[coreboot-gerrit] [S] Change in coreboot[master]: soc/intel/meteorlake: Disable ACPI PM timer using IOE.PMC

[Subrata Banik (Code Review)]

Attention is currently required from: Kapil Porwal, Subrata Banik, Sukumar Ghorai, Tarun Tuli.

Hello Kapil Porwal, Sukumar Ghorai, Tarun Tuli, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/75822?usp=email

to look at the new patch set (#2).

The following approvals got outdated and were removed:
Code-Review+1 by Sukumar Ghorai, Verified+1 by build bot (Jenkins)

Change subject: soc/intel/meteorlake: Disable ACPI PM timer using IOE.PMC
......................................................................

soc/intel/meteorlake: Disable ACPI PM timer using IOE.PMC

This patch disables the ACPI PM timer which is necessary for XTAL OSC
shutdown. Also, disabling ACPI PM timer switches off TCO.

BUG=b:274744845
TEST=Able to boot and verify S0ix is working even with EC reset and
cold boot scenarios.

w/o this cl:
> iotools mmio_read32 0xfe4018fc

0x0

w/ this cl:
> iotools mmio_read32 0xfe4018fc

0x2

Change-Id: Ibb6e145f67dba7270e0a322ef414bf1cb09c5eda
Signed-off-by: Subrata Banik 
---
M src/soc/intel/meteorlake/include/soc/iomap.h
M src/soc/intel/meteorlake/include/soc/pm.h
M src/soc/intel/meteorlake/pmc.c
M src/soc/intel/meteorlake/pmutil.c
4 files changed, 14 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/22/75822/2