IOT-GATE-iMX7 and SBC-IOT-iMX7: U-Boot: Known Issues

Copy paste limitations

When DVI console is enabled, copy/paste via serial console is limited to ~32 characters. Workaround 1: Only copy paste up to 32 characters at a time. Workaround 2: Disable DVI console, while working via serial console. Disable the DVI console before the long copy/paste: CL-SOM-iMX7 # setenv stdout serial Enable the DVI console after the long copy/paste: CL-SOM-iMX7 # setenv stdout serial,vga

USB

Part of the USB ports are not supported by the current U-Boot version. Workaround : The USB OTG ports, routed to ports P10 and P13, are supported by U-Boot. Workaround : USB ports P10 and P13 are supported by the current U-Boot version. USB 1.1 devices might not work with the current U-Boot version. Workaround : Use external USB 2.0 hub to connect USB 1.1 devices (e.g. keyboard).

I2C

The baseboard I2C bus might not function after upgrading from U-Boot version 1.0 or below to version 1.1 or above. Workaround 1: Set default U-Boot environment: CL-SOM-iMX7 # env default -a CL-SOM-iMX7 # saveenv CL-SOM-iMX7 # reset Workaround 2: Update the relevant U-Boot environment variable: CL-SOM-iMX7 # setenv baseboard_i2c_enable true CL-SOM-iMX7 # saveenv CL-SOM-iMX7 # reset