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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 88EE2C6FD1C for ; Fri, 24 Mar 2023 08:58:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Subject:From:Cc:To:MIME-Version:Date:Message-ID: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=5N1aDp5AHx8p3PHHAk/KmAbrsyCa2T0RomQDOmbIrlc=; b=nAfqSb6mYjwnBquTXvBaD4NMAW 84Q39+2hBHJhQUNipzLDZnH6NXp9o8880Ojk4WM7gps3vYMp+N/DswikKAFTYI1ORYPkHq47Snoud cGasxjzUGFB7Ekh6eW6tY3UPXCgE3Nf/Bnwnw2sNdCeIqePo65GZcRMssnp1BK36q5bsi/5Q/O1mW sODuP5hYzx0HqwtEsnR5C9JA53pkUx6LwoAXcDyChTwDXsONwIva6Ho2/sUYJDV+Ysfzu9RKV2aX9 KEl1xM7WN2KPMsUE+0amVorYjWcIRMvBUSPDg6ZEaODn8G6xgyI48YavsQvJvRU6d6ezBX8qxW07d gjhG2wnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pfdFS-003x9r-0F; Fri, 24 Mar 2023 08:58:10 +0000 Received: from mout.kundenserver.de ([217.72.192.74]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pfdFO-003x6Y-2Z for linux-arm-kernel@lists.infradead.org; Fri, 24 Mar 2023 08:58:08 +0000 Received: from [192.168.1.141] ([37.4.248.35]) by mrelayeu.kundenserver.de (mreue109 [212.227.15.183]) with ESMTPSA (Nemesis) id 1MvJsF-1qWDxt1O1h-00rDzC; Fri, 24 Mar 2023 09:57:56 +0100 Message-ID: <2c29454b-9369-4360-8eb4-c151f59460cb@i2se.com> Date: Fri, 24 Mar 2023 09:57:55 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Content-Language: en-US To: =?UTF-8?Q?Tomasz_Mo=c5=84?= , Greg Kroah-Hartman , Jiri Slaby Cc: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Sergey Organov , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-serial@vger.kernel.org, Linux ARM , Shawn Guo , Stefan Wahren From: Stefan Wahren Subject: Regression: serial: imx: overrun errors on debug UART X-Provags-ID: V03:K1:ZEjzmc/onqBH6bcTalMaZKTG+xLG8wrB2968B2R5xruAGpYk+mW 70HyPSvCr0eBujHYn8IbubEvrzMJPN4dq9c4RoXsUzA7WT6Dv7CmU/znAaF3XqPkCA3Ocl0 0LoPGq/aaWTCqmMeSn6DvX3U/+pT31fuMS9RlIZYQK5jAXhRFC7mgYZsicqjNFHhlsFcGhk Yry8Lrjmbw+JC+KLvxtjA== UI-OutboundReport: notjunk:1;M01:P0:wdEvYdhYbJA=;FKeqpK4saOVDkBgKQ56gENnMQ1y oxVPMUS+TdO2NPsK90tGxL1TpxOIYsoLvhUHFfLQ1QfUJtJDy2Rx5FTEfnFZVa6ePiQgvG5jO yeGz83eA6FmzCfFx5fpqG4T3/Fj26aAId4t/AyOsSiF7z2HVN1I4V7c6n2/YfPNjXac2t1nPr q7D4X3fJ0YxVr0WGvYbUis6A9ZiyTygq2YWtuSTdDCb/OTFdnM1WC0tan9FtaMUNE849kliiR GDHFCWPtIFCTeWPj1evd7/gGv9hQJPdmyYQZGZoP3+6KKkSPkdPpPjqGK7aYV1sUTIbMy8uTg 22tY60nkqnxJjaxynuOsVgjWD0kMOOTsl++tvfVktX3IlFJaqkXKjFuKAU4NmI6seLCP7bX1t uxfsc6KIIUdCSYBacqQ7dPjD7m0owHVqDKm/sAj4YrpvkcZjxeDP5ENje+HIS5pVhuXLF+uud npVBYJLGSHBsnKepeFn/kjrkM3qz5k/XQiUhlWeD3KAY5g49F148ODIrYYHmbPW0fmjj9iisG jOY8VmtZPGYP8x1ohMSOEG69wwEg1U1eNmL8+vDzHRXvf2JRYBOOhgLvDgTgJassKRr3jUclI a4+8HkfdyKGjhhzUvnxwK860z93UU4VFYuiZfeWnnD0fC4se70JVVMsauEEVJhPlinubspcd/ Ln9ZebK8YCkcAalXFGv/fa/4xC+Tcq+cJ2kHznLekg== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230324_015807_129421_9FCCF1B6 X-CRM114-Status: UNSURE ( 7.54 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, after switching to Linux 6.1.21 on our Tarragon board (i.MX6ULL SoC), we experience the following issues with the debug UART (115200 baud, 8N1, no hardware flow control): - overrun errors if we paste in multiple text lines while system is idle - no reaction to single key strokes while system is on higher load After reverting 7a637784d517 ("serial: imx: reduce RX interrupt frequency") the issue disappear. Maybe it's worth to mention that the Tarragon board uses two additional application UARTs with similiar baud rates (9600 - 115200 baud, no hardware flow control) for RS485 communication, but there are no overrun errors (with and without the mention change). Best regards _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel