How to auto power on without power key¶

1.When system starting up, R1022 and R1021 form a bias voltage to turn on Q1003.
2.After 2.5 seconds, the software controls HDMI_LEVEL_EN(GPIO) from Low to High to turn on Q1002 and turn off Q1003.
3.The production line can disable auto-power on circuit by short-circuiting TP1003 and TP1004.