google/pyro: Set PL2 override to 15000mW

This patch sets PL2 override value to 15W in RAPL registers
and sets DPTF PL2 Max to 15W

BUG=none
BRANCH=reef
TEST=emerge-pyro coreboot
Change-Id: Ibadf0fa442f556d018c249b1cf88e29c4d57c97f
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/17779
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/mainboard/google/reef/variants/pyro/devicetree.cb b/src/mainboard/google/reef/variants/pyro/devicetree.cb
index b5e050e..bc06bbb 100644
--- a/src/mainboard/google/reef/variants/pyro/devicetree.cb
+++ b/src/mainboard/google/reef/variants/pyro/devicetree.cb
@@ -53,6 +53,8 @@
 	# current VR solution. Experiments show that SoC TDP max (6W) can
 	# be reached when RAPL PL1 is set to 12W.
 	register "tdp_pl1_override_mw" = "12000"
+	# Set RAPL PL2 to 15W.
+	register "tdp_pl2_override_mw" = "15000"
 
 	# Enable Audio Clock and Power gating
 	register "hdaudio_clk_gate_enable" = "1"