[x] i2c hdmi
[x] i2c RTC (first disable CLKOUT - it will enable INT1 wakeup)
    by default RTC does CLKOUT and constantly wakes up the board
[x] Shutdown in enumerated state
[x] Shutdown in non-enumerated state
[x] RTC wakeup
[x] USB wakeup
[x] power button wakeup
[x] config flash
[x] sdram memory test
[x] ADC
[x] OLED
[x] SDCARD behaviour with wifi
[ ] GPIO normal mode
[ ] GPIO differential mode
[x] AUDIO jack
[ ] USB2 with soft-usb core