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-rw-r--r--src/soc/intel/skylake/acpi.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/acpi.c b/src/soc/intel/skylake/acpi.c
index be1200b681..cc8f43725b 100644
--- a/src/soc/intel/skylake/acpi.c
+++ b/src/soc/intel/skylake/acpi.c
@@ -234,6 +234,8 @@ unsigned long acpi_fill_madt(unsigned long current)
void acpi_fill_fadt(acpi_fadt_t *fadt)
{
+ const struct device *dev = SA_DEV_ROOT;
+ const config_t *config = dev ? dev->chip_info : NULL;
const uint16_t pmbase = ACPI_BASE_ADDRESS;
/* Use ACPI 3.0 revision */
@@ -282,6 +284,9 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
ACPI_FADT_RESET_REGISTER | ACPI_FADT_SEALED_CASE |
ACPI_FADT_S4_RTC_WAKE | ACPI_FADT_PLATFORM_CLOCK;
+ if (config && config->s0ix_enable)
+ fadt->flags |= ACPI_FADT_LOW_PWR_IDLE_S0;
+
fadt->reset_reg.space_id = 1;
fadt->reset_reg.bit_width = 8;
fadt->reset_reg.bit_offset = 0;