This adds RTD3 RPMX mutex to the root port. It is shared between RTD3
and WWAN. The purpose of using this mutex is to prevent OSPM from
calling _ON and _OFF methods while WWAN kernel driver is calling _RST,
which accesses the GPIO pins.
BUG=NA
TEST=boot to OS and check the generated SSDT table for the root port.
The RPMX mutex should be generated under the root port.
Signed-off-by: Cliff Huang <cliff.huang@intel.com>
Change-Id: I5b53765453bac0fc96e9651ab347069c7c8bf058
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73384
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Bora Guvendik <bora.guvendik@intel.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
43c730f986