From: Kevin Hilman <khilman@ti.com>
To: NeilBrown <neilb@suse.de>
Cc: Joe Woodward <jw@terrafix.co.uk>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
Paul Walmsley <paul@pwsan.com>,
t-kristo@ti.com, govindraj.r@ti.com, linux-omap@vger.kernel.org
Subject: Re: DSS2/PM on 3.2 broken?
Date: Mon, 23 Jan 2012 14:11:16 -0800 [thread overview]
Message-ID: <87k44ikr23.fsf@ti.com> (raw)
In-Reply-To: <20120121231216.16c7e318@notabene.brown> (NeilBrown's message of "Sat, 21 Jan 2012 23:12:16 +1100")
NeilBrown <neilb@suse.de> writes:
> On Thu, 19 Jan 2012 16:22:37 -0800 Kevin Hilman <khilman@ti.com> wrote:
>
>> NeilBrown <neilb@suse.de> writes:
>>
>> > On Thu, 19 Jan 2012 11:37:39 -0800 Kevin Hilman <khilman@ti.com> wrote:
>> >
>> >> "Joe Woodward" <jw@terrafix.co.uk> writes:
>> >>
[...]
>> At least this part is expected.
>>
>> In the kernel you're using the UART clocks are enabled/disabled during
>> the idle path depending on the low-power state being targetted, so would
>> expect to see lots of UART clock gating going on.
>
> Even though uarts 1,2,4 aren't even in use?
Yes. Our UART idle management before v3.3 was, um... a disaster.
> Maybe this is fixed in 3.3?
As of v3.3, the UARTs are managed independently using runtime PM
autosupend, so only UART that are in use should be coming on and back
off again.
However, as Paul has recently posted some UART fixes, you'll see that we
have a few kinks to work out in the UART driver as well.
Kevin
next prev parent reply other threads:[~2012-01-23 22:11 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-09 12:46 DSS2/PM on 3.2 broken? Joe Woodward
2012-01-09 21:08 ` NeilBrown
2012-01-10 9:58 ` Joe Woodward
2012-01-11 13:43 ` Paul Walmsley
2012-01-11 14:22 ` Archit
2012-01-11 15:15 ` Joe Woodward
2012-01-11 15:52 ` Archit
2012-01-11 16:13 ` Joe Woodward
2012-01-11 16:54 ` Archit
2012-01-12 9:28 ` Tomi Valkeinen
2012-01-12 9:30 ` Tomi Valkeinen
2012-01-12 9:51 ` Tomi Valkeinen
2012-01-11 22:59 ` NeilBrown
2012-01-13 10:05 ` Paul Walmsley
2012-01-13 11:20 ` NeilBrown
2012-01-13 11:31 ` Paul Walmsley
2012-01-13 23:09 ` NeilBrown
2012-01-13 23:35 ` Paul Walmsley
2012-01-17 21:24 ` NeilBrown
2012-01-22 0:07 ` Paul Walmsley
2012-01-22 11:30 ` NeilBrown
2012-01-24 10:37 ` OMAP HDQ: was " NeilBrown
2012-01-26 14:19 ` Paul Walmsley
2012-01-27 22:35 ` NeilBrown
2012-01-27 22:58 ` Paul Walmsley
2012-01-28 0:40 ` NeilBrown
2012-01-28 6:02 ` Paul Walmsley
2012-02-01 7:51 ` NeilBrown
2012-02-01 18:36 ` Paul Walmsley
2012-01-18 7:13 ` Tomi Valkeinen
2012-01-18 11:15 ` NeilBrown
2012-01-18 11:42 ` Tomi Valkeinen
2012-01-18 20:30 ` NeilBrown
2012-01-19 10:17 ` Joe Woodward
2012-01-19 10:40 ` Tomi Valkeinen
2012-01-19 11:29 ` Joe Woodward
2012-01-19 11:36 ` Tomi Valkeinen
2012-01-19 12:21 ` Joe Woodward
2012-01-19 14:52 ` Tomi Valkeinen
2012-01-19 19:37 ` Kevin Hilman
2012-01-19 21:05 ` NeilBrown
2012-01-20 0:22 ` Kevin Hilman
2012-01-21 12:12 ` NeilBrown
2012-01-23 22:11 ` Kevin Hilman [this message]
2012-01-25 0:32 ` NeilBrown
2012-01-13 11:34 ` Govindraj
2012-01-13 13:23 ` Paul Walmsley
2012-01-13 19:21 ` Kevin Hilman
2012-01-13 22:37 ` Kevin Hilman
2012-01-13 23:06 ` Paul Walmsley
2012-01-13 23:34 ` Paul Walmsley
2012-01-14 1:17 ` NeilBrown
2012-01-14 1:28 ` Paul Walmsley
2012-01-13 23:39 ` Paul Walmsley
2012-01-13 11:19 ` Paul Walmsley
2012-01-11 13:32 ` Paul Walmsley
2012-01-12 16:42 ` Tomi Valkeinen
2012-01-12 22:40 ` Kevin Hilman
2012-01-13 5:29 ` Tomi Valkeinen
2012-01-13 19:30 ` Kevin Hilman
2012-01-16 11:11 ` Tomi Valkeinen
2012-01-19 19:24 ` Kevin Hilman
2012-01-20 7:16 ` Tomi Valkeinen
2012-01-20 18:06 ` Kevin Hilman
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