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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_2 autolearn=unavailable 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 CC5F7CA9EA0 for ; Fri, 25 Oct 2019 10:00:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA87A21D7B for ; Fri, 25 Oct 2019 10:00:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2501943AbfJYKAN (ORCPT ); Fri, 25 Oct 2019 06:00:13 -0400 Received: from mail-out.m-online.net ([212.18.0.9]:60329 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2501929AbfJYKAM (ORCPT ); Fri, 25 Oct 2019 06:00:12 -0400 Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 47003F62bqz1qql6; Fri, 25 Oct 2019 12:00:09 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 47003F4PlJz1qqkV; Fri, 25 Oct 2019 12:00:09 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id ovzOP7q8XvP5; Fri, 25 Oct 2019 12:00:08 +0200 (CEST) X-Auth-Info: YbElbo8Z68PG9NQbk7OPA01W/n0q3PIO9eLcf6q6MeQ= Received: from jawa (85-222-111-42.dynamic.chello.pl [85.222.111.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Fri, 25 Oct 2019 12:00:08 +0200 (CEST) Date: Fri, 25 Oct 2019 12:00:00 +0200 From: Lukasz Majewski To: Shawn Guo Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Mark Rutland , Rob Herring , Stefan Agner , Pengutronix Kernel Team , Sascha Hauer , Robin Murphy Subject: Re: [PATCH v2] dts: Disable DMA support on the BK4 vf610 device's fsl_lpuart driver Message-ID: <20191025120000.5dbb837d@jawa> In-Reply-To: <20191025085515.GH3208@dragon> References: <20191010090802.16383-1-lukma@denx.de> <20191025085515.GH3208@dragon> Organization: denx.de X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; boundary="Sig_/By24V4SN7mPcjm/avn3Dc5F"; protocol="application/pgp-signature" Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org --Sig_/By24V4SN7mPcjm/avn3Dc5F Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi Shawn, > On Thu, Oct 10, 2019 at 11:08:02AM +0200, Lukasz Majewski wrote: > > This change disables the DMA support (RX/TX) on the NXP's fsl_lpuart > > driver - the PIO mode is used instead. This change is necessary for > > better robustness of BK4's device use cases with many potentially > > interrupted short serial transfers. > >=20 > > Without it the driver hangs when some distortion happens on UART > > lines. > >=20 > > Signed-off-by: Lukasz Majewski > > Suggested-by: Robin Murphy =20 >=20 > Subject prefix should be 'ARM: dts: ...'. I fixed it up and applied > the patch. >=20 > Shawn Thanks :-) Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de --Sig_/By24V4SN7mPcjm/avn3Dc5F Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEgAyFJ+N6uu6+XupJAR8vZIA0zr0FAl2yx6AACgkQAR8vZIA0 zr1f0AgA09kZumpnsPlEwl87PkX6natOW7hAKLdpkClGwO/Iwc7eMgFOoVZmRoL9 U5wQZVVhjwr7CVtiwg16KpE5l5gh1+I1hc8GCb7uKByzMFGFbAKT5IIOcIQYLFpt 7WMYRGp9T+hAw3SPKoj8zqNYceFS+b/ZJ9F6PENWrQXmY9L5yMB68dEJknGGf0Hu ZYi2MIBT2JXSRcgoC+EYZA/8OllXEATMCSZxIcc1aZdcPqWfdS8fE3l2AAafle99 JcIfbjMf1RAn/aLtS73a7Dggmv8Rk+QPKj2qjrrmXnel680QVgwcMINjd0ihbq+4 vdq3ph01H/WlHpjHKKcqjHxAEn4P/w== =6lWc -----END PGP SIGNATURE----- --Sig_/By24V4SN7mPcjm/avn3Dc5F--