- UART has unusual speed: 1500000
- Make sure to add large heatsink
- Powering related troubles are possible since USB Type-C is not PD-compliant
- PCIe port is not supported: Allwinner H6 has a quirky PCIe controller that doesn’t map the PCIe address space properly to CPU, and accessing the PCIe config space, IO space or memory space will need to be wrapped. As Linux doesn’t wrap PCIe memory space access, it’s not possible to do a proper PCIe controller driver for H6. The BSP kernel modifies the driver to wrap the access, so it’s also not generic, and only devices with modified driver will work. Armbian does not support BSP based kernels. You can find more information here and here.
- UART has unusual speed: 1500000
- boot from SD card is possible by shorting TP50265 to the ground and powering the board. After Armbian boots up, you can overwrite eMMC. You need to do this procedure only once or in case you totally brick your system.
- once you have Armbian booting from eMMC, you can boot SD card in more simple manner: stop booting from UART console and execute those commands:
setenv devnum 1followed byrun mmc_boot - you need to use
EXPERT="yes"to build kernel or images.
Hold power button for about 7-8 seconds to power the device up. Boot log: http://ix.io/1r19
Known problems:
- HDMI is not working and will probably never,
- onboard wireless is too fragile, disabled by default.
- USB3 sometimes doesn’t detect high-speed devices properly
- A heat sink is highly recommended if you want to run it at full speed
- Changing screen resolution
- USB3 sometimes doesn’t detect high-speed devices properly
