[POWERPC] 4xx: Add RGMII support for Sequoia 440EPx

This adds RGMII support to Sequoia DTS and sets correct phy-mode
for EMACs. According to Sequoia datasheet, both ethernet ports
are connected to RGMII interface, while ZMII is used only for MDIO.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

arch/powerpc/boot/dts/sequoia.dts

@@ -241,6 +241,12 @@
 				reg = <ef600d00 c>;
 			};
 
+			RGMII0: emac-rgmii@ef601000 {
+				device_type = "rgmii-interface";
+				compatible = "ibm,rgmii-440epx", "ibm,rgmii";
+				reg = <ef601000 8>;
+			};
+
 			EMAC0: ethernet@ef600e00 {
 				linux,network-index = <0>;
 				device_type = "network";
@@ -261,10 +267,12 @@
 				max-frame-size = <5dc>;
 				rx-fifo-size = <1000>;
 				tx-fifo-size = <800>;
-				phy-mode = "rmii";
+				phy-mode = "rgmii";
 				phy-map = <00000000>;
 				zmii-device = <&ZMII0>;
 				zmii-channel = <0>;
+				rgmii-device = <&RGMII0>;
+				rgmii-channel = <0>;
 			};
 
 			EMAC1: ethernet@ef600f00 {
@@ -287,10 +295,12 @@
 				max-frame-size = <5dc>;
 				rx-fifo-size = <1000>;
 				tx-fifo-size = <800>;
-				phy-mode = "rmii";
+				phy-mode = "rgmii";
 				phy-map = <00000000>;
 				zmii-device = <&ZMII0>;
 				zmii-channel = <1>;
+				rgmii-device = <&RGMII0>;
+				rgmii-channel = <1>;
 			};
 		};
 	};

arch/powerpc/platforms/44x/Kconfig

@@ -50,6 +50,7 @@ config 440EPX
 	select PPC_FPU
 # Disabled until the new EMAC Driver is merged.
 #	select IBM_NEW_EMAC_EMAC4
+#	select IBM_NEW_EMAC_RGMII
 #	select IBM_NEW_EMAC_ZMII
 
 config 440GP