From 0bc35af93326ec3232ec73c9b1334241b85f0252 Mon Sep 17 00:00:00 2001 From: Kane Chen Date: Wed, 25 Sep 2019 11:41:15 +0800 Subject: [PATCH] mb/google/hatch: Enable PchPmSlpS0Vm075VSupport for hatch On hatch and variant HW designs supports VCCPRIM_CORE Low Voltage Mode. VCCPRIM_CORE can be down to 0.75v when slp_s0 is asserted. This commit enables PchPmSlpS0Vm075VSupport UPD so that FSP can program related setttings to save power. BUG=b:134092071 TEST=Run suspend_stress_test on kohaku and pass 100 cycles Change-Id: Ia02ff8823883489b36349457213409496f082f36 Signed-off-by: Kane Chen Reviewed-on: https://review.coreboot.org/c/coreboot/+/35596 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh --- src/mainboard/google/hatch/variants/baseboard/devicetree.cb | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/mainboard/google/hatch/variants/baseboard/devicetree.cb b/src/mainboard/google/hatch/variants/baseboard/devicetree.cb index 7382209264..a2831e1bba 100644 --- a/src/mainboard/google/hatch/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/hatch/variants/baseboard/devicetree.cb @@ -58,6 +58,8 @@ chip soc/intel/cannonlake register "PmTimerDisabled" = "1" + register "PchPmSlpS0Vm075VSupport" = "1" + # VR Settings Configuration for 4 Domains #+----------------+-------+-------+-------+-------+ #| Domain/Setting | SA | IA | GTUS | GTS |