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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>
This commit is contained in:
statham_chu 2018-09-20 16:02:04 +08:00 committed by Patrick Georgi
parent b269f873b0
commit 200262c87d
1 changed files with 9 additions and 9 deletions
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18
src/mainboard/google/poppy/variants/rammus/devicetree.cb
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@ -83,8 +83,8 @@ chip soc/intel/skylake
#| ImonSlope | 0 | 0 | 0 | 0 | #| ImonSlope | 0 | 0 | 0 | 0 |
#| ImonOffset | 0 | 0 | 0 | 0 | #| ImonOffset | 0 | 0 | 0 | 0 |
#| VrVoltageLimit | 1.52V | 1.52V | 1.52V | 1.52V | #| VrVoltageLimit | 1.52V | 1.52V | 1.52V | 1.52V |
#| AcLoadline | 15 | 5.7 | 5.5 | 5.5 | #| AcLoadline | 14.4 | 4.2 | 5.7 | 4.47 |
#| DcLoadline | 14.3 | 4.83 | 4.2 | 4.2 | #| DcLoadline | 14.0 | 4.17 | 4.2 | 4.3 |
#+----------------+-------+-------+-------+-------+ #+----------------+-------+-------+-------+-------+
register "domain_vr_config[VR_SYSTEM_AGENT]" = "{ register "domain_vr_config[VR_SYSTEM_AGENT]" = "{
.vr_config_enable = 1, .vr_config_enable = 1,
@ -96,8 +96,8 @@ chip soc/intel/skylake
.imon_slope = 0x0, .imon_slope = 0x0,
.imon_offset = 0x0, .imon_offset = 0x0,
.voltage_limit = 1520, .voltage_limit = 1520,
.ac_loadline = 1500, .ac_loadline = 1440,
.dc_loadline = 1430, .dc_loadline = 1400,
}" }"
register "domain_vr_config[VR_IA_CORE]" = "{ register "domain_vr_config[VR_IA_CORE]" = "{
@ -110,8 +110,8 @@ chip soc/intel/skylake
.imon_slope = 0x0, .imon_slope = 0x0,
.imon_offset = 0x0, .imon_offset = 0x0,
.voltage_limit = 1520, .voltage_limit = 1520,
.ac_loadline = 570, .ac_loadline = 420,
.dc_loadline = 483, .dc_loadline = 417,
}" }"
register "domain_vr_config[VR_GT_UNSLICED]" = "{ register "domain_vr_config[VR_GT_UNSLICED]" = "{
@ -124,7 +124,7 @@ chip soc/intel/skylake
.imon_slope = 0x0, .imon_slope = 0x0,
.imon_offset = 0x0, .imon_offset = 0x0,
.voltage_limit = 1520, .voltage_limit = 1520,
.ac_loadline = 550, .ac_loadline = 570,
.dc_loadline = 420, .dc_loadline = 420,
}" }"
@ -138,8 +138,8 @@ chip soc/intel/skylake
.imon_slope = 0x0, .imon_slope = 0x0,
.imon_offset = 0x0, .imon_offset = 0x0,
.voltage_limit = 1520, .voltage_limit = 1520,
.ac_loadline = 550, .ac_loadline = 447,
.dc_loadline = 420, .dc_loadline = 430,
}" }"
# Enable Root port 1. # Enable Root port 1.