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authorstatham_chu <statham_chu@pegatron.corp-partner.google.com>2018-09-20 16:02:04 +0800
committerPatrick Georgi <pgeorgi@google.com>2018-09-28 09:53:19 +0000
commit200262c87d1b32a47c7f7c67f92e77454c9cf262 (patch)
treeb5d44affa7cca1a09c228491ed00ebad5d075cf9 /src
parentb269f873b0a0d43911adc907a53bbebadc742b78 (diff)
downloadcoreboot-200262c87d1b32a47c7f7c67f92e77454c9cf262.tar.xz
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>
Diffstat (limited to 'src')
-rw-r--r--src/mainboard/google/poppy/variants/rammus/devicetree.cb18
1 files changed, 9 insertions, 9 deletions
diff --git a/src/mainboard/google/poppy/variants/rammus/devicetree.cb b/src/mainboard/google/poppy/variants/rammus/devicetree.cb
index 7b851ac811..b750cb8efd 100644
--- a/src/mainboard/google/poppy/variants/rammus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/rammus/devicetree.cb
@@ -83,8 +83,8 @@ chip soc/intel/skylake
#| ImonSlope | 0 | 0 | 0 | 0 |
#| ImonOffset | 0 | 0 | 0 | 0 |
#| VrVoltageLimit | 1.52V | 1.52V | 1.52V | 1.52V |
- #| AcLoadline | 15 | 5.7 | 5.5 | 5.5 |
- #| DcLoadline | 14.3 | 4.83 | 4.2 | 4.2 |
+ #| AcLoadline | 14.4 | 4.2 | 5.7 | 4.47 |
+ #| DcLoadline | 14.0 | 4.17 | 4.2 | 4.3 |
#+----------------+-------+-------+-------+-------+
register "domain_vr_config[VR_SYSTEM_AGENT]" = "{
.vr_config_enable = 1,
@@ -96,8 +96,8 @@ chip soc/intel/skylake
.imon_slope = 0x0,
.imon_offset = 0x0,
.voltage_limit = 1520,
- .ac_loadline = 1500,
- .dc_loadline = 1430,
+ .ac_loadline = 1440,
+ .dc_loadline = 1400,
}"
register "domain_vr_config[VR_IA_CORE]" = "{
@@ -110,8 +110,8 @@ chip soc/intel/skylake
.imon_slope = 0x0,
.imon_offset = 0x0,
.voltage_limit = 1520,
- .ac_loadline = 570,
- .dc_loadline = 483,
+ .ac_loadline = 420,
+ .dc_loadline = 417,
}"
register "domain_vr_config[VR_GT_UNSLICED]" = "{
@@ -124,7 +124,7 @@ chip soc/intel/skylake
.imon_slope = 0x0,
.imon_offset = 0x0,
.voltage_limit = 1520,
- .ac_loadline = 550,
+ .ac_loadline = 570,
.dc_loadline = 420,
}"
@@ -138,8 +138,8 @@ chip soc/intel/skylake
.imon_slope = 0x0,
.imon_offset = 0x0,
.voltage_limit = 1520,
- .ac_loadline = 550,
- .dc_loadline = 420,
+ .ac_loadline = 447,
+ .dc_loadline = 430,
}"
# Enable Root port 1.