mb/google/skyrim/var/winterhold: Enable RTD3 support for eMMC as NVMe
winterhold/whiterun has different H/W topology to skyrim that the eMMC device
is on a different GPP:
skyrim: GPP1 -> SD
winterhold : GPP1 -> eMMC
BUG=b:263763288
BRANCH=none
TEST=s0i3 stress over 2500 cycles.
Signed-off-by: Chris.Wang <chris.wang@amd.corp-partner.google.com>
Change-Id: Ie6af4287057c6befa0b787ac28d7898166401b29
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71277
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
diff --git a/src/mainboard/google/skyrim/variants/winterhold/overridetree.cb b/src/mainboard/google/skyrim/variants/winterhold/overridetree.cb
index 9d226f1..1d50bd5 100644
--- a/src/mainboard/google/skyrim/variants/winterhold/overridetree.cb
+++ b/src/mainboard/google/skyrim/variants/winterhold/overridetree.cb
@@ -99,6 +99,21 @@
register "stt_skin_temp_apu_F" = "0x3200"
device domain 0 on
+ device ref gpp_bridge_1 on
+ # Required so the NVMe gets placed into D3 when entering S0i3.
+ chip drivers/pcie/rtd3/device
+ register "name" = ""NVME""
+ device pci 00.0 on end
+ end
+ end # eMMC
+ device ref gpp_bridge_2 on
+ # Required so the NVMe gets placed into D3 when entering S0i3.
+ chip drivers/pcie/rtd3/device
+ register "name" = ""NVME""
+ device pci 00.0 on end
+ end
+ end # NVMe
+
device ref gpp_bridge_a on # Internal GPP Bridge 0 to Bus A
device ref xhci_1 on # XHCI1 controller
chip drivers/usb/acpi