How to support scc-enet on MPC8247 in Linux 2.6.32.6

[Peter Pan]

I'm porting Linux 2.6.32.6 to our MPC8247 based board. We use SCC3 and
SCC4 as ethernet port. These two ports are connect with LXT905 PHY
chip.
I'm now using fs_enet driver, how should I config the scc port in dtc
file. I copied from mgcoge.dts file, and my dtc file of scc enet is
follows:

            eth2: ethernet at 11a40 {
                device_type = "network";
                compatible = "fsl,mpc8247-scc-enet",
                             "fsl,cpm2-scc-enet";
                reg = <0x11a40 0x20 0x8200 0x100 0x11390 0x1>;
                local-mac-address = [ 00 00 00 00 00 00 ]; /* filled
by U-Boot */
                interrupts = <42 8>;
                interrupt-parent = <&PIC>;
                linux,network-index = <0x2>;
                fsl,cpm-command = <0x8c00000>;
                fixed-link = < 0 0 10 0 0 >;
            };
But i does not working. Linux says that PHY 0:00 is not found. I dive
into the code, and that's according to the fixed-link property.
I'm wondering how to support scc-enet in my situation.