[U-Boot] [RFC] Review of U-Boot timer API

Wolfgang Denk
2011-05-24T14:19:50Z

Dear Scott McNutt,

In message <4DDBB29D.2050102@psyent.com> you wrote:
>
> Why must get_timer() be used to perform "meaningful time measurement?"

Excellent question! It was never intended to be used as such.

Also, neither udelay() nor get_timer() make any warranties about
accuracy or precision. If they are a few percent off, that's perfectly
fine. Even if they are 10% off this is not a big problem anywhere.

> If all of this is about time measurement, why not start with your dream
> time measurement API, and go from there? And make it an optional
> feature.

D'acore.

> If the existing API, that has been used successfully for years,
> primarily as a mechanism for detecting a time-out, has issues,
> then let's resolve _those_ issues and avoid the "car-boat" ... the
> vehicle that floats like a car and handles like a boat. ;-)

:-)

Best regards,

Wolfgang Denk

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