mainboard/google/poppy/variants/rammus: Modify VR setting
We refer to Intel Doc#594883. The recommended Ac/Dc loadline values are as below: # VR Settings Configuration for 4 Domains #+----------------+-------+-------+-------+-------+ #| Domain/Setting | SA | IA | GTUS | GTS | #+----------------+-------+-------+-------+-------+ #| Psi1Threshold | 20A | 20A | 20A | 20A | #| Psi2Threshold | 2A | 2A | 2A | 2A | #| Psi3Threshold | 1A | 1A | 1A | 1A | #| Psi3Enable | 1 | 1 | 1 | 1 | #| Psi4Enable | 1 | 1 | 1 | 1 | #| ImonSlope | 0 | 0 | 0 | 0 | #| ImonOffset | 0 | 0 | 0 | 0 | #| VrVoltageLimit | 1.52V | 1.52V | 1.52V | 1.52V | #| AcLoadline | 14.4 | 4.2 | 5.7 | 4.47 | #| DcLoadline | 14.0 | 4.17 | 4.2 | 4.3 | #+----------------+-------+-------+-------+-------+ BUG=b:112167318 BRANCH=master TEST=emerge-rammus coreboot chromeos-ec chromeos-bootimage Flash FW to DUT, and make sure system boots up. Change-Id: I2d83d835ec841ac4cc811a0a69f74d203d5ea173 Signed-off-by: statham_chu <statham_chu@pegatron.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/28695 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
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@ -83,8 +83,8 @@ chip soc/intel/skylake
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#| ImonSlope | 0 | 0 | 0 | 0 |
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#| ImonOffset | 0 | 0 | 0 | 0 |
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#| VrVoltageLimit | 1.52V | 1.52V | 1.52V | 1.52V |
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#| AcLoadline | 15 | 5.7 | 5.5 | 5.5 |
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#| DcLoadline | 14.3 | 4.83 | 4.2 | 4.2 |
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#| AcLoadline | 14.4 | 4.2 | 5.7 | 4.47 |
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#| DcLoadline | 14.0 | 4.17 | 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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@ -96,8 +96,8 @@ chip soc/intel/skylake
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.voltage_limit = 1520,
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.ac_loadline = 1500,
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.dc_loadline = 1430,
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.ac_loadline = 1440,
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.dc_loadline = 1400,
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}"
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register "domain_vr_config[VR_IA_CORE]" = "{
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@ -110,8 +110,8 @@ chip soc/intel/skylake
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.voltage_limit = 1520,
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.ac_loadline = 570,
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.dc_loadline = 483,
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.ac_loadline = 420,
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.dc_loadline = 417,
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}"
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register "domain_vr_config[VR_GT_UNSLICED]" = "{
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@ -124,7 +124,7 @@ chip soc/intel/skylake
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.voltage_limit = 1520,
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.ac_loadline = 550,
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.ac_loadline = 570,
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.dc_loadline = 420,
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}"
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@ -138,8 +138,8 @@ chip soc/intel/skylake
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.imon_slope = 0x0,
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.imon_offset = 0x0,
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.voltage_limit = 1520,
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.ac_loadline = 550,
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.dc_loadline = 420,
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.ac_loadline = 447,
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.dc_loadline = 430,
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}"
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# Enable Root port 1.
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