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mfgtool : Waiting for /dev/utp to appear

Question asked by Florian GERMAIN on Feb 19, 2019
Latest reply on Jun 30, 2020 by Anush Deekonda

I have a problem with my board imx6sxsabresd and BSP imx-yocto-L4.14.78_1.0.0_ga.


When i use ramfs provided in mfgtool package (L4.9.88_2.0.0_mfg-tool) i can program my sabresd board.

I compile mfgtool firmwares and it seems that my ramfs is not well builded.

Changing fsl-image-mfgtool-initramfs-imx_mfgtools.cpio.gz.u-boot by the files builded with Yocto, mfgtool stuck at this line : 


Freeing unused kernel memory: 1024K
Found New UDC: ci_hdrc.0
ci_hdrc.0 0
file system registered
Mass Storage Function, version: 2009/09/11
LUN: removable file: (no medium)
run utp at /dev/usb-utp0/ep0
uuu fastboot client 1.0.0 [built read descriptors
Feb 1 2019 12:47:25]
Start initread strings
write string
Start handle command
uuc /dev/utp
uuc 0.5 [built Feb 1 2019 12:47:25]
UTP: Waiting for /dev/utp to appear
configfs-gadget gadget: high-speed config #1: c


Can anyone help me ?

Today i can program my sabresd board with prebuild ramfs but with my futur custom boards, it will not be possible.