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Disable MPC5200 bus pipelining as workaround for bus contention

This commit is contained in:
wdenk 2003-09-16 17:20:34 +00:00
parent 4aeb251f90
commit 373e6bec13
1 changed files with 2 additions and 0 deletions
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2
cpu/mpc5xxx/pci_mpc5200.c
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@ -129,8 +129,10 @@ void pci_mpc5xxx_init (struct pci_controller *hose)
*(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~((7 << 8) | (3 << 5)); *(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~((7 << 8) | (3 << 5));
*(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (3 << 8) | (3 << 5); *(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (3 << 8) | (3 << 5);
#if 0
/* Enable piplining */ /* Enable piplining */
*(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~(1 << 31); *(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~(1 << 31);
#endif
/* Disable interrupts from PCI controller */ /* Disable interrupts from PCI controller */
*(vu_long *)MPC5XXX_PCI_GSCR &= ~(7 << 12); *(vu_long *)MPC5XXX_PCI_GSCR &= ~(7 << 12);