Re: [U-Boot-Users] PQ2FADS-ZU PQ28280 access to 60x bus SDRAM failed when localbus is in PCI mode?

On Wed, 2005-06-15 at 17:42 +0800, KokHow Teh wrote:

        I am having trouble with my PQ2FADS-ZU board with a PQ2 8280

processor that when the localbus is put into PCI mode with LBPC = 01, all accesses to 60x bus SDRAM fails. Uboot failed in get_ram_size() routine. The selection of localbus operation mode is done by SW9. Switch the jumper back to localbus SDRAM mode, U-boot boots to the prompt and access to 60x SDRAM is fine. Does anybody have similar experience? Any insight is appreciated.

For the Mailling List Archives:

If you're using the 'default' 100Mhz bus crystal on your PQ2FADS, and all other jumpers are factory defaults, the MODCKH[0-3]_MODCK[1-3] settings on SW6 are:

JP9 -> Local: 0101_111

JP9 -> PCI: 1010_010 (66Mhz PCI bus)

Where '1' is the "Off" switch position, and '0' is the 'On' position.