diff options
| author | Sridhar Siricilla <sridhar.siricilla@intel.com> | 2020-06-17 00:38:20 +0530 |
|---|---|---|
| committer | Edward O'Callaghan <quasisec@chromium.org> | 2020-06-25 13:43:01 +0000 |
| commit | e40b9481e616f8b8a899ac9bb9fbf1cda20d7114 (patch) | |
| tree | 2affa524a52a7c4b3edf8cf9c0469f4e3139720f /src/soc/intel/cannonlake/chip.h | |
| parent | d95dba0ce34df0a0b61e70fa89470ab113e2e918 (diff) | |
soc/intel/cannonlake: Add PchPmPwrCycDur to chip options
Add PchPmPwrCycDur to chip options to control the UPD FSPS PchPmPwrCycDur
from devicetree. The UPD determines the minimum time a platform will stay
in reset during host partition reset with power cycle or global reset.
This patch also ensures configured PchPmPwrCycDur value doesn't violate
the PCH EDS specification.
TEST=Verified on Hatch and Puff boards
Signed-off-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
Change-Id: I55e836c78fab34e34d57b04428a1498b7dc7174b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42440
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Diffstat (limited to 'src/soc/intel/cannonlake/chip.h')
| -rw-r--r-- | src/soc/intel/cannonlake/chip.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/chip.h b/src/soc/intel/cannonlake/chip.h index 3ebbc5e38d..57922e131c 100644 --- a/src/soc/intel/cannonlake/chip.h +++ b/src/soc/intel/cannonlake/chip.h @@ -315,6 +315,23 @@ struct soc_intel_cannonlake_config { uint8_t PchPmSlpAMinAssert; /* + * PCH PM Reset Power Cycle Duration + * 0 = 4s + * 1 = 1s + * 2 = 2s + * 3 = 3s + * 4 = 4s (default) + * + * NOTE: Duration programmed in the PchPmPwrCycDur should never be smaller than the + * stretch duration programmed in the following registers - + * - GEN_PMCON_A.SLP_S3_MIN_ASST_WDTH (PchPmSlpS3MinAssert) + * - GEN_PMCON_A.S4MAW (PchPmSlpS4MinAssert) + * - PM_CFG.SLP_A_MIN_ASST_WDTH (PchPmSlpAMinAssert) + * - PM_CFG.SLP_LAN_MIN_ASST_WDTH + */ + uint8_t PchPmPwrCycDur; + + /* * SerialIO device mode selection: * * Device index: |