* [U-Boot-Users] PPC440 interval timer off by factor of 10?
@ 2005-01-04 17:31 Andrew Wozniak
2005-01-04 18:07 ` Wolfgang Denk
0 siblings, 1 reply; 3+ messages in thread
From: Andrew Wozniak @ 2005-01-04 17:31 UTC (permalink / raw)
To: u-boot
Hello,
I'm porting the OCOTEA u-boot package to a customer PPC440 board. In
the process of debugging (non-CFI) Flash timeout functions, it appears
that get_timer() is returning a value which increments every 10msec
instead of 1 msec:
Further code examinations shows that interrupt_init_cpu() is indeed
setting up a 10msec interval.
#if defined(CONFIG_440)
val = mfspr( tcr );
...
val = gd->bd->bi_intfreq/100; /* 10 msec */
...
Is this a real BUG? I can fix the flash related function which use the
timer but what about all the other modules which use get_timer() - some
are network related.
Thank you.
^ permalink raw reply [flat|nested] 3+ messages in thread* [U-Boot-Users] PPC440 interval timer off by factor of 10?
2005-01-04 17:31 [U-Boot-Users] PPC440 interval timer off by factor of 10? Andrew Wozniak
@ 2005-01-04 18:07 ` Wolfgang Denk
2005-01-04 20:11 ` Andrew Wozniak
0 siblings, 1 reply; 3+ messages in thread
From: Wolfgang Denk @ 2005-01-04 18:07 UTC (permalink / raw)
To: u-boot
In message <41DAD30E.1010404@mc.com> you wrote:
>
> I'm porting the OCOTEA u-boot package to a customer PPC440 board. In
> the process of debugging (non-CFI) Flash timeout functions, it appears
> that get_timer() is returning a value which increments every 10msec
> instead of 1 msec:
...
> Is this a real BUG? I can fix the flash related function which use the
Looks like a bug to me.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Make it right before you make it faster.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [U-Boot-Users] PPC440 interval timer off by factor of 10?
2005-01-04 18:07 ` Wolfgang Denk
@ 2005-01-04 20:11 ` Andrew Wozniak
0 siblings, 0 replies; 3+ messages in thread
From: Andrew Wozniak @ 2005-01-04 20:11 UTC (permalink / raw)
To: u-boot
Ok, I will investigate if the fix has any bad side affects.
If no problems show up, I'll post a patch.
-Andy
Wolfgang Denk wrote:
> In message <41DAD30E.1010404@mc.com> you wrote:
>
>>I'm porting the OCOTEA u-boot package to a customer PPC440 board. In
>>the process of debugging (non-CFI) Flash timeout functions, it appears
>>that get_timer() is returning a value which increments every 10msec
>>instead of 1 msec:
>
> ...
>
>>Is this a real BUG? I can fix the flash related function which use the
>
>
> Looks like a bug to me.
>
>
> Best regards,
>
> Wolfgang Denk
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2005-01-04 17:31 [U-Boot-Users] PPC440 interval timer off by factor of 10? Andrew Wozniak
2005-01-04 18:07 ` Wolfgang Denk
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