summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMatt DeVillier <matt.devillier@gmail.com>2019-01-05 02:16:39 -0600
committerNico Huber <nico.h@gmx.de>2019-01-06 13:30:57 +0000
commit89393d633d70b9393af5b1c74af95c5e24bd99b0 (patch)
tree8bc2952f16f03ca2901b8715dfad82b2e98dca41
parent796bd74d632f9086029921280afd9ecb75c863af (diff)
downloadcoreboot-89393d633d70b9393af5b1c74af95c5e24bd99b0.tar.xz
mb/google/fizz: enable eist (enhanced speedstep)
Without eist enabled, fizz's CPU clocks are locked at the base frequency, and don't scale up or down. This prevents fizz from idling properly and turbo boost from functioning, so enable it (as is done for all other KBL boards) Test: build/boot google/fizz, ensure CPU clocks scale as expected Change-Id: I77dd0e1df1bf88f5bae18e9f832ca8d60fb777b4 Signed-off-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-on: https://review.coreboot.org/c/30674 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
-rw-r--r--src/mainboard/google/fizz/variants/baseboard/devicetree.cb2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mainboard/google/fizz/variants/baseboard/devicetree.cb b/src/mainboard/google/fizz/variants/baseboard/devicetree.cb
index cc48498dd1..c7c35c04d2 100644
--- a/src/mainboard/google/fizz/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/fizz/variants/baseboard/devicetree.cb
@@ -7,6 +7,8 @@ chip soc/intel/skylake
register "deep_s5_enable_dc" = "1"
register "deep_sx_config" = "DSX_EN_LAN_WAKE_PIN | DSX_EN_WAKE_PIN"
+ register "eist_enable" = "1"
+
# Mapping of USB port # to device
#+----------------+-------+-----------------------------------+
#| Device | Port# | Rev |