MPC5200: Set PCI retry counter to 0 = infinite retry;

The default of 255 is too short for slow devices.
Patch by Martin Nykodym, 12 Dec 2005

CHANGELOG

@@ -2,6 +2,10 @@
 Changes for U-Boot 1.1.4:
 ======================================================================
 
+* MPC5200:  Set PCI retry counter to 0 = infinite retry;
+  The default of 255 is too short for slow devices.
+  Patch by Martin Nykodym, 12 Dec 2005
+
 * Change port configuration for O2DNT (CODEC1 on PSC1).
 
 * Fix register for PCI async mode on PPC440EP

cpu/mpc5xxx/pci_mpc5200.c

@@ -145,7 +145,11 @@ void pci_mpc5xxx_init (struct pci_controller *hose)
 
 	/* Disable interrupts from PCI controller */
 	*(vu_long *)MPC5XXX_PCI_GSCR &= ~(7 << 12);
-	*(vu_long *)MPC5XXX_PCI_ICR &= ~(7 << 24);
+	*(vu_long *)MPC5XXX_PCI_ICR  &= ~(7 << 24);
+
+	/* Set PCI retry counter to 0 = infinite retry. */
+	/* The default of 255 is too short for slow devices. */
+	*(vu_long *)MPC5XXX_PCI_ICR &= 0xFFFFFF00;
 
 	/* Disable initiator windows */
 	*(vu_long *)MPC5XXX_PCI_IWCR = 0;