Initialize USB in Kernel rather then in U-BOOT for Tegra-k1 processor

Hi,

We are using Tegra-k1 processor for development.

In that U-boot takes time to initialize 3 USB (as per CONFIG_USB_MAX_CONTROLLER_COUNT = 3), which are not required at U-BOOT level.

So when we disable that initialization in U-BOOT , then USB not detected in kernel as well.

What changes we have to make to initialize USB at kernel level.

Regards,
Rahul Shah