From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752763AbaI2Iuu (ORCPT ); Mon, 29 Sep 2014 04:50:50 -0400 Received: from filter1.ibarracuda.nl ([83.247.7.10]:49761 "EHLO filter1.ibarracuda.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751742AbaI2Iur (ORCPT ); Mon, 29 Sep 2014 04:50:47 -0400 X-ASG-Debug-ID: 1411980644-0759e74bdc521d40002-xx1T2L X-Barracuda-Envelope-From: Frans.Klaver@xsens.com X-Barracuda-AUTH-User: xsenscom X-Barracuda-Apparent-Source-IP: 87.249.116.215 Date: Mon, 29 Sep 2014 10:50:42 +0200 From: Frans Klaver To: Sebastian Andrzej Siewior CC: Heikki Krogerus , Peter Hurley , , , , , , , , Alan Cox Subject: Re: [PATCH 09/16] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx Message-ID: <20140929085042.GA13952@ci00147.xsens-tech.local> X-ASG-Orig-Subj: Re: [PATCH 09/16] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx References: <2cf997d9-e7de-465b-915d-3a0a5e7b95f7@email.android.com> <54129F6C.7040508@linutronix.de> <20140912094010.GE28458@ci00147.xsens-tech.local> <5412C21A.8020203@linutronix.de> <20140912102816.GF28458@ci00147.xsens-tech.local> <541716DC.9020904@linutronix.de> <20140917102812.GA20438@ci00147.xsens-tech.local> <20140921204100.GA10111@linutronix.de> <20140922092853.GH20438@ci00147.xsens-tech.local> <20140925151403.GH19396@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline In-Reply-To: <20140925151403.GH19396@linutronix.de> User-Agent: Mutt/1.5.23 (2014-03-12) X-Originating-IP: [172.16.11.160] X-Barracuda-Connect: rev-215.116.249.87.virtu.nl[87.249.116.215] X-Barracuda-Start-Time: 1411980644 X-Barracuda-Encrypted: AES128-SHA X-Barracuda-URL: http://filter1.ibarracuda.nl:8000/cgi-mod/mark.cgi X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=5.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.10015 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 25, 2014 at 05:14:03PM +0200, Sebastian Andrzej Siewior wrote: > * Frans Klaver | 2014-09-22 11:28:54 [+0200]: > > >I guess then we'd still have to answer the question why the yocto build > >calls set_termios() so often, but that's not on you then. Did you notice > >it even changing settings? We might want to fix this even if the kernel > >should be able to cope. > > could you please test uart_v10_pre3? I dropped a few register sets and > delayed the register update until TX-DMA is complete. I am traveling > currently and have only my boneblack and it passes my limited testing. > If it solves your problems, too then I would address Heikki's latest > comments and prepare the final v10 (and I hope I didn't break beagle > board in between). This version fixes the console things for us. It also increases the amount of data we can push over the serial port. If I push the data towards our requirements, we're not there yet. I get the "too much work for irq" notice still. However, I don't think you'd need to be fixing that in this series (or at all). We had similar issues there with omap-serial as well. As far as I'm concerned, this is Tested-by: Frans Klaver Thanks, Frans