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imx6sxsadbresd u-boot parallel lcd

Question asked by David Luberger on Nov 13, 2018
Latest reply on Nov 27, 2018 by Diego Adrian Cuevas

I have the NXP-recommended hdmi adapter board connected to the parallel lcd connector on the imx6sxsabresd eval board.  After the OS boots up, I get the matchbox desktop displaying fine on my monitor.  However, in u-boot, after changing the "panel" environment variable to MCIMX28LCD (this is the name of the parallel LCD display entity in the mx6sxsabresd.c board file), I don't get anything on my monitor. On other boards, u-boot always shows something, such as the small NXP logo and the u-boot version.  I tried loading a bitmap into memory and displaying it, but nothing happens, though i know the bmp is loaded correctly.  I'm doing all this straight from the yocto-built sd card image.  I'm sure the issue is somewhere in the u-boot settings, but I don't know what to change.  I don't have an LVDS display to try out the default display settings, so this is my only option.

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