From 60c44e2578d43f9a27fba7b860d05bddee153721 Mon Sep 17 00:00:00 2001 From: Shelley Chen Date: Wed, 1 Aug 2018 10:41:27 -0700 Subject: mb/google/poppy/variants/nami: Enable mbox command for ISL VR c-state issue There is a potential IMVP8 issue for KBL that affects Intersil VRs Nami is using one of the affected parts. The fix is to use an updated microcode and also send a mailbox box command from FSP. BUG=b:112081534 BRANCH=None TEST=Build and boot Nami Verify that suspend/resume and consecutive reboots are working Change-Id: I6ec18a4c3fae6a66cf8a95685d91a8ba51e2697c Signed-off-by: Shelley Chen Reviewed-on: https://review.coreboot.org/27780 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin Reviewed-by: Furquan Shaikh --- src/mainboard/google/poppy/variants/nami/devicetree.cb | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/mainboard/google/poppy/variants') diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb index 3835573720..d505099b94 100644 --- a/src/mainboard/google/poppy/variants/nami/devicetree.cb +++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb @@ -58,6 +58,10 @@ chip soc/intel/skylake register "PmTimerDisabled" = "1" register "VmxEnable" = "1" + # Intersil VR c-state issue workaround + # send VR mailbox command for IA/GT/SA rails + register "IslVrCmd" = "2" + register "pirqa_routing" = "PCH_IRQ11" register "pirqb_routing" = "PCH_IRQ10" register "pirqc_routing" = "PCH_IRQ11" -- cgit v1.2.3