
Comment 1 by Nikolaus Schaller, Jul 28, 2019
Problem #3 has been solved. Was just a problem of packing the linux-image-letux.deb which was missing the /boot/bootargs.scr file.

Comment 2 by Nikolaus Schaller, Jul 30, 2019
Problem #1 also solved. Backlight-PWM om am335x is not the omap_dmtimer but ti-ehrpwm. We did not enable these drivers in the letux_defconfig.
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Reported by Nikolaus Schaller, Jul 28, 2019