From: Romit Dasgupta <romit@ti.com>
To: Jean Pihet <jpihet@mvista.com>
Cc: "Reddy, Teerth" <teerth@ti.com>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>
Subject: Re: [PATCH] OMAP3: PM: Dynamic calculation of SDRC clock stabilization delay
Date: Fri, 11 Dec 2009 19:37:47 +0530 [thread overview]
Message-ID: <4B225233.2020601@ti.com> (raw)
In-Reply-To: <200912111414.41310.jpihet@mvista.com>
Jean Pihet wrote:
> On Friday 11 December 2009 13:05:37 Reddy, Teerth wrote:
>> Reposting the patch with proper format
>>
>> From: Teerth Reddy <teerth@ti.com>
>>
>> This patch sets the dpll3 clock stabilization delay during
>> DVFS. The stabilization delay is calculated dynamically
>> using the ARM performance counter.
>> Currently 6us of SDRC stabilization value is used to get
>> the correct delay.
> That is a good thing to have! However the counters might already be in use,
> cf. below
>
Yes, we had a concern about that and not sure how soon the perf counter starts
up. We do this at very early boot code as a part of init_IRQ. much before
profile_init. So I am not sure if your concern is valid.
Thanks,
-Romit
next prev parent reply other threads:[~2009-12-11 14:07 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-11 12:05 [PATCH] OMAP3: PM: Dynamic calculation of SDRC clock stabilization delay Reddy, Teerth
2009-12-11 12:23 ` Menon, Nishanth
2009-12-11 12:31 ` Romit Dasgupta
2009-12-11 13:42 ` Nishanth Menon
2009-12-12 4:43 ` Nishanth Menon
2009-12-14 8:19 ` Romit Dasgupta
2009-12-11 13:14 ` Jean Pihet
2009-12-11 14:07 ` Romit Dasgupta [this message]
2009-12-11 16:38 ` Kevin Hilman
2009-12-12 0:49 ` Kevin Hilman
2009-12-14 9:01 ` Romit Dasgupta
2009-12-14 16:10 ` Kevin Hilman
2009-12-14 16:41 ` Dasgupta, Romit
2009-12-14 19:34 ` Kevin Hilman
2009-12-21 11:44 ` Reddy, Teerth
2009-12-22 15:56 ` Kevin Hilman
2009-12-22 16:00 ` Sripathy, Vishwanath
2009-12-22 16:56 ` Kevin Hilman
-- strict thread matches above, loose matches on Subject: below --
2009-12-24 5:33 Reddy, Teerth
2009-12-24 10:31 ` Romit Dasgupta
2009-12-28 19:57 ` Tony Lindgren
2010-01-06 23:06 ` Kevin Hilman
2010-01-21 5:35 ` Paul Walmsley
2010-01-21 8:58 ` Reddy, Teerth
2010-02-08 22:52 ` Paul Walmsley
2009-12-23 13:56 Reddy, Teerth
2009-12-23 14:32 ` Romit Dasgupta
2009-12-24 5:31 ` Reddy, Teerth
2009-12-11 12:42 Romit Dasgupta
2009-12-11 10:35 Reddy, Teerth
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