how to modify uboot to reduce the time of uboot starts

Hello,
The time between uboot start and kenel start is 12 seconds,
how to reduce it?
Thankyou very much!

Hi 2284810331,

Please start with checking https://devtalk.nvidia.com/default/topic/1026416/jetson-tx1/can-tx1-boot-without-u-boot-just-want-to-save-the-u-boot-boot-time-/ to see if anything can be leveraged in your case.