How to change hdmi video mode in runtime?

[zohanlin]

Hello all, I used imx6 dual.

I traced our board.c and  BoardConfig.mk, there are fixed value about hdmi resolution.

Is there any way to change hdmi video mode in runtime?

Thanks a lot,

zohan

[SergioSolis]

Hello Zohan,

You can change video resolution and pixel density through ADB. Can you tell me more information on how you'd like to change it?, through the Android settings or is there a reason to change it on runtime?

[zohanlin]

Hello SergioSolis,

Could you tell me how to change it through ADB?

I tried the command : echo "S:720x480p-60" > /sys/devices/platform/mxc_sdc_fb.1/graphics/fb2/mode

But it not worked.

I have two different resolution LCD display, so I think maybe I can make my HDMI output appropriate video signal  according to the resolution of screen.

Would it be possible to do that ?

[SergioSolis]

You can use the window manager on ADB. Do a shell session within adb and set it as:  wm size 720x480