can i modify pinmux on uboot?

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

hi

I use l4t r28.1
i want to read gpio input on uboot.
but it is not work.

output control is good.(use uboot gpio command)

There seems to be a problem with pinmux.

I would like to know that how to pinmux on uboot.

help me

2

i modify below file

Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-pinmux-quill-p3310-1000-c03.cfg

i can controlled gpio input