[U-Boot-Users] MPC8280 bus_clk

[HU Chunlin]

Thank you for the quick reply.

So for at least 8266 CPU running PCI agent mode, the
CONFIG_8260_CLKIN definition must be set to 2 x PCI_CLK, and
the bus_clk must be calculated as
  gd->bus_clk = gd->vco_out / (busdf + 1)?

If so, I think there must be a patch for it.

Regards,
HU Chunlin

>From: "Rune Torgersen" <runet at innovsys.com>
>To: "HU Chunlin" <hucl606 at hotmail.com>
>Subject: RE: [U-Boot-Users] MPC8280 bus_clk
>Date: Mon, 22 Mar 2004 10:40:31 -0600
>
>That is a problem for at least eht 8266 CPU when set in PCI agent mode,
>because the clockiin is then 2x the PCI clock, and is not the bus clock
>(which is multiplied up from that)
>
> > I got some information from the Technical Support Engineering
> > Team of Motorola that the statement BUS_CLK == CLKIN applies
> > to local bus mode only.

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