Hi:
I am using a dm6467 and fpga connected with pci. fpga acts as a pci
arbitor and provides 33MHZ clock for pci. when the dm6467 boots and begins
to scan pci slot, it prints that:
PCI: Starting PCI scan...
PCI: CFG/IO not ready.Might need tuning CFG_PCI_READY_WAITCNT value
PCI: CFG/IO not ready.Might need tuning CFG_PCI_READY_WAITCNT value
PCI: CFG/IO not ready.Might need tuning CFG_PCI_READY_WAITCNT value
PCI: CFG/IO not ready.Might need tuning CFG_PCI_READY_WAITCNT value
......
here is my question:
1) for hardware. the PCI_CLK pin of dm6467 is connected with a pin of
fpga whose pin provides a 33MHZ clock for pci.
the PCI_REQ pin of dm6467 is connected with a pin of fpga.
the PCI_GNT ping of dm6467 is connected with a ping of fpga
is there anything spacial on hardware for the pci to work properly?
2) for software, I have selected CONFIG_PCI in the configuration of
kernel. the version of kernel is Linux kernel version 2.6.32-rc1, here is
link
http://arago-project.org/files/releases/davinci-psp_3.x.0.0-r37/sources/linux-davinci-staging.tar.gz.
I use the same kernel image for dm6467-evm which is plugged in a pci
slot of pc. it can scan the pci properly.
is there anything spacial on software for the pci to work properly?
thanks verymuch!
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