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IMX6DL LINUX4.9 How to add fb2?

Question asked by SEN DONG on Mar 2, 2018
Latest reply on Mar 16, 2018 by Joan Xie

I have a imx6dl board,and I use yocto project 2.2 to bitbake fsl-image-qt5,linux 4.9.0 and qt5.8,

but when I boot the board,and setenv mmcargs 'setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} video=mxcfb0:dev=ldb,if=RGB24 ldb=sin0 video=mxcfb2:dev=hdmi,1280x800M@60,if=RGB24'.

In /dev/,there are only fb0 and fb1,I want to use fb2 to display hdmi.

Here is the error:

mxc_sdc_fb fb@0: registered mxc display driver ldb
imx-ipuv3 2400000.ipu: IPU DMFC DP HIGH RESOLUTION: 1(0,1), 5B(2~5), 5F(6,7)
Console: switching to colour frame buffer device 160x50
mxc_hdmi 20e0000.hdmi_video: Detected HDMI controller 0x13:0x1a:0xa0:0xc1
fbcvt: 1280x800@60: CVT Name - 1.024MA
mxc_sdc_fb fb@2: registered mxc display driver hdmi
mxc_sdc_fb fb@2: ipu0-di0 already in use
mxc_sdc_fb: probe of fb@2 failed with error -16



Please help me ,thank you !!!