Disable MPC5200 bus pipelining as workaround for bus contention

21 years ago · 373e6bec13
parent 4aeb251f90
commit 373e6bec13
1 changed files with 2 additions and 0 deletions
--- a/cpu/mpc5xxx/pci_mpc5200.c
+++ b/cpu/mpc5xxx/pci_mpc5200.c
@ -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) |= (3 << 8) | (3 << 5);

+#if 0
 	/* Enable piplining */
 	*(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~(1 << 31);
+#endif
 	
 	/* Disable interrupts from PCI controller */
 	*(vu_long *)MPC5XXX_PCI_GSCR &= ~(7 << 12);