Xavier AGX error and hangs while booting on custom board

Hi, NVidia!
Jetson Xavier AGX was flashed with JetPack 5.0.2 (with flash.sh).
But it give error and hangs at first boot with this log on uart:

[ 21.752299] tegra-i2c 31c0000.i2c: I2C transfer timed out
[ 21.864301] tegra-i2c 31c0000.i2c: I2C transfer timed out
[ 21.976324] tegra-i2c 31c0000.i2c: I2C transfer timed out
[ 22.088351] tegra-i2c 31c0000.i2c: I2C transfer timed out
[ 22.200332] tegra-i2c 31c0000.i2c: I2C transfer timed out
[ 22.201457] tegradc 15200000.display: hdmi: edid read failed
явverify_rate_range: FMON_NVDISPLAYHUB: rate 9431578 below min 18750000
fmon_update_config: FMON_NVDISPLAYHUB: detected fault 0x4000
яб[ 26.365591] nvidia: loading out-of-tree module taints kernel.
[ 28.786574] Please complete system configuration setup on desktop to proceed…
явverify_rate_range: FMON_NVDISPLAYHUB: rate 9431578 below min 18750000
fmon_update_config: FMON_NVDISPLAYHUB: detected fault 0x4000
яб[ 29.555230] mdio_bus 2490000.ethernet: MDIO device at address 0 is missing.
[ 29.557342] nvethernet 2490000.ethernet: failed to connect PHY
[ 29.559136] net eth0: ether_open: Cannot attach to PHY (error: -19)
явverify_rate_range: FMON_NVDISPLAYHUB: rate 9431578 below min 18750000
fmon_update_config: FMON_NVDISPLAYHUB: detected fault 0x4000

It’s look like problem with display/hdmi. May be there is reason to disable hdmi at all.

Thank you

Does your board have HDMI? If not, please disable it from the device tree.

Thank you, WayneWWW. Can you explain how to disable HDMI from device tree?

Do you have experience in linux kernel?

Yes. I have experience in linux kernel. The point is how to find where in device tree disable hdmi.
May be in tegra194-hdmi.dtsi file

Please disable the nvdisplay node and sor node that are not in use.

sor0~2 is mapping to the DP0~2 pins on Xavier.

nvidisplay is the software controller to control one SOR. The mapping is defined in device tree.

Thank you WayneWWW!
Disabling nvdisplay and sor nodes unlocks boot process.

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