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Frame Buffer sharing between HDMI and LCD

Question asked by Subodh Kant on Nov 9, 2014
Latest reply on Nov 19, 2014 by Subodh Kant

Hi all,

I am working on a project which is based on IMX6Q board.I have integrated LCD and HDMI module to it and enabled hot pluggable support in kernel .

My LCD is connected on parallel port and HDMI is based on I2C. I am using frame buffer mxcfb1 for HDMI and for LCD is mxcfb2. Individually working fine

both LCD and HDMI.But when i give the mxcfb2 frame buffer in U-BOOT arguments but it does not seem working.

$ editenv mmcargs

Added This line

video=mxcfb2:dev=lcd,480x272@60,if=RGB24 video=mxcfb2:dev=hdmi,1920x1080M@60,if=RGB24

$ saveenv


It does not come on any display (LCD and HDMI).

If i try with their individual frame buffer in that case only LCD work not an HDMI.

video=mxcfb2:dev=lcd,480x272@60,if=RGB24 video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24

Please help me to debug this issue soon.