Switch from the 5.8.x kernel with allwinner specific patches to megi's
5.9 based tree. He drives the PinePhone related kernel development
forward like no other, his tree and changes are well documented on
xnux.eu, and he frequently publishes tested "build this one" commits with
the latest improvements. It makes a faster and less time consuming
workflow to simply package these versions (after a smoke test) into
postmarketOS edge, and after some time to catch possible regressions
ship the same version in postmarketOS stable.
This kernel should make HDMI work for most people, and improve call
quality (thanks to smaeul's patches, which are integrated into megi's
tree).
Kernel config changes:
* Enable MODEM_POWER in the kernel config, among other improvements this
allows us to get rid of the 30s delay on power off.
* Enable CONFIG_DRM_PANEL_ILITEK_ILI9881C (new PineTab panel)
* Enable CONFIG_ZRAM
* Enable CONFIG_HID_MULTITOUCH
Related: https://xnux.eu/devices/feature/modem-pp.html#toc-modem-power-driver
Changelog: https://megous.com/git/linux/tag/?h=orange-pi-5.9-20201019-1553
Co-Authored-By: Martijn Braam <martijn@brixit.nl>
Co-Authored-By: Clayton Craft <clayton@craftyguy.net>
