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Dual display in clone mode on i.MX6 Solo SabreSD based board

Question asked by vikash patil on Oct 13, 2014

Hi All,

 

I would like to achieve dual display with clone mode using LCD (CLAA-WVGA, RGB666) and HDMI on iMX6Solo sabresd based custom board which uses the X11.

 

I have following doubts regarding dual display in clone mode

- Is dual display in clone mode supported using vivante xorg driver? or Is there another way to do this?

- Is this require some xorg.conf changes, can any one please share the same?

- Do I need to have same display configuration for both the display to achieve this (same resolution , same display timing etc..)

- Is there any modification require in kernel or userspace to achieve this?

 

Just to give some more information regarding my set-up:

 

I am using ipu and disp id 0 for both hdmi and lcd as follows and I observed errors from fb driver as following

 

ipu_id = <0>;

disp_id = <0>;

 

mxc_sdc_fb fb.31: ipu0-di0 already in use

mxc_sdc_fb: probe of fb.31 failed with error -16)

 

then I tried changing the disp_id to 1 as follows from 0 for hdmi and now kernel boots without errors from mxc_sdc_fb

 

I have HDMI at 1920x1080 or 1280x720 and LCD at 800x480 on di0.

 

I am using followings:

Kernel: https://github.com/wandboard-org/linux/tree/wandboard_imx_3.10.17_1.0.0_ga

Vivante GFX drivers: https://github.com/Freescale/meta-fsl-arm/tree/daisy/recipes-graphics

fsl-gpu-sdk: https://github.com/Freescale/meta-fsl-demos/tree/master/recipes-graphics/fsl-gpu-sdk

 

Any comments, suggestions, ideas?

 

Thanks & Regards,,

Vikash

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