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=-9.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 121EFC433E6 for ; Thu, 31 Dec 2020 20:38:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CA8252158C for ; Thu, 31 Dec 2020 20:38:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726317AbgLaUid (ORCPT ); Thu, 31 Dec 2020 15:38:33 -0500 Received: from mail-ot1-f45.google.com ([209.85.210.45]:32950 "EHLO mail-ot1-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726302AbgLaUic (ORCPT ); Thu, 31 Dec 2020 15:38:32 -0500 Received: by mail-ot1-f45.google.com with SMTP id b24so18865135otj.0; Thu, 31 Dec 2020 12:38:17 -0800 (PST) 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=33mJBDwSaLXSZq9uIF9tHwsSa4/sQ0g8ozhF1F4Sc6E=; b=nMKNLOWz7RJaZORa+VGpDjOHTGM7NJ5DUx3fVmYmsxCZQxtktvO7/NT+VmZA4AybcR 4T49EoLfLCGWHp1kC+B44x/gv+aEoMCHBR1+x0eWfpNe8qEb/0m3nAXw/pYNo7VdOO5L tsOUrA/3AlGRTBJT7dWCNPI9CAFy70h7FUVyVZKQX2KeDrI/XaarAN9bxLx+50fyHJfG G7ygRGXXNcPoOEcXx82vIY1CtZJTJeVCfAPpK9fmM5Nr0yQFCPMYGSiEh6cwLQVICRMa +mulLIYNT5Rx/VVYCAQxmW5HZSl7NSuWBbZZzFputHRuzY8bwr6HJy1Wn1njWpyM3EI4 1pkA== X-Gm-Message-State: AOAM532NHyNGxJkQUSHPz6b7FHeG8RZVT8E3DtsFHJ4gSn51Q9F215d8 yywjnHbRFiD93oXZF0Jb2w== X-Google-Smtp-Source: ABdhPJzuS6mrQN9/NoCc6lwKj14DfBKazPXicm33pfgZnY6bLolOGpW9iV1iY/aGl6PBWH0MZYg+NQ== X-Received: by 2002:a05:6830:1252:: with SMTP id s18mr42780191otp.4.1609447071769; Thu, 31 Dec 2020 12:37:51 -0800 (PST) Received: from robh.at.kernel.org ([64.188.179.253]) by smtp.gmail.com with ESMTPSA id j126sm11281512oib.13.2020.12.31.12.37.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Dec 2020 12:37:50 -0800 (PST) Received: (nullmailer pid 2321274 invoked by uid 1000); Thu, 31 Dec 2020 20:37:49 -0000 Date: Thu, 31 Dec 2020 13:37:49 -0700 From: Rob Herring To: Erwan Le Ray Cc: Maxime Coquelin , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, Greg Kroah-Hartman , Fabrice Gasnier , Alexandre Torgue , linux-kernel@vger.kernel.org, Rob Herring , Valentin Caron , linux-serial@vger.kernel.org, Jiri Slaby Subject: Re: [PATCH 5/8] dt-bindings: serial: stm32: update rts-gpios and cts-gpios Message-ID: <20201231203749.GA2321239@robh.at.kernel.org> References: <20201218190020.1572-1-erwan.leray@foss.st.com> <20201218190020.1572-6-erwan.leray@foss.st.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201218190020.1572-6-erwan.leray@foss.st.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Fri, 18 Dec 2020 20:00:16 +0100, Erwan Le Ray wrote: > Update rts-gpios and cts-gpios: > - remove max-items as already defined in serial.yaml > - add a note describing rts-gpios and cts-gpios usage with stm32 > > Document the use of cts-gpios and rts-gpios for flow control in STM32 UART > controller. These properties can be used instead of 'uart-has-rtscts' or > 'st,hw-flow-ctrl' (deprecated) for making use of any gpio pins for flow > control instead of dedicated pins. > It should be noted that both cts-gpios/rts-gpios and 'uart-has-rtscts' or > 'st,hw-flow-ctrl' (deprecated) properties cannot co-exist in a design. > > Signed-off-by: Erwan Le Ray > Acked-by: Rob Herring