From 89393d633d70b9393af5b1c74af95c5e24bd99b0 Mon Sep 17 00:00:00 2001 From: Matt DeVillier Date: Sat, 5 Jan 2019 02:16:39 -0600 Subject: 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 Reviewed-on: https://review.coreboot.org/c/30674 Tested-by: build bot (Jenkins) Reviewed-by: Arthur Heymans --- src/mainboard/google/fizz/variants/baseboard/devicetree.cb | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/mainboard') 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 | -- cgit v1.2.3