3 files changed, 17 insertions, 5 deletions

diff --git a/arch/arm/mach-iop32x/Kconfig b/arch/arm/mach-iop32x/Kconfig
index 9dd49cff21ff..9bb02b6d7ae1 100644
--- a/arch/arm/mach-iop32x/Kconfig
+++ b/arch/arm/mach-iop32x/Kconfig
@@ -34,6 +34,14 @@ config MACH_N2100
           Say Y here if you want to run your kernel on the Thecus n2100
           NAS appliance.
 
+config IOP3XX_ATU
+        bool "Enable the PCI Controller"
+        default y
+        help
+          Say Y here if you want the IOP to initialize its PCI Controller.
+          Say N if the IOP is an add in card, the host system owns the PCI
+          bus in this case.
+
 endmenu
 
 endif
diff --git a/arch/arm/mach-iop32x/iq31244.c b/arch/arm/mach-iop32x/iq31244.c
index 60e74309a458..7b21c6e13e59 100644
--- a/arch/arm/mach-iop32x/iq31244.c
+++ b/arch/arm/mach-iop32x/iq31244.c
@@ -178,9 +178,10 @@ static struct hw_pci iq31244_pci __initdata = {
 
 static int __init iq31244_pci_init(void)
 {
-        if (is_ep80219())
-                pci_common_init(&ep80219_pci);
-        else if (machine_is_iq31244()) {
+        if (is_ep80219()) {
+                if (iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE)
+                        pci_common_init(&ep80219_pci);
+        } else if (machine_is_iq31244()) {
                 if (is_80219()) {
                         printk("note: iq31244 board type has been selected\n");
                         printk("note: to select ep80219 operation:\n");
@@ -189,7 +190,9 @@ static int __init iq31244_pci_init(void)
                         printk("\t2/ update boot loader to pass"
                                 " the ep80219 id: %d\n", MACH_TYPE_EP80219);
                 }
-                pci_common_init(&iq31244_pci);
+
+                if (iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE)
+                        pci_common_init(&iq31244_pci);
         }
 
         return 0;
diff --git a/arch/arm/mach-iop32x/iq80321.c b/arch/arm/mach-iop32x/iq80321.c
index 361c70c0f64c..bc25fb91e7b9 100644
--- a/arch/arm/mach-iop32x/iq80321.c
+++ b/arch/arm/mach-iop32x/iq80321.c
@@ -113,7 +113,8 @@ static struct hw_pci iq80321_pci __initdata = {
 
 static int __init iq80321_pci_init(void)
 {
-        if (machine_is_iq80321())
+        if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
+                machine_is_iq80321())
                 pci_common_init(&iq80321_pci);
 
         return 0;