diff options
Diffstat (limited to 'src/soc/intel/apollolake/acpi.c')
| -rw-r--r-- | src/soc/intel/apollolake/acpi.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/acpi.c b/src/soc/intel/apollolake/acpi.c index 1449a36619..5e42091965 100644 --- a/src/soc/intel/apollolake/acpi.c +++ b/src/soc/intel/apollolake/acpi.c @@ -153,6 +153,9 @@ int soc_madt_sci_irq_polarity(int sci) void soc_fill_fadt(acpi_fadt_t *fadt) { + const struct soc_intel_apollolake_config *cfg; + struct device *dev = SA_DEV_ROOT; + fadt->pm_tmr_blk = ACPI_BASE_ADDRESS + PM1_TMR; fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED; @@ -166,6 +169,15 @@ void soc_fill_fadt(acpi_fadt_t *fadt) fadt->x_pm_tmr_blk.space_id = 1; fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8; fadt->x_pm_tmr_blk.addrl = ACPI_BASE_ADDRESS + PM1_TMR; + + if (!dev || !dev->chip_info) { + printk(BIOS_ERR, "BUG! Could not find SOC devicetree config\n"); + return; + } + cfg = dev->chip_info; + + if(cfg->lpss_s0ix_enable) + fadt->flags |= ACPI_FADT_LOW_PWR_IDLE_S0; } void soc_power_states_generation(int core_id, int cores_per_package) |