Atsushi Nemoto wrote:
>
> On Wed, 20 Dec 2006 17:29:25 +0300, Sergei Shtylyov
> <sshtylyov@xxxxxxxxxxxxx> wrote:
>> > How about this? You should still fix pnx8550_hpt_read() anyway, but I
>> > suppose gettimeofday() on PNX8550 was broken long time.
>>
>> And nobody noticed. :-)
>
> I changed my mind a bit. The pre-clocksource gettimeofday() might
> work well on PNX8550. There was timerlo variable which hold COUNT
> value on last timer interrupt and fixed_gettimeoffset() subtracted
> timerlo from COUNT value at the time.
>
> On Wed, 20 Dec 2006 17:29:25 +0300, Sergei Shtylyov
> <sshtylyov@xxxxxxxxxxxxx> wrote:
>
>> > +static cycle_t pnx8550_hpt_read(void)
>> > +{
>> > + /* FIXME: we should use timer2 or timer3 as freerun counter */
>> > + return read_c0_count();
>> > +}
>>
>> I'd suggest read_c0_count2() here, possibly adding an interrupt
>> handler for it since it will interrupt upon hitting compare2
>> reg. value (but we could probably just mask the IRQ off), and
>> enabling the timer 2, of course (the current code disables it)...
>
> It would be right direction. And we should set set count2 frequency
> to mips_hpt_frequency. But I cannot test it by myself so I'd like to
> leave it for others. Good exercise ;)
>
> ---
> Atsushi Nemoto
>
>
>
It seems likely that this did work in previous releases, however it will
obviously need to work on this release and so once I have solved the startup
issues by using your second proposed patch I will do some testing to see if
I can get this to work (if it is indeed broken)
Cheers
Dan
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