diff options
Diffstat (limited to 'src/soc/intel/skylake/pmutil.c')
-rw-r--r-- | src/soc/intel/skylake/pmutil.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/pmutil.c b/src/soc/intel/skylake/pmutil.c index fe26ebfe37..ded44dc85c 100644 --- a/src/soc/intel/skylake/pmutil.c +++ b/src/soc/intel/skylake/pmutil.c @@ -265,3 +265,18 @@ void pmc_soc_set_afterg3_en(const bool on) reg8 |= SLEEP_AFTER_POWER_FAIL; pci_write_config8(dev, GEN_PMCON_B, reg8); } + +void pmc_clear_pmcon_sts(void) +{ + uint32_t reg_val; + const pci_devfn_t dev = PCH_DEV_PMC; + + reg_val = pci_read_config32(dev, GEN_PMCON_A); + /* + * Clear SUS_PWR_FLR, GBL_RST_STS, HOST_RST_STS, PWR_FLR bits + * while retaining MS4V write-1-to-clear bit + */ + reg_val &= ~(MS4V); + + pci_write_config32(dev, GEN_PMCON_A, reg_val); +} |