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From: Kumar Gala <galak@kernel.crashing.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Matt Sealey <matt@genesi-usa.com>,
	Sergei Shtylyov <sshtylyov@ru.mvista.com>,
	linuxppc-dev@ozlabs.org, mingo@elte.hu,
	linux-kernel@vger.kernel.org,
	Robert Schwebel <r.schwebel@pengutronix.de>
Subject: Re: [PATCH 2.6.21-rt2] PowerPC: decrementer clockevent driver
Date: Fri, 18 May 2007 11:31:19 -0500	[thread overview]
Message-ID: <32E780BE-58B7-4303-AA49-1852C4C7EB50@kernel.crashing.org> (raw)
In-Reply-To: <1179499713.12981.75.camel@chaos>


On May 18, 2007, at 9:48 AM, Thomas Gleixner wrote:

> On Fri, 2007-05-18 at 15:28 +0100, Matt Sealey wrote:
>>>> I guess the real question is, how high resolution does a high  
>>>> resolution
>>>> timer need to be,
>>>
>>>    In the order of microseconds.
>>
>> I think both the MPC52xx GPT0-7 and the SLT0-1 fulfil this fairly
>> easily.
>
> There is some basic work for MPC5200 available:
>
> http://www.pengutronix.de/oselas/bsp/phytec/index_en.html#phyCORE- 
> MPC5200B-tiny

I asked this earlier, but figured you might have a better insight.   
Is their value in having 'drivers' for more than one clock source?   
I'd say most (of not all) the PPC SoCs have timers on the system side  
that we could provide drivers for, I'm just not sure if that does  
anything for anyone.

- k

  parent reply	other threads:[~2007-05-18 16:31 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-17 17:42 Sergei Shtylyov
2007-05-17 17:47 ` Kumar Gala
2007-05-17 18:07   ` Sergei Shtylyov
2007-05-17 18:17     ` Kumar Gala
2007-05-17 18:26       ` Sergei Shtylyov
2007-05-17 18:31         ` Kumar Gala
2007-05-17 18:42           ` Sergei Shtylyov
2007-05-18 12:39             ` Matt Sealey
2007-05-18 13:45               ` Sergei Shtylyov
2007-05-18 14:28                 ` Matt Sealey
2007-05-18 14:48                   ` Thomas Gleixner
2007-05-18 15:37                     ` Matt Sealey
2007-05-18 16:31                     ` Kumar Gala [this message]
2007-05-18 16:50                       ` Thomas Gleixner
2007-05-18 16:55                         ` Matt Sealey
2007-05-18 16:52                       ` Matt Sealey
2007-07-10 10:52                         ` Gabriel Paubert
2007-07-10 14:24                           ` Segher Boessenkool
2007-07-10 23:31                             ` Paul Mackerras
2007-07-11  0:10                               ` Segher Boessenkool
2007-05-18 20:27                       ` David Miller
2007-05-18 14:56       ` Daniel Walker
2007-05-18 15:06         ` Sergei Shtylyov
2007-05-18 15:39           ` Daniel Walker
2007-05-18 15:48             ` Sergei Shtylyov
2007-05-19  3:33             ` Paul Mackerras
2007-05-20  2:43               ` Daniel Walker
2007-05-20  3:03                 ` Benjamin Herrenschmidt
2007-05-20 15:03                   ` Matt Sealey
2007-05-20 21:25                     ` Benjamin Herrenschmidt
2007-05-20 16:02                   ` Segher Boessenkool
2007-05-20 21:26                     ` Benjamin Herrenschmidt
2007-05-17 19:27 ` Segher Boessenkool
2007-05-17 19:43   ` Sergei Shtylyov
2007-05-17 19:50     ` Segher Boessenkool
2007-05-17 20:00       ` Sergei Shtylyov
2007-05-17 20:53         ` Segher Boessenkool
2007-05-18  5:04           ` Benjamin Herrenschmidt
2007-05-18  5:39             ` Dave Liu
2007-05-18  7:08               ` Benjamin Herrenschmidt
2007-05-18 13:41                 ` Sergei Shtylyov
2007-05-18 13:48                   ` Sergei Shtylyov
2007-05-18 23:27                   ` Benjamin Herrenschmidt
2007-05-18 23:49                     ` Segher Boessenkool
2007-05-19  0:13                       ` Benjamin Herrenschmidt
2007-05-19  3:34                   ` Paul Mackerras
2007-05-24 18:25 ` [PATCH 2.6.21-rt7] PowerPC: fix clockevents for classic CPUs Sergei Shtylyov
2007-05-24 19:10   ` Segher Boessenkool
2007-10-18 14:45 ` [PATCH 2.6.21-rt2] PowerPC: decrementer clockevent driver Sergei Shtylyov
2007-05-18  3:24 Albert Cahalan
2007-05-18 14:52 ` Sergei Shtylyov
2007-05-19  1:45   ` Albert Cahalan
2007-05-19 12:28     ` Segher Boessenkool
2007-05-19 18:22       ` Albert Cahalan

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