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authorDuncan Laurie <dlaurie@chromium.org>2017-03-14 16:42:33 -0700
committerDuncan Laurie <dlaurie@chromium.org>2017-03-15 19:48:57 +0100
commit57e9e3be5fe3a68c8ccedc85e673f091aaf8ff58 (patch)
tree12f56b1512a7037e755f36b6e504eb962fe40062
parent86db46987176b6e78852d62042046e4af458e71a (diff)
downloadcoreboot-57e9e3be5fe3a68c8ccedc85e673f091aaf8ff58.tar.xz
google/eve: Apply default AC/DC loadline settings
Set the AC and DC loadline values based on the KBL-Y 2+2 defaults that are applied by FSP. These will be tuned later and are exposed as defaults so the engineers know what to start with. BUG=b:36228330 BRANCH=none TEST=Build and boot on Eve and check debug FSP output to ensure that it is applying the provided loadline values Change-Id: Ieae4f2b201d8210e75bdb9438070a3a2e1fda6b7 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/18820 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins)
-rw-r--r--src/mainboard/google/eve/devicetree.cb10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mainboard/google/eve/devicetree.cb b/src/mainboard/google/eve/devicetree.cb
index 22b49d7116..76ef17c610 100644
--- a/src/mainboard/google/eve/devicetree.cb
+++ b/src/mainboard/google/eve/devicetree.cb
@@ -74,6 +74,8 @@ chip soc/intel/skylake
#| ImonOffset | 0 | 0 | 0 | 0 |
#| IccMax | 4A | 24A | 24A | 24A |
#| VrVoltageLimit | 1.52V | 1.52V | 1.52V | 1.52V |
+ #| AcLoadline | 17.9 | 5.9 | 5.7 | 5.7 |
+ #| DcLoadline | 14 | 4.7 | 4.2 | 4.2 |
#+----------------+-------+-------+-------+-------+
register "domain_vr_config[VR_SYSTEM_AGENT]" = "{
.vr_config_enable = 1,
@@ -86,6 +88,8 @@ chip soc/intel/skylake
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(4),
.voltage_limit = 1520,
+ .ac_loadline = 1790,
+ .dc_loadline = 1400,
}"
register "domain_vr_config[VR_IA_CORE]" = "{
@@ -99,6 +103,8 @@ chip soc/intel/skylake
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(24),
.voltage_limit = 1520,
+ .ac_loadline = 590,
+ .dc_loadline = 470,
}"
register "domain_vr_config[VR_GT_UNSLICED]" = "{
@@ -112,6 +118,8 @@ chip soc/intel/skylake
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(24),
.voltage_limit = 1520,
+ .ac_loadline = 570,
+ .dc_loadline = 420,
}"
register "domain_vr_config[VR_GT_SLICED]" = "{
@@ -125,6 +133,8 @@ chip soc/intel/skylake
.imon_offset = 0x0,
.icc_max = VR_CFG_AMP(24),
.voltage_limit = 1520,
+ .ac_loadline = 570,
+ .dc_loadline = 420,
}"
# Enable Root port 1 with SRCCLKREQ1#