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| author | Michael Niewöhner <foss@mniewoehner.de> | 2021-09-25 00:10:30 +0200 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2021-10-16 09:11:23 +0000 |
| commit | c47fc4002261e241890c098335eaaf4cb51c844a (patch) | |
| tree | 6351190fc6c33c63e596ac0e29b164bd44b82048 /src/soc/intel/denverton_ns | |
| parent | 5c259642c2d59c551fb0e54a14d9eeeb878d1177 (diff) | |
soc/intel/pmc: add a note about legacy OSes/payloads to PM Timer Kconfig
Since ACPI 5.0A it is allowed to disable the ACPI Timer, when the
according FADT flag `ACPI_FADT_PLATFORM_CLOCK` is unset.
Starting with Skylake, most platforms (except Xeon-SP) support PM Timer
emulation, so even legacy OSes and payloads should work fine with the
hardware PM Timer disabled. However, when the `TMR_STS` functionality
is required, some legacy OSes might still not work (properly).
Add a note about this to the Kconfig help.
Change-Id: I53f1814113902124779ed85da030374439570688
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58018
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Lance Zhao
Diffstat (limited to 'src/soc/intel/denverton_ns')
0 files changed, 0 insertions, 0 deletions