From: "Lennart Sorensen" <lsorense@csclub.uwaterloo.ca>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
tony@atomide.com, balbi@ti.com, gregkh@linuxfoundation.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH 11/13] arm: dts: dra7: add DMA properties for UART
Date: Tue, 4 Nov 2014 20:15:06 -0500 [thread overview]
Message-ID: <20141105011506.GG24112@csclub.uwaterloo.ca> (raw)
In-Reply-To: <20141104210315.GF24112@csclub.uwaterloo.ca>
On Tue, Nov 04, 2014 at 04:03:15PM -0500, Lennart Sorensen wrote:
> So it seems to be working on our board so far. Will stress test it
> some more. No DMA of course for now, but oh well.
Well 4 hours running with multiple reboots (our testsuite reboots every
30 minutes to test the watchdog). So far it has only lost 70 bytes out
of 40MB of data sent between uart7 and uart8 (and we are pretty sure
the serial test has a small bug that causes a few bytes to be lost right
after a reboot sometimes).
The reason I am even trying the new driver today is that we were seeing
soft lockups on the CPU whenever the serial ports were being tested,
usually in less than 5 minutes, so 4 hours without a lockup is a good
sign. No idea what might be wrong with the old omap serial driver, but
it seems something is (unless of course we managed to break it somehow
when we tried to solve its habit of dropping characters).
I think I will stick with this new driver. Better long term future
anyhow.
--
Len Sorensen
next prev parent reply other threads:[~2014-11-05 1:15 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-29 18:06 [PATCH 00/13 v10] omap 8250 based UART + DMA Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 01/13] tty: serial: 8250: Fix wording in runtime-PM comments Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 02/13] tty: serial: 8250: make serial8250_console_setup() non _init Sebastian Andrzej Siewior
2014-09-30 20:27 ` Peter Hurley
2014-09-29 18:06 ` [PATCH 03/13] tty: serial: Add 8250-core based omap driver Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 04/13] tty: serial: 8250_dma: handle error on TX submit Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 05/13] tty: serial: 8250_dma: keep own book keeping about RX transfers Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 06/13] tty: serial: 8250: allow to use custom DMA implementation Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 07/13] tty: serial: 8250_omap: add custom DMA-TX callback Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 08/13] tty: serial: 8250_omap: add custom DMA-RX callback Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 09/13] dmaengine: edma: check for echan->edesc => NULL in edma_dma_pause() Sebastian Andrzej Siewior
2014-10-01 12:00 ` Peter Ujfalusi
2014-10-15 15:27 ` Vinod Koul
2014-10-15 15:28 ` Vinod Koul
2014-09-29 18:06 ` [PATCH 10/13] arm: dts: am33xx: add DMA properties for UART Sebastian Andrzej Siewior
2014-09-29 18:06 ` [PATCH 11/13] arm: dts: dra7: " Sebastian Andrzej Siewior
2014-11-04 17:02 ` Lennart Sorensen
2014-11-04 17:06 ` Sebastian Andrzej Siewior
2014-11-04 17:21 ` Lennart Sorensen
2014-11-04 18:32 ` Javier Martinez Canillas
2014-11-04 18:48 ` Nishanth Menon
2014-11-04 19:00 ` Lennart Sorensen
2014-11-04 18:33 ` Lennart Sorensen
2014-11-04 21:03 ` Lennart Sorensen
2014-11-05 1:15 ` Lennart Sorensen [this message]
2014-11-05 8:11 ` Sebastian Andrzej Siewior
2014-11-05 15:33 ` Lennart Sorensen
2014-11-05 16:20 ` Lennart Sorensen
2014-11-05 16:30 ` Sebastian Andrzej Siewior
2014-11-05 19:43 ` Lennart Sorensen
2014-11-13 18:34 ` Sebastian Andrzej Siewior
2014-11-13 22:08 ` Lennart Sorensen
2014-09-29 18:06 ` [PATCH 12/13] tty: serial: 8250: omap: add custom irq handling Sebastian Andrzej Siewior
2014-10-09 13:19 ` Heikki Krogerus
2014-09-29 18:06 ` [PATCH 13/13] tty: serial: 8250: omap: add dma support Sebastian Andrzej Siewior
2014-10-02 16:43 ` [PATCH 00/13 v10] omap 8250 based UART + DMA Tony Lindgren
2014-10-02 23:19 ` Sebastian Andrzej Siewior
2014-10-03 13:08 ` Peter Hurley
2014-11-06 3:14 ` Greg KH
2014-11-06 10:27 ` Sebastian Andrzej Siewior
2014-11-10 17:24 ` Tony Lindgren
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