1 files changed, 39 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 1add6efdb315..5d89a21dd0d6 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2216,6 +2216,45 @@ static void __init fixup_device_tree_efika(void)
                         prom_printf("fixup_device_tree_efika: ",
                                 "skipped entry %x - setprop error\n", i);
         }
+
+        /* Make sure ethernet mdio bus node exists */
+        node = call_prom("finddevice", 1, 1, ADDR("/builtin/mdio"));
+        if (!PHANDLE_VALID(node)) {
+                prom_printf("Adding Ethernet MDIO node\n");
+                call_prom("interpret", 1, 1,
+                        " s\" /builtin\" find-device"
+                        " new-device"
+                                " 1 encode-int s\" #address-cells\" property"
+                                " 0 encode-int s\" #size-cells\" property"
+                                " s\" mdio\" 2dup device-name device-type"
+                                " s\" mpc5200b-fec-phy\" encode-string"
+                                " s\" compatible\" property"
+                                " 0xf0003000 0x400 reg"
+                                " 0x2 encode-int"
+                                " 0x5 encode-int encode+"
+                                " 0x3 encode-int encode+"
+                                " s\" interrupts\" property"
+                        " finish-device");
+        };
+
+        /* Make sure ethernet phy device node exist */
+        node = call_prom("finddevice", 1, 1, ADDR("/builtin/mdio/ethernet-phy"));
+        if (!PHANDLE_VALID(node)) {
+                prom_printf("Adding Ethernet PHY node\n");
+                call_prom("interpret", 1, 1,
+                        " s\" /builtin/mdio\" find-device"
+                        " new-device"
+                                " s\" ethernet-phy\" device-name"
+                                " 0x10 encode-int s\" reg\" property"
+                                " my-self"
+                                " ihandle>phandle"
+                        " finish-device"
+                        " s\" /builtin/ethernet\" find-device"
+                                " encode-int"
+                                " s\" phy-handle\" property"
+                        " device-end");
+        }
+
 }
 #else
 #define fixup_device_tree_efika()