On Thu, 16 Sep 1999, Mark Huang wrote:
> Hi,
>
> Is there a way to update the SA-1100's PPCR register and change the core
> clock frequency on the fly after booting Linux? I've tried running the
> assembly code that I use to set the core clock before booting, but that
> just hangs the system usually.
Why would you do that? The problem is that most configurable timings like
dram, IO bus, etc. are all configured relative to the core clock. By
changing the clock you may lose your dram refresh rate and then anything
funny can happen.
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