diff options
Diffstat (limited to 'src/soc/intel/cannonlake/pmc.c')
| -rw-r--r-- | src/soc/intel/cannonlake/pmc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/pmc.c b/src/soc/intel/cannonlake/pmc.c index d502e0675a..4c88685d04 100644 --- a/src/soc/intel/cannonlake/pmc.c +++ b/src/soc/intel/cannonlake/pmc.c @@ -118,6 +118,15 @@ static void soc_pmc_init(struct device *dev) * found. */ 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)) + setbits8(pmc_mmio_regs() + PCH_PWRM_ACPI_TMR_CTL, ACPI_TIM_DIS); } static void pmc_fill_ssdt(const struct device *dev) |