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authorDavid Wu <david_wu@quanta.corp-partner.google.com>2020-06-11 13:59:34 +0800
committerPatrick Georgi <pgeorgi@google.com>2020-06-22 12:28:34 +0000
commit3f7a52f00e0781c2439a29a3637cb2b43762c478 (patch)
tree2adfa01626ce51f58a841dee99611cf06e9a4902 /src/mainboard/google
parent63ce260a3ea8da00973d48af7c04a215e8163985 (diff)
downloadcoreboot-3f7a52f00e0781c2439a29a3637cb2b43762c478.tar.xz
mb/google/volteer/variants/terrador: Enable Cmd Mirror
Enable CmdMirror for Terrador to achieve optimum routing from SoC to DRAMs BUG=b:156435028 BRANCH=none TEST=FW_NAME=terrador emerge-volteer coreboot chromeos-bootimage Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com> Change-Id: I0db9fff0dddf35c99a6cb2a90d40886ed8e18686 Reviewed-on: https://review.coreboot.org/c/coreboot/+/42274 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/mainboard/google')
-rw-r--r--src/mainboard/google/volteer/variants/terrador/overridetree.cb5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/variants/terrador/overridetree.cb b/src/mainboard/google/volteer/variants/terrador/overridetree.cb
index 4bff10d40d..81da6bdee9 100644
--- a/src/mainboard/google/volteer/variants/terrador/overridetree.cb
+++ b/src/mainboard/google/volteer/variants/terrador/overridetree.cb
@@ -1,4 +1,9 @@
chip soc/intel/tigerlake
+ # BitMask where bits [3:0] are Controller 0 Channel [3:0] and
+ # bits [7:4] are Controller 1 Channel [3:0].
+ # Enable Command Mirroring for controller 0 channel 0 and 1,
+ # and controller 1 channel 0 and 1.
+ register "CmdMirror" = "0x00000033"
device domain 0 on
device pci 15.1 on
chip drivers/i2c/hid