diff --git a/arch/ppc/platforms/4xx/ocotea.c b/arch/ppc/platforms/4xx/ocotea.c
index 84e999d9a7bb..c8017c9f1326 100644
--- a/arch/ppc/platforms/4xx/ocotea.c
+++ b/arch/ppc/platforms/4xx/ocotea.c
@@ -178,7 +178,7 @@ ocotea_setup_pcix(void)
 	/* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
 	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
 	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
-	PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
+	PCIX_WRITEL(0x80000007, PCIX0_PIM0SA);
 
 	eieio();
 }
diff --git a/arch/ppc/platforms/4xx/taishan.c b/arch/ppc/platforms/4xx/taishan.c
index bb0253eef45a..5d9af8ddb155 100644
--- a/arch/ppc/platforms/4xx/taishan.c
+++ b/arch/ppc/platforms/4xx/taishan.c
@@ -235,7 +235,7 @@ taishan_setup_pcix(void)
 	/* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
 	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
 	PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
-	PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
+	PCIX_WRITEL(0x80000007, PCIX0_PIM0SA);
 	PCIX_WRITEL(0xffffffff, PCIX0_PIM0SAH);
 
 	iounmap(pcix_reg_base);