[U-Boot] Enabling smc911x driver

I'm attempting to enable the smc911x driver for the overo omap3 board.

Looking at the README and a couple of board config files, it seems that defining CONFIG_DRIVER_SMC911X, CONFIG_DRIVER_SMC911X_16_BIT (or 32_BIT), and CONFIG_DRIVER_SMC911X_BASE is all that is required. I have also enabled CONFIG_CMD_NET, CONFIG_CMD_DHCP and CONFIG_CMD_PING.

The build completes successfully, but it seems that the driver init is never called, so I assume I am missing something.

Do I need to add an explicit init call to my board or cpu file? At first glance I don't see that other boards are doing this.

Thanks!

Steve