On Thu, 6 Sep 2007 13:43:08 -0500 Scott Wood <[EMAIL PROTECTED]> wrote:
> On Thu, Sep 06, 2007 at 02:24:30PM -0400, Leisner, Martin wrote: > > What exactly do we mean by "timebase"? > > > > There a symbol in arch/powerpc/time.c:ppc_proc_freq which looks like the > > processor frequency (derived from the dts). But its not exported. > > > > There's also ppc_tb_freq. > > The timebase is the rate at which the timebase and decrementer registers > tick. It is not the same as the CPU core frequency. Unless your timebase and decrementer clock source is tied to the CPU clock. :) So it depends on the board, and it can even depend on how the board is initialized. Some boards can change the timebase clock source on the fly. josh _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
