From owner-freebsd-arm@FreeBSD.ORG  Wed Jun 13 03:36:28 2007
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Date: Wed, 13 Jun 2007 05:36:23 +0200 (CEST)
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Cc: 
Subject: main clock frequency
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Hello,

in at91_pmc_attach you're assume a certain main clock frequency. Isn't it
reasonable to read this value from the main clock frequency register if it
is available?

I mean something like

uint32_t mcfr = RD4(pmc_softc, CKGR_MCFR);
if (mcfr & CKGR_MCFR_MAINRDY)
  at91_pmc_init_clock(pmc_softc, (mcfr & CKGR_MCFR_MAINF_MASK) * 32768 / 16);
else
  /* fallback or error */


Björn