Hi,
I am trying to bring up a custom board based on iMX8mm. I am trying to enable mass storage on the custom board. I could mount the USB on EVK without any problem. But when I am using the same build on the custom board, I could not make it work.
Downloaded the stock build on EVK enabling the mass storage driver.
Mounted eMMC card partition using the driving using the following command:
modprobe g_mass_storage file=/dev/mmcblk1p1
It worked perfectly fine.
Log:
# modprobe g_mass_storage file=/dev/mmcblk2p1
[ 114.147210] Mass Storage Function, version: 2009/09/11
[ 114.152682] LUN: removable file: (no medium)
[ 114.158904] LUN: file: /dev/mmcblk2p1
[ 114.162893] Number of LUNs=1
[ 114.167751] g_mass_storage gadget: Mass Storage Gadget, version: 2009/09/11
[ 114.174796] g_mass_storage gadget: userspace failed to provide iSerialNumber
[ 114.181872] g_mass_storage gadget: g_mass_storage ready
# [ 114.626916] g_mass_storage gadget: high-speed config #1: Linux File-Backed Storage
Used the same set of steps with the same build on my custom board, Didn't work.
Log:
# modprobe g_mass_storage file=/dev/mmcblk2p1
[ 50.266199] Mass Storage Function, version: 2009/09/11
[ 50.278719] LUN: removable file: (no medium)
[ 50.287791] LUN: file: /dev/mmcblk2p1
[ 50.291987] Number of LUNs=1
[ 50.296231] g_mass_storage gadget: Mass Storage Gadget, version: 2009/09/11
[ 50.303382] g_mass_storage gadget: userspace failed to provide iSerialNumber
[ 50.310563] g_mass_storage gadget: g_mass_storage ready
I expected it to work without any change. Not sure why it is not working? I am able to download the image to eMMC using the USB interface. So I am assuming that the USB is working fine.
Any idea how to proceed with debugging this issue?
Thanks,
Avijit
