使用全志A64的核心板，发现在开发板上是，HDMI是可以的，同一块核心板放在自己主板上，HDMI就没有信号，抓取LOG日志，发现出问题时，插入HDMI打印了下面LOG: [   41.732800] psci: CPU1 killed. [   42.042373] [BT_LPM] bluesleep_tx_timer_expire: Tx timer expired [   42.049032] [BT_LPM] bluesleep_tx_timer_expire: Tx has been idle [   49.799742] CPU1: Booted secondary processor [   49.804468] CPU1: update cpu_power 1968128 [   50.208261] [DISP] disp_device_attached_and_enable,line:159:attched ok, mgr1<-->device1, type=4, mode=10 [   51.373030] CPU1: shutdown [   51.377321] psci: CPU1 killed. [   51.479035] [HDMI WRN] file:drivers/video/sunxi/disp2/hdmi/drv_hdmi.c,line:298:    unsupported video mode 11 when set display mode [   51.803767] [HDMI WRN] file:drivers/video/sunxi/disp2/hdmi/drv_hdmi.c,line:298:    unsupported video mode 14 when set display mode [   51.921730] [BT_LPM] bluesleep_tx_timer_expire: Tx timer expired [   51.928381] [BT_LPM] bluesleep_tx_timer_expire: Tx has been idle [   52.253785] [dramfreq] 336000KHz->672000KHz start [   52.273046] hwc force flip disp[1]:1 [   52.277464] disp_runtime_resume [   52.281212] hwc_resume [   52.297187] disp_runtime_resume finish [   52.347344] [dramfreq] [cpu0] elapsed:35us [   52.390589] [dramfreq] 336000KHz->672000KHz ok [   52.400383] CPU1: Booted secondary processor [   52.405098] CPU1: update cpu_power 1968128 [   53.653815] [dramfreq] 672000KHz->336000KHz start [   53.691348] [dramfreq] [cpu0] elapsed:23us [   53.699004] [dramfreq] 672000KHz->336000KHz ok [   53.930526] CPU1: shutdown [   53.935042] psci: CPU1 killed. [   58.656042] CPU1: Booted secondary processor [   58.660796] CPU1: update cpu_power 1968128 [   60.229145] CPU1: shutdown 出现红色标记的异常，而正常的开发板HDMI插入是没有这个信息，并且HDMI可以显示画面，请高手看看这是什么问题，多谢

现在一路I2C分配给触摸屏使用，/sys/class/i2c-adp/i2c-0发现触摸驱动，可为什么/dev下没有I2C设备呢？