The Linux kernel can use the ACPI _PLD group information to
determine peer ports. Currently to define the group information
the devicetree must provide a complete _PLD structure. This
change pulls the group information into a separate structure that
can be defined in devicetree. This makes it easier to set for
USB devices in devicetree that do not need a full custom PLD.
This was tested on a sarien board with the USB devices defined
by verifying that the USB 2/3 ports are correctly identified
with their peer in sysfs.
Change-Id: Ifd4cadf0f6c901eb3832ad4e1395904f99c2f5a0
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/c/29998
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
e1eca1d91c