--- a/arch/powerpc/platforms/4xx/pci.c
+++ b/arch/powerpc/platforms/4xx/pci.c
@@ -1900,9 +1900,9 @@ static void __init ppc4xx_configure_pcie
 		 * if it works
 		 */
 		out_le32(mbase + PECFG_PIM0LAL, 0x00000000);
-		out_le32(mbase + PECFG_PIM0LAH, 0x00000000);
+		out_le32(mbase + PECFG_PIM0LAH, 0x00000008);
 		out_le32(mbase + PECFG_PIM1LAL, 0x00000000);
-		out_le32(mbase + PECFG_PIM1LAH, 0x00000000);
+		out_le32(mbase + PECFG_PIM1LAH, 0x0000000c);
 		out_le32(mbase + PECFG_PIM01SAH, 0xffff0000);
 		out_le32(mbase + PECFG_PIM01SAL, 0x00000000);
 
