mb/lenovo: Enable MEI on Sandy Bridge ThinkPads
It was already enabled on T520 and L520, but disabled on X220, T420 and
T420s.
On X220, it was disabled by commit 0793afe9 (mb/lenovo/x220: disable ME).
I can't reproduce those issues today on linux 4.4 and linux 5.13.
Also, it breaks the me_disable feature, we already have a Kconfig option
to hide MEI in case of errors, and it will be hidden on disabled,
recovery, firmware update paths anyway.
Change-Id: I8e6d067a9c728443d00df541ac7a9a878df58b6a
Signed-off-by: Evgeny Zinoviev <me@ch1p.io>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59527
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
diff --git a/src/mainboard/lenovo/t420/devicetree.cb b/src/mainboard/lenovo/t420/devicetree.cb
index e42e519..457ccbe 100644
--- a/src/mainboard/lenovo/t420/devicetree.cb
+++ b/src/mainboard/lenovo/t420/devicetree.cb
@@ -61,7 +61,7 @@
register "spi_uvscc" = "0x2005"
register "spi_lvscc" = "0x2005"
- device pci 16.0 off end # Management Engine Interface 1
+ device pci 16.0 on end # Management Engine Interface 1
device pci 16.1 off end # Management Engine Interface 2
device pci 16.2 off end # Management Engine IDE-R
device pci 16.3 off end # Management Engine KT