Re: patch "tty: serial: OMAP: ensure FIFO levels are set correctly in non-DMA" added to tty tree
From: Grazvydas Ignotas <hidden>
Date: 2012-02-03 11:42:13
Also in:
linux-arm-kernel, linux-serial
On Fri, Feb 3, 2012 at 11:54 AM, NeilBrown [off-list ref] wrote:
On Thu, 2 Feb 2012 22:45:53 -0700 (MST) Paul Walmsley [off-list ref] wrote:quoted
On Fri, 3 Feb 2012, NeilBrown wrote:quoted
then CPUIDLE enters lower states and I think it uses less power but I sometimes lose the first char I type (that is known) but also I sometimes get corruption on output.I don't see any output corruption on 35xx BeagleBoard, either with or without these patches. So this is presumably a 37xx-centric problem, and unrelated to these patches, I would guess.Maybe it is 37xx specific. I think this is a DM3730.
Not sure if it's the same problem but with 3530 on 3.2 with sleep_timeout set, I usually get first char dropped (as expected) but sometimes I get corrupted char instead too. Corrupt char seems to almost always happen if I set cpufreq to powersave, on performace it's almost always ok, so maybe it's some timing problem, -- Gražvydas -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html