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DRM FrameBuffer for iMX6ULL

Question asked by Anthony Groyer on Jan 23, 2019
Latest reply on Jan 31, 2019 by Anthony Groyer



Right now, iMX6ULL has support for basic framebuffer with CONFIG_FB_MXS in kernel with driver "drivers/video/fbdev/mxsfb.c" and the compatible driver string "fsl,imx28-lcdif".


Is there any DRM Framebuffer support for iMX6ULL ?


The final goal is to use Qt with DRM Framebuffer platform plugin.


I have tester CONFIG_DRM_MXSFB and driver "drivers/gpu/drm/mxsfb/mxsfb_drv.c" with also the compatible driver string "fsl,imx28-lcdif". But I have errors in the kernel log:

mxsfb_drm 21c8000.lcdif: Failed to initialize drm fb helper.
mxsfb_drm 21c8000.lcdif: Failed to init FB CMA area

and also the kernel crashes afterwards.