Can not mount iMX8QM emmc "Couldn't init USB controller"

Technical Support
, , , ,
1

Hello,

i am trying to mount the emmc of an imx8qm device with a new yocto build. However with the new build (and u-boot) it is not possible on my windows nor my linux machine to mount the emmc.
I get the following error

Apalis iMX8 # ums 0 mmc 0
UMS: LUN 0, dev 0, hwpart 0, sector 0x0, count 0x1da4000
We are in is_imx8
Getting phy ctrl
We are in is_imx8
Getting phy ctrl
No USB device found
Couldn't init USB controller.

The whole boot sequence is:

U-Boot 2020.04-5.1.0-devel+git.0a26a04408ca (Dec 28 2020 - 14:02:46 +0000)

CPU:   NXP i.MX8QM RevB A53 at 1200 MHz

DRAM:  4 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Model: Toradex Apalis iMX8 QuadMax 4GB Wi-Fi / BT IT V1.1B, Serial# 06738462

 BuildInfo: 
  - SCFW 732e719a, SECO-FW 376e3c15, IMX-MKIMAGE 6745ccdc, ATF 
  - U-Boot 2020.04-5.1.0-devel+git.0a26a04408ca 

switch to partitions #0, OK
mmc0(part 0) is current device
flash target is MMC:0
Net:   eth0: ethernet@5b040000
Fastboot: Normal
Normal Boot
Hit any key to stop autoboot:  0 
Apalis iMX8 # ums 0 mmc 0
UMS: LUN 0, dev 0, hwpart 0, sector 0x0, count 0x1da4000
We are in is_imx8
Getting phy ctrl
We are in is_imx8
Getting phy ctrl
No USB device found
Couldn't init USB controller.

any ideas?

Thank you for your help!

1 Like
2

Please do a usb start first.

3

Thank You,

I tried that but the result is still the same;

U-Boot 2020.04-5.1.0-devel+git.0a26a04408ca (Dec 28 2020 - 14:02:46 +0000)

CPU:   NXP i.MX8QM RevB A53 at 1200 MHz

DRAM:  4 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Model: Toradex Apalis iMX8 QuadMax 4GB Wi-Fi / BT IT V1.1B, Serial# 06738462

 BuildInfo: 
  - SCFW 732e719a, SECO-FW 376e3c15, IMX-MKIMAGE 6745ccdc, ATF 
  - U-Boot 2020.04-5.1.0-devel+git.0a26a04408ca 

switch to partitions #0, OK
mmc0(part 0) is current device
flash target is MMC:0
Net:   eth0: ethernet@5b040000
Fastboot: Normal
Normal Boot
Hit any key to stop autoboot:  0 
Apalis iMX8 # 
Apalis iMX8 # 
Apalis iMX8 # usb start
starting USB...
Bus usb@5b0d0000: usb dr_mode not found
USB EHCI 1.00
Bus usbh3: XHCI-imx8 init hccr 0x000000005b130000 and hcor 0x000000005b130080 hc_length 128
Register 2000820 NbrPorts 2
Starting the controller
USB XHCI 1.00
scanning bus usb@5b0d0000 for devices... 1 USB Device(s) found
scanning bus usbh3 for devices... 1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found
Apalis iMX8 # ums 0 mmc 0
UMS: LUN 0, dev 0, hwpart 0, sector 0x0, count 0x1da4000
We are in is_imx8
Getting phy ctrl
We are in is_imx8
Getting phy ctrl
No USB device found
Couldn't init USB controller.
Apalis iMX8 #
4

Hi
Did you remove the jumper JP2 on Ixora? I tested this and it is working fine.

Best regards,
Jaski

5

Hello,
no JP2 and JP3 are still in place.

Best regards

6

Thank you! That solved this problem!
Best regards

7

Perfect. You are welcome.

8

Could you remove JP2 and try this again?
Thanks and best regards,
Jaski