soc/amd/common/lpc/lpc_util: use PM register mapping in ACPIMMIO region

In all SoC lpc_early_init gets called either after a call to
enable_acpimmio_decode_pm04() or the ACPIMMIO mapping is already enabled
after reset on the SoC. This allows to use pm_read8 and pm_write8 that
use the ACPIMMIO mapping of the PM registers to set the PM_LPC_ENABLE
bit in the PM_LPC_GATING register instead of pm_io_read8 and
pm_io_write8 which won't work on Phoenix and Glinda due to the IO ports
used on older generations to access to the PM registers not being
implemented any more.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I8b31ec4e03a06796502c89e3c2cfaac2d41b0ed9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76461
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions