From: Detlef Vollmann <dv@vollmann.ch>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] PXA270 support
Date: Wed, 30 Mar 2005 11:12:04 +0200 [thread overview]
Message-ID: <424A6D64.7384108F@vollmann.ch> (raw)
In-Reply-To: 4235F5BA.1040705@applieddata.net
Sorry that this reply took so long...
Robert Whaley wrote:
> Try timing the sleep command. Is it accurate? Take a look at
> cpu/pxa/interrupts.c.
>
> I believe the CFG is correct in the patch (but I haven't looked at this
> for a while).
Yes, you're correct. I tested it and checked it against the
specification.
As for the high value of CFG_HZ: yes, while testing I also
had overflow troubles. But as the relevant function is in CPU
support and not in board support, it's not possible to change
it without breaking all the boards based on this CPU.
To avoid the overflow problem, it might help to add a
mdelay() and maybe even sleep() function.
Detlef
--
Detlef Vollmann vollmann engineering gmbh
Linux and C++ for Embedded Systems http://www.vollmann.ch/
next prev parent reply other threads:[~2005-03-30 9:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-11 12:39 [U-Boot-Users] PXA270 support Detlef Vollmann
2005-03-11 16:12 ` Robert Whaley
2005-03-14 20:23 ` Detlef Vollmann
2005-03-14 20:36 ` Robert Whaley
2005-03-30 9:12 ` Detlef Vollmann [this message]
2005-03-30 9:46 ` Wolfgang Denk
2005-03-14 22:03 ` Wolfgang Denk
-- strict thread matches above, loose matches on Subject: below --
2005-03-14 22:16 Woodruff, Richard
2005-03-14 22:55 ` Wolfgang Denk
2005-03-15 0:03 ` Detlef Vollmann
2005-03-15 0:29 ` Wolfgang Denk
2005-03-14 23:44 Woodruff, Richard
2005-03-15 0:00 ` Wolfgang Denk
2005-03-17 22:14 Woodruff, Richard
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