uboot try to “boot over usb0!” instead of continue on SD card

[hzhu]

Hi, trying to evaluation, so I designed a breakout board for OSD32MP1-BRK, on breakout board, I got a USB hub chip and KSZ9031 for ethernet.

I loaded SD card with default image and everything works if OSD32M1-BRK working as a standalone unit, but once I soldered it on my breakout board, uboot hang, the message say it’s “boot over usb0!”, any suggestions? not sure why uboot not continue with SD card, the uboot message is like following:

U-Boot 2020.01-stm32mp-r1 (Sep 23 2020 – 17:21:12 -0500)

CPU: STM32MP157C?? Rev.Z
Model: Octavo OSD32MP1 BRK board
Board: stm32mp1 in trusted mode (st,stm32mp157c-osd32mp1-brk)
DRAM: 512 MiB
Clocks:
– MPU : 650 MHz
– MCU : 208.878 MHz
– AXI : 266.500 MHz
– PER : 24 MHz
– DDR : 533 MHz
STM32Programmer key pressed, entering download mode…
WDT: Started with servicing (32s timeout)
NAND: 0 MiB
MMC: STM32 SD/MMC: 0
Loading Environment from MMC… OK
In: serial
Out: serial
Err: serial
*** Warning – serial number mismatch, using default environment

invalid MAC address in OTP 00:00:00:00:00:00
Net: No ethernet found.
Hit any key to stop autoboot: 0
Boot over usb0!
Invalid or missing layout file.DFU alt info setting: done

Attachments:

1. 

   uboot_log_hang.jpg
   

[Neeraj Dantu]

hzhu,

Please check the status of header pin PC02 when you connect to the the daughter board. You might be booting into DFU mode. If you want to avoid this issue, you can modify/remove the following line from BRK device tree: https://github.com/octavosystems/OSD32MP1-BRK-device-tree/blob/master/u-boot-v2020.01/stm32mp157c-osd32mp1-brk-u-boot.dtsi#L29.

Best,

Neeraj

 

BestNLPD9

[hzhu]

Thanks.

[Author]

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