i am using an imx8m
after building an os using buildroot based on imx8mqevk_defconfig
my board reboot after starting kernel at this log
[ 1.163760] usb_phy_generic usbphynop1: supply vcc not found, using dummy regulator
[ 1.176803] usb_phy_generic usbphynop2: supply vcc not found, using dummy regulator
[ 1.186056] i2c i2c-0: IMX I2C adapter registered