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-rw-r--r--src/mainboard/lenovo/t420/devicetree.cb9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/mainboard/lenovo/t420/devicetree.cb b/src/mainboard/lenovo/t420/devicetree.cb
index d4b31afe88b7..d469da6b7904 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