Getting control of the lcd pins on P8

I’m working on a project that needs quite a few gpio’s and we initially chose to use the lcd pins on P8 because we are running headless.

Currently, we are running: Linux beaglebone 4.1.17-bone-rt-r18 #1 Mon Feb 1 07:40:21 UTC 2016 armv7l GNU/Linux (because we used “–bone-rt-kernel --lts-4_1”).

When I try toggling the first few pins in the nxp_hdmi_bonelt_pins (on Derek Molloy’s spreadsheet), they don’t respond. In particular, P8_27 - P8_30 don’t change.

We originally built a custom dtb using dtb-rebuilder, but that seems to have been removed. So, we cloned and don’t know where to go from there.

Sorry, false alarm. Somebody :frowning: had the wrong base dtb enabled. Once we had “dtb=am335x-boneblack-emmc-overlay.dtb” enabled, it worked. I apologize for the noise.