08-08-2017, 09:07 AM
Just had a quick chat with Olliver Schinagl, who is assisting in part of the Mainline linux kernel work for the Allwinner A20, and the Olimex Lime2 board. Very closely related to the A64. As they are both using the same power management IC.
Long story short, this behaviour is part of the AXP power management IC, and is configurable. The power management IC can give an interrupt depending on various conditions. The mainline kernel most likely configures this correct while our Pine64 kernel doesn't setup this properly. Didn't investigate beyond this yet.
Long story short, this behaviour is part of the AXP power management IC, and is configurable. The power management IC can give an interrupt depending on various conditions. The mainline kernel most likely configures this correct while our Pine64 kernel doesn't setup this properly. Didn't investigate beyond this yet.
