From 4c967471383ab18895c4a25615b75a6aba15686f Mon Sep 17 00:00:00 2001 From: Mark Hasemeyer Date: Tue, 9 May 2023 23:19:05 -0600 Subject: [PATCH] mb/google/skyrim: Enable DmaProperty on WLAN device Set the DmaProperty in the device's _DSD so that the OS can treat the device as untrusted. BUG=b:278310256 TEST=cat /sys/bus/pci/devices//untrusted == 1 iperf3 -c -t 60 (No performance regressions seen) Change-Id: I06369a19afa5b881b26f5c1eb243e2db41a9bb36 Signed-off-by: Mark Hasemeyer Reviewed-on: https://review.coreboot.org/c/coreboot/+/75095 Reviewed-by: Karthik Ramasubramanian Tested-by: build bot (Jenkins) Reviewed-by: Tim Van Patten --- 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 f863197e9e..d0d60bd539 100644 --- a/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/skyrim/variants/baseboard/devicetree.cb @@ -94,6 +94,7 @@ chip soc/amd/mendocino chip drivers/pcie/generic register "wake_gpe" = "GEVENT_8" register "wake_deepest" = "ACPI_S0" + register "add_acpi_dma_property" = "true" register "name" = ""WLAN"" device pci 00.0 on end end