my bsp version is L4.1.15-2.1.0-Ga and disto configuration is fsl-imx-fb.
I am trying to display a picture to my LCD panel and find that when I memcpy picture pixel data to framebuffer0 it take nearly 4s to display it on screen while it will take less than 1.5s on framebuffer1.Then I look up some guides and find out that framebuffer0 is background plane but framebuffer1 is foreground plane,framebuffer use IDMAC's channel 23 but framebuffer1 user channel 27.I don't know if these difference influence the delay or not.
So I come here to ask for help:
why it take so much time to display pixel date to lcd after I put picture data on fb0? Can it be faster?How to?
any advice is welcome