diff options
| author | Shelley Chen <shchen@google.com> | 2018-08-01 10:41:27 -0700 |
|---|---|---|
| committer | Shelley Chen <shchen@google.com> | 2018-08-02 18:23:25 +0000 |
| commit | 60c44e2578d43f9a27fba7b860d05bddee153721 (patch) | |
| tree | 1f63067f8129cc03e45749c3919121b305f65ea3 | |
| parent | 57454563436d02962f48d609aa06273ccb9bbe1a (diff) | |
| download | coreboot-60c44e2578d43f9a27fba7b860d05bddee153721.tar.xz | |
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 <shchen@google.com>
Reviewed-on: https://review.coreboot.org/27780
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
| -rw-r--r-- | src/mainboard/google/poppy/variants/nami/devicetree.cb | 4 |
1 files changed, 4 insertions, 0 deletions
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" |