[ 4.016823] rtc-pcf8563 0-0051: low voltage detected, date/time is not reliable.
[ 4.038809] dwmac-sun8i 1c30000.ethernet eth0: device MAC address ce:61:db:3b:bc:44
[ 4.050021] Generic PHY stmmac-0:01: attached PHY driver [Generic PHY] (mii_bus:phy_addr=stmmac-0:01, irq=-1)
[ 4.063362] dwmac-sun8i 1c30000.ethernet eth0: No MAC Management Counters available
[ 4.071209] dwmac-sun8i 1c30000.ethernet eth0: PTP not supported by HW
[ 5.314400] jffs2: notice: (94) jffs2_get_inode_nodes: Wrong magic bitmask 0x0000 in node header at 0x10000c.
[ 7.212177] dwmac-sun8i 1c30000.ethernet eth0: Link is Up - 100Mbps/Full - flow control off
[ 9.508975] usb 2-1: new low-speed USB device number 2 using ohci-platform
[ 9.948970] usb 2-1: device not accepting address 2, error -62
[ 10.148999] usb 2-1: new low-speed USB device number 3 using ohci-platform
[ 10.588951] usb 2-1: device not accepting address 3, error -62
[ 10.594977] usb usb2-port1: unable to enumerate USB device开机就这样， 再怎么插U盘， 鼠标键盘都没有反应， 这是为什么呢？
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