nocturne: configure VR per Intel recommendation
These values are Intel recommended. IccMax = 28A DC and AC LL = 4mOhms Pl2 = 18w BUG=b:79666828 BRANCH=none TEST=Enabled p-states with patch Change-Id:I82d1516998cc26b789faa5d4e897feb06dc06020 and then "emerge-nocturne depthcharge coreboot chromeos-bootimage", flash spi image onto nocturne, boot to kernel and verify device stays alive and responsive for several minutes without locking up. Change-Id: I4c67c6a095aecc158e529a6b393baf03ec358a3d Signed-off-by: Pratik Prajapati <pratikkumar.v.prajapati@intel.com> Reviewed-on: https://review.coreboot.org/27175 Reviewed-by: Lijian Zhao <lijian.zhao@intel.com> Reviewed-by: Nick Vaccaro <nvaccaro@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@ -62,7 +62,7 @@ chip soc/intel/skylake
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# Set speed_shift_enable to 1 to enable P-States, and 0 to disable
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register "speed_shift_enable" = "1"
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register "dptf_enable" = "1"
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register "tdp_pl2_override" = "15"
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register "tdp_pl2_override" = "18"
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register "psys_pmax" = "45"
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register "tcc_offset" = "10"
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register "pch_trip_temp" = "75"
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@ -87,10 +87,10 @@ chip soc/intel/skylake
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#| Psi4Enable | 1 | 1 | 1 | 1 |
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#| ImonSlope | 0 | 0 | 0 | 0 |
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#| ImonOffset | 0 | 0 | 0 | 0 |
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#| IccMax | 4A | 24A | 24A | 24A |
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#| IccMax | 4A | 28A | 24A | 24A |
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#| VrVoltageLimit | 1.52V | 1.52V | 1.52V | 1.52V |
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#| AcLoadline | 14.9 | 5 | 5.7 | 4.57 |
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#| DcLoadline | 14.2 | 4.86 | 4.2 | 4.3 |
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#| AcLoadline | 14.9 | 4 | 5.7 | 4.57 |
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#| DcLoadline | 14.2 | 4 | 4.2 | 4.3 |
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#+----------------+-------+-------+-------+-------+
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register "domain_vr_config[VR_SYSTEM_AGENT]" = "{
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.vr_config_enable = 1,
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@ -116,10 +116,10 @@ chip soc/intel/skylake
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.psi4enable = 1,
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.icc_max = VR_CFG_AMP(24),
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.icc_max = VR_CFG_AMP(28),
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.voltage_limit = 1520,
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.ac_loadline = 500,
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.dc_loadline = 486,
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.ac_loadline = 400,
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.dc_loadline = 400,
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}"
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register "domain_vr_config[VR_GT_UNSLICED]" = "{
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