RE: [U-Boot-Users] Problems with MPC8247, HRCW, PCI_MODCK and PLL multiplication factors
From: Ron Kellam In short, my current problem is that the PCI_MODCK bit in the SCCR register does not reflect the PCI_MODCK bit in the Hard Reset Configuration Word. Thus I can't get the clocks I want.
Sounds like the PCI is enabled in hardware, because then the MODCK_H bits in the HRCW are ignored and the MODCK_H pins on the CPU are used instead.
On Mon, 10 Oct 2005 10:55:52 -0500, "Rune Torgersen" runet@innovsys.com wrote:
From: Ron Kellam In short, my current problem is that the PCI_MODCK bit in the SCCR register does not reflect the PCI_MODCK bit in the Hard Reset Configuration Word. Thus I can't get the clocks I want.
Sounds like the PCI is enabled in hardware, because then the MODCK_H bits in the HRCW are ignored and the MODCK_H pins on the CPU are used instead.
The MPC8272 family does not have MODCK_H pins, or a PCI_MODCK pin - these bits only exist as part of the HRCW. AFAIK, the 8272 was a derivative of the 8260 and 8280 families, and these were some of the changes.
Any other ideas?
participants (2)
-
Ron Kellam -
Rune Torgersen