From e212bdba67e25ded07b0f021fe51f3ceae0a24c0 Mon Sep 17 00:00:00 2001 From: Jason Glenesk Date: Thu, 16 Jun 2022 21:46:12 -0700 Subject: [PATCH] mb/google/skyrim/variants/baseboard: enable iommu With IOMMU disabled, kernel complains that 'IOMMUv2 functionality not available on this system'. Enable iommu in devicetree for skyrim proto board in order to allow kernel to load and initialize IOMMUv2. BUG=b:232750390 TEST=Boot to Chrome OS on skyrim board, and grep dmesg for "AMD IOMMUv2 loaded and initialized" Change-Id: I2f10f5eda8083335619a34c44df253b8e5a8572c Signed-off-by: Jason Glenesk Reviewed-on: https://review.coreboot.org/c/coreboot/+/65190 Tested-by: build bot (Jenkins) Reviewed-by: Marshall Dawson Reviewed-by: Paul Menzel Reviewed-by: Fred Reitberger --- src/mainboard/google/skyrim/variants/baseboard/devicetree.cb | 1 + 1 file changed, 1 insertion(+) diff --git a/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb b/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb index 71db179920..3b7a6013ca 100644 --- a/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb @@ -69,6 +69,7 @@ chip soc/amd/sabrina device pci 00.0 on end end end + device ref iommu on end device ref gpp_bridge_1 on end # SD device ref gpp_bridge_2 on end # NVMe