From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751590AbaHQUfW (ORCPT ); Sun, 17 Aug 2014 16:35:22 -0400 Received: from www.linutronix.de ([62.245.132.108]:35037 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751468AbaHQUfU convert rfc822-to-8bit (ORCPT ); Sun, 17 Aug 2014 16:35:20 -0400 Date: Sun, 17 Aug 2014 22:35:12 +0200 From: Sebastian Andrzej Siewior To: Tony Lindgren Cc: Lennart Sorensen , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, balbi@ti.com, Vinod Koul , Greg Kroah-Hartman Subject: Re: [PATCH v7] 8250-core based serial driver for OMAP + DMA Message-ID: <20140817203512.GA24330@linutronix.de> References: <1408124563-31541-1-git-send-email-bigeasy@linutronix.de> <20140815181704.GH17769@csclub.uwaterloo.ca> <53EE5BF8.3010007@linutronix.de> <20140815202826.GC9239@atomide.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8BIT In-Reply-To: <20140815202826.GC9239@atomide.com> X-Key-Id: 97C4700B X-Key-Fingerprint: 09E2 D1F3 9A3A FF13 C3D3 961C 0688 1C1E 97C4 700B User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Tony Lindgren | 2014-08-15 13:28:27 [-0700]: >> It configured the trigger levels to 1 for RX and 16 for TX. > >Hmm that weird RX trigger level is a workaround for lost characters. > >See commit 0ba5f66836 (tty: serial: OMAP: use a 1-byte RX FIFO >threshold in PIO mode :) > >There's paste test in that commit, I wonder if the 8250 drivers >can deal with it any better? I recall that I used it as a console and didn't see any missing chars. I will try test but I am traveling this week… >Regards, > >Tony Sebastian