Other NXP ProductsのトピックRe: imx8mp gadget mode strange behavior

imx8mp gadget mode strange behavior

jemish_1990 — Mon, 15 Dec 2025 11:47:23 GMT

Hi All,

Processor : imx8mp ( NXP_MIMX8ML8DVNLZAB )
Kernel version : 6.6.36

We are working on product based on imx8mp processor. In which I observed strange behavior with typeC gadget mode.

I insert USB pendrive in my unit which detected as /dev/sda1, when I connect typec from unit to PC and it detect this pendrive in PC and I can see content of pendrive connected in my unit in the PC. It is working without inserting g_mass_storage.ko (this driver not builtin also)
But instead of using pendrive if I use SD card (/dev/mmcblk1p1). Doesn't matter what configuration I use but it's doesn't work.

Any suggestion or pointers for this problem will be very helpful as we are at very crucial stage of development.

Thanks,

Jemish

Re: imx8mp gadget mode strange behavior

Zhiming_Liu — Tue, 16 Dec 2025 01:39:17 GMT

Hi @jemish_1990

I don't see such issue on i.MX8MP EVK + 6.6.y.

The mmcblk1p1 can be read on PC with sdcard reader before i insert it on board. Then i insert sdcard and use below command. Then same partition can be mounted in Windows.

modprobe g_mass_storage file=/dev/mmcblk1p1 removable=1

Best Regards,
Zhiming

Re: imx8mp gadget mode strange behavior

jemish_1990 — Tue, 16 Dec 2025 11:09:59 GMT

Hi @Zhiming_Liu ,

Thanks for your quick response, I understand issue, it's limitation from our board design.

So we can close this discussion.

Thanks,

Jemish