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-rw-r--r--src/mainboard/lenovo/l520/devicetree.cb9
-rw-r--r--src/mainboard/lenovo/t420/devicetree.cb9
-rw-r--r--src/mainboard/lenovo/t420s/devicetree.cb9
-rw-r--r--src/mainboard/lenovo/t520/devicetree.cb8
4 files changed, 32 insertions, 3 deletions
diff --git a/src/mainboard/lenovo/l520/devicetree.cb b/src/mainboard/lenovo/l520/devicetree.cb
index ead7e0bb87..a4fbe11ee8 100644
--- a/src/mainboard/lenovo/l520/devicetree.cb
+++ b/src/mainboard/lenovo/l520/devicetree.cb
@@ -12,7 +12,14 @@ chip northbridge/intel/sandybridge
register "gpu_panel_power_up_delay" = "0"
register "gpu_pch_backlight" = "0x00000000"
register "spd_addresses" = "{0x50, 0, 0x52, 0}"
-
+ chip cpu/intel/model_206ax
+ # Values obtained from vendor BIOS
+ register "pp0_psi[VR12_PSI2]" = "{VR12_ALL_PHASES, 5}"
+ register "pp0_psi[VR12_PSI3]" = "{VR12_ALL_PHASES, 1}"
+ register "pp1_psi[VR12_PSI2]" = "{VR12_ALL_PHASES, 5}"
+ register "pp1_psi[VR12_PSI3]" = "{VR12_ALL_PHASES, 1}"
+ device cpu_cluster 0 on end
+ end
device domain 0 on
subsystemid 0x17aa 0x21dd inherit
diff --git a/src/mainboard/lenovo/t420/devicetree.cb b/src/mainboard/lenovo/t420/devicetree.cb
index d4b31afe88..d469da6b79 100644
--- a/src/mainboard/lenovo/t420/devicetree.cb
+++ b/src/mainboard/lenovo/t420/devicetree.cb
@@ -16,7 +16,14 @@ chip northbridge/intel/sandybridge
register "gpu_pch_backlight" = "0x06100610"
register "spd_addresses" = "{0x50, 0, 0x51, 0}"
-
+ chip cpu/intel/model_206ax
+ # Values obtained from vendor BIOS
+ register "pp0_psi[VR12_PSI2]" = "{VR12_ALL_PHASES, 5}"
+ register "pp0_psi[VR12_PSI3]" = "{VR12_ALL_PHASES, 1}"
+ register "pp1_psi[VR12_PSI2]" = "{VR12_ALL_PHASES, 5}"
+ register "pp1_psi[VR12_PSI3]" = "{VR12_ALL_PHASES, 1}"
+ device cpu_cluster 0 on end
+ end
device domain 0 on
subsystemid 0x17aa 0x21ce inherit
diff --git a/src/mainboard/lenovo/t420s/devicetree.cb b/src/mainboard/lenovo/t420s/devicetree.cb
index fb309170fe..4ce90772a5 100644
--- a/src/mainboard/lenovo/t420s/devicetree.cb
+++ b/src/mainboard/lenovo/t420s/devicetree.cb
@@ -16,7 +16,14 @@ chip northbridge/intel/sandybridge
register "gpu_pch_backlight" = "0x06100610"
register "spd_addresses" = "{0x50, 0, 0x51, 0}"
-
+ chip cpu/intel/model_206ax
+ # Values obtained from vendor BIOS
+ register "pp0_psi[VR12_PSI2]" = "{VR12_ALL_PHASES, 5}"
+ register "pp0_psi[VR12_PSI3]" = "{VR12_ALL_PHASES, 1}"
+ register "pp1_psi[VR12_PSI2]" = "{VR12_ALL_PHASES, 5}"
+ register "pp1_psi[VR12_PSI3]" = "{VR12_ALL_PHASES, 1}"
+ device cpu_cluster 0 on end
+ end
device domain 0 on
subsystemid 0x17aa 0x21d2 inherit
diff --git a/src/mainboard/lenovo/t520/devicetree.cb b/src/mainboard/lenovo/t520/devicetree.cb
index a2e12c34d7..5edb63e95d 100644
--- a/src/mainboard/lenovo/t520/devicetree.cb
+++ b/src/mainboard/lenovo/t520/devicetree.cb
@@ -15,6 +15,14 @@ chip northbridge/intel/sandybridge
register "gpu_cpu_backlight" = "0x1155"
register "gpu_pch_backlight" = "0x06100610"
+ chip cpu/intel/model_206ax
+ # Values obtained from vendor BIOS
+ register "pp0_psi[VR12_PSI2]" = "{VR12_ALL_PHASES, 5}"
+ register "pp0_psi[VR12_PSI3]" = "{VR12_ALL_PHASES, 1}"
+ register "pp1_psi[VR12_PSI2]" = "{VR12_ALL_PHASES, 5}"
+ register "pp1_psi[VR12_PSI3]" = "{VR12_ALL_PHASES, 1}"
+ device cpu_cluster 0 on end
+ end
device domain 0 on
subsystemid 0x17aa 0x21cf inherit