commit 56d66ae854168f65c9cb6181d89f264778f5e76a
author Gaggery Tsai <gaggery.tsai@intel.com> Thu Apr 18 08:54:38 2019 -0700
committer Patrick Georgi <pgeorgi@google.com> Fri Apr 26 09:20:37 2019 +0000
tree af98e73ae878006e829fdbef6b483b549adcd4cc
parent a11553dabdfbc4641e3fa73a3c4d0cb8eade2ea1

mb/google/poppy/variants/atlas: Revise AC/DC loadline

This patch revises the AC/DC loadline settings because some major
layout changes between proto and evt boards.

BUG=b:130740639
BRANCH=None
TEST=emerge-atlas coreboot chromeos-bootimage and boot to the OS.

Change-Id: Iea12c621e7fab427a0de8f43f0290bf01d0c5a09
Signed-off-by: Gaggery Tsai <gaggery.tsai@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32359
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: caveh jalali <caveh@chromium.org>
Reviewed-by: Caveh Jalali <caveh@google.com>

src/mainboard/google/poppy/variants/atlas/devicetree.cb

diff --git a/src/mainboard/google/poppy/variants/atlas/devicetree.cb b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
index 53af87d..ad79bca 100644
--- a/src/mainboard/google/poppy/variants/atlas/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
@@ -88,8 +88,8 @@
 	#| ImonOffset     | 0     | 0     | 0     | 0     |
 	#| IccMax         | set by SoC code per CPU SKU   |
 	#| VrVoltageLimit | 1.52V | 1.52V | 1.52V | 1.52V |
-	#| AcLoadline     | 14.75 | 4.42  | 4.7   | 4.7   |
-	#| DcLoadline     | 14.2  | 4.2   | 4.41  | 4.41  |
+	#| AcLoadline     | 16.20 | 5.24  | 4.62  | 4.62  |
+	#| DcLoadline     | 14.2  | 4.94  | 4.25  | 4.25  |
 	#+----------------+-------+-------+-------+-------+
 	register "domain_vr_config[VR_SYSTEM_AGENT]" = "{
 		.vr_config_enable = 1,
@@ -101,7 +101,7 @@
 		.imon_slope = 0x0,
 		.imon_offset = 0x0,
 		.voltage_limit = 1520,
-		.ac_loadline = 1475,
+		.ac_loadline = 1620,
 		.dc_loadline = 1420,
 	}"
 
@@ -115,8 +115,8 @@
 		.imon_slope = 0x0,
 		.imon_offset = 0x0,
 		.voltage_limit = 1520,
-		.ac_loadline = 442,
-		.dc_loadline = 420,
+		.ac_loadline = 524,
+		.dc_loadline = 494,
 	}"
 
 	register "domain_vr_config[VR_GT_UNSLICED]" = "{
@@ -129,8 +129,8 @@
 		.imon_slope = 0x0,
 		.imon_offset = 0x0,
 		.voltage_limit = 1520,
-		.ac_loadline = 470,
-		.dc_loadline = 441,
+		.ac_loadline = 462,
+		.dc_loadline = 425,
 	}"
 
 	register "domain_vr_config[VR_GT_SLICED]" = "{
@@ -143,8 +143,8 @@
 		.imon_slope = 0x0,
 		.imon_offset = 0x0,
 		.voltage_limit = 1520,
-		.ac_loadline = 470,
-		.dc_loadline = 441,
+		.ac_loadline = 462,
+		.dc_loadline = 425,
 	}"
 
 	# PCIe Root port 1 with SRCCLKREQ1# (WLAN)