usb_max_current_enable同自动开机无关,RP嘅设计系插电自动开机,RP5之前系无power button,而RP5的power button只系驳咗落GPIO。
By default, USB boot is not enabled with a 3A power supply or some third-party USB-PD capable power supply. If you are using a power supply that cannot provide 5A at +5V or not compatible, the current draw to USB peripherals will be restricted to 600mA and it might affect USB booting or cannot provide enough power to your hard drives and SSDs . |