USB_GMDIOGEN
brcm_usb_writel(0xffffffff, usb_mdio + USB_GMDIOGEN);
usb_mdio + USB_GMDIOGEN);
brcm_usb_writel(0x00000000, usb_mdio + USB_GMDIOGEN);
brcm_usb_writel(0xffffffff, usb_mdio + USB_GMDIOGEN);
brcm_usb_writel(0x69020000 | (addr << 18), usb_mdio + USB_GMDIOGEN);
brcm_usb_writel(0x00000000, usb_mdio + USB_GMDIOGEN);