root@TinaLinux:/# cd /sys/kernel/debug/dispdbg
root@TinaLinux:/sys/kernel/debug/dispdbg#
root@TinaLinux:/sys/kernel/debug/dispdbg# echo disp0 > name; echo switch1 > comm and; echo 4 10 0 0 0x4 0x101 0 0 0 8 > param; echo 1 > start;
[ 2224.532003] disp:0 type:4 mode:10 format:0 bits:0 eotf:4 cs:257 ouputmode:0 range:0 scan:0 aspect_ratio:8
[ 2225.560079] [HDMI receive params]: tv mode: 0xa format:0x0 data bits:0x0 eotf:0x4 cs:0x101 dvi_hdmi:2 range:0 scan:0 aspect_ratio:8
[ 2226.650163] disp_al_manager_apply ouput_type:0
[ 2226.655264] disp_al_hdmi_cfg
[ 2226.658589] [DISP] disp_device_attached_and_enable,line:233:
[ 2226.658594] attached ok, mgr0<-->dev0
[ 2226.669126] [DISP] disp_device_attached_and_enable,line:236:
[ 2226.669133] type:4,mode:10,fmt:rgb,bits:8bits,eotf:4,cs:257 dvi_hdmi:2, range:0 scan:0 ratio:8
root@TinaLinux:/sys/kernel/debug/dispdbg#
看到了HDMI上有显示了
root@TinaLinux:/sys/kernel/debug/dispdbg#
root@TinaLinux:/sys/kernel/debug/dispdbg# echo 1 > /sys/class/disp/disp/attr/col orbar
root@TinaLinux:/sys/kernel/debug/dispdbg#
root@TinaLinux:/sys/kernel/debug/dispdbg# [ 2295.860048] HDMI cable is connected
显示很多渐变方格
