@mntmn what are you using for dsi->eDP? The rest of the stack (mxsfb, nwl, mixel) should be in a reasonable shape with linux-next and the latest patches on the dri list.
@agx good timing :) i'm currently hacking on it. i'm using TI SN65DSI86, which has a mainline driver and seems pretty simple. i also picked some of your patches like https://source.puri.sm/Librem5/linux-next/commit/1a92d1145ec8ee9c7fe0376ed154594e429edd94
@mntmn the version you picked is rather old and might not support bridge chaining.