Re: [RFC][PATCH] at91_ide driver

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Thursday 22 January 2009 13:24:18 Sergei Shtylyov napisał(a):
> Hello, I wrote:
> 
> >>>>> +            t9 = t2i - t1;
> >>>>>         
> >>>>    It  more sense to calculate such things *after* quantizing the 
> >>>> timings with calc_mck_cycles()...
> >>>>     
> >>> Why?
> >>>   
> >>
> >>   More precise result -- matching the clock being used.
> >
> >   However, I don't understand now why you need to stretch t9...
> 
>   Ah, I do again. t0 *should be equal* to t1 + t2 + t9 for the better 
> speeds.
And hold time should meet min t2i requirement, so t9 = max(t9_orig, t2i - t1).

Stanislaw Gruszka

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