diff options
| author | John Zhao <john.zhao@intel.com> | 2018-11-05 14:45:02 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2018-11-08 11:32:19 +0000 |
| commit | 1e6a889752b4d9c511522ccd1ae585b91e8bdf23 (patch) | |
| tree | 49ccff1bd4ce7d89f74fda91af915d0b75f77aad /src/mainboard/google/octopus/variants | |
| parent | e673e5c09eebad3efbe19d15d064d131771abc2c (diff) | |
mb/google/octopus/variants/baseboard: Improve cold boot and S3 resume
FSP 2.0.7.1 provides UPD interface to execute IPC command. Configure
PmicPmcIpcCtrl for PMC to program PMIC PCH_PWROK delay from default
100ms to 10ms to improve cold boot and S3 resume performance.
BUG=b:118676361
CQ-DEPEND=CL:*703187
TEST=Verified system_resume_firmware_ec time reduction.
Change-Id: I41b8268c752573d828e31a1d94d3f175aa3cc145
Signed-off-by: John Zhao <john.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/29485
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/octopus/variants')
| -rw-r--r-- | src/mainboard/google/octopus/variants/baseboard/devicetree.cb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/mainboard/google/octopus/variants/baseboard/devicetree.cb b/src/mainboard/google/octopus/variants/baseboard/devicetree.cb index 3d22525d4c..1119882c3f 100644 --- a/src/mainboard/google/octopus/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/octopus/variants/baseboard/devicetree.cb @@ -177,4 +177,22 @@ chip soc/intel/apollolake end # - ESPI device pci 1f.1 on end # - SMBUS end + + # FSP provides UPD interface to execute IPC command. PMIC has + # I2C_Slave_Address (31:24): 0x5E, Register_Offset (23:16): 0x43, + # RegOrValue (15:8): 0x2 and RegAndValue (7:0) 0xF8. + # The register is defined as: D[7:3] RSVD, D[2:0] PWROKDELAY. + # uint8 RegOrValue, RegAndValue, PmicReadReg + # RegOrValue = (UINT8)((PmicPmcIpcCtrl >> 8) & 0Xff); + # RegAndValue = (UINT8)(PmicPmcIpcCtrl & 0Xff); + # PmicReadReg &= RegAndValue; + # PmicReadReg |= RegOrValue; + # PmicReadReg value will be programmed into PMIC D[2:0] PWROKDELAY field + # and D[7:3] RSVD will not be impacted. + + # Configure PmicPmcIpcCtrl for PMC to program PMIC PCH_PWROK delay + # from 100ms to 10ms. + # PWROKDELAY[2:0]: 000=2.5ms, 001=5.0ms, 010=10ms, 011=15ms, 100=20ms, + # 101=50ms, 110=75ms, 111=100ms (default) + register "PmicPmcIpcCtrl" = "0x5e4302f8" end |