diff options
| author | Michael Niewöhner <foss@mniewoehner.de> | 2021-09-27 18:39:41 +0200 |
|---|---|---|
| committer | Michael Niewöhner <foss@mniewoehner.de> | 2021-10-17 13:57:30 +0000 |
| commit | 01b3c40bfef5f5789a8521da766be8792eeb06c2 (patch) | |
| tree | cc2ed65d163a382945dda45b091bab0d3e68f799 /src/soc/intel/alderlake/pmc.c | |
| parent | 820b9c4676ba56da56ed04164335c5dba9d3dcbe (diff) | |
soc/intel: move disabling of PM Timer to SoC PMC code
Move disabling of PM Timer to SoC PMC code.
The original reason for placing that in `finalize` [1] was FSP hanging
due to use of the PM timer without enabling timer emulation first in
coreboot, which was added later [2].
[1] commit 6c1bf27dae (intel/skylake: disable ACPI PM Timer to enable
XTAL OSC shutdown)
[2] commit f004f66ca7 (soc/intel/skylake: Enable ACPI PM timer emulation
on all CPUs)
Change-Id: I354c3aea0c8c1f8ff3d698e0636932b7b76125f7
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58019
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/soc/intel/alderlake/pmc.c')
| -rw-r--r-- | src/soc/intel/alderlake/pmc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/pmc.c b/src/soc/intel/alderlake/pmc.c index 6f9b03b16f..4251cd66bd 100644 --- a/src/soc/intel/alderlake/pmc.c +++ b/src/soc/intel/alderlake/pmc.c @@ -152,6 +152,15 @@ static void soc_pmc_init(struct device *dev) * done from the "ops->init" callback. */ pmc_set_acpi_mode(); + + /* + * Disable ACPI PM timer based on Kconfig + * + * Disabling ACPI PM timer is necessary for XTAL OSC shutdown. + * Disabling ACPI PM timer also switches off TCO + */ + if (!CONFIG(USE_PM_ACPI_TIMER)) + pmc_disable_acpi_timer(); } static void pm1_enable_pwrbtn_smi(void *unused) |