TQMa335x(L) - YOCTO Linux BSP documentation

Known Issues

Known Issues BSPs

Known Issues TQ.ARM.BSP.6.0.0.0 (Wrynose)

  • TQMa335x[L] on MBa335x: sometimes after booting the ethernet phy shows up wrong addresses or can not be found. This needs a hardware fix on MBa335x. Please contact TQ-Systems support
  • TQMa335x[L] on MBa335x: U-Boot: only the first port of the CPSW is working. This is a driver limitation in the used U-Boot version, under Linux both ports are working.
  • TQMa335xL: warnings for non exisiting chips when booting Linux. Disable RTC / EEPROM / temperature sensor in DT.
  • The generated UBIFS does not fit into the default SPI-NOR (16 MiB). If rootfs on SPI NOR is required, following solutions:
    • tailor image recipe and kernel configuration to get real tiny
    • use SoM variant with larger SPI-NOR
  • Role switching does not work on the USB-OTG port (X9); only peripheral mode is usable.
  • No Device Trees for LVDS displays are provided.
  • U-Boot:
    • USB mass storage support may vary among different USB flash drive models/vendors
    • usb reset (or usb start / usb stop) fails every second time Workaround: Repeat command
  • Suspend/Resume is currently not supported

Known Issues scarthgap.TQ.ARM.BSP.0011

  • TQMa335x[L] on MBa335x: sometimes after booting the ethernet phy shows up wrong addresses or can not be found. This needs a hardware fix on MBa335x. Please contact TQ-Systems support
  • TQMa335x[L] on MBa335x: U-Boot: only the first port of the CPSW is working. This is a driver limitation in the used U-Boot version, under Linux both ports are working.
  • TQMa335xL: warnings for non exisiting chips when booting Linux. Disable RTC / EEPROM / temperature sensor in DT.
  • The generated UBIFS does not fit into the default SPI-NOR (16 MiB). If rootfs on SPI NOR is required, following solutions:
    • tailor image recipe and kernel configuration to get real tiny
    • use SoM variant with larger SPI-NOR
  • Role switching does not work on the USB-OTG port (X9); only peripheral mode is usable.
  • No Device Trees for LVDS displays are provided.
  • U-Boot:
    • USB mass storage support may vary among different USB flash drive models/vendors
    • usb reset (or usb start / usb stop) fails every second time Workaround: Repeat command
  • Suspend/Resume is currently not supported