Messages in this thread | | | Date | Tue, 4 Feb 2014 20:39:34 +0100 | Subject | Re: [RFC PATCH 0/5] CPU Jitter RNG | From | Geert Uytterhoeven <> |
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On Tue, Feb 4, 2014 at 8:23 PM, <tytso@mit.edu> wrote: > However, where a decade ago the ethernet card probably had its own > independent clock crystal/oscillator, I'm going to guess that these > days with SOC's and even on laptops, with ethernet device part of the > chipset, it is probably being driven off the same master oscillator.
USB typically still has its own crystal.
> I wonder if there's anyway we can either figure out manually, or > preferably, automatically at boot time, which devices actually have > independent clock oscillators.
You may find this information in the DT on some platforms (if you're lucky).
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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