "Matwey V. Kornilov" , Greg Kroah-Hartman , Andy Shevchenko , Christoph Muellner , Jiri Slaby , linux-serial@vger.kernel.org, Heiko Stuebner , Giulio Benetti , Rob Herring Subject: Re: [PATCH v3 1/2] dt-bindings: serial: Add binding for rs485 bus termination GPIO Message-ID: <20200528205036.GA653137@bogus> References: <4f4411895dc52c846f766e7f7207ec412c4811b6.1589811297.git.lukas@wunner.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4f4411895dc52c846f766e7f7207ec412c4811b6.1589811297.git.lukas@wunner.de> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Mon, 18 May 2020 16:45:01 +0200, Lukas Wunner wrote: > Commit e8759ad17d41 ("serial: uapi: Add support for bus termination") > introduced the ability to enable rs485 bus termination from user space. > So far the feature is only used by a single driver, 8250_exar.c, using a > hardcoded GPIO pin specific to Siemens IOT2040 products. > > Provide for a more generic solution by allowing specification of an > rs485 bus termination GPIO pin in the device tree. An upcoming commit > implements support for this pin for any 8250 driver. The binding is > used in device trees of the "Revolution Pi" PLCs offered by KUNBUS. > > [Heiko Stuebner converted the binding to YAML, hence his Signed-off-by.] > > Signed-off-by: Heiko Stuebner > Signed-off-by: Lukas Wunner > Cc: Jan Kiszka > --- > Documentation/devicetree/bindings/serial/rs485.yaml | 4 ++++ > 1 file changed, 4 insertions(+) > Reviewed-by: Rob Herring