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mb/lenovo/x220: disable ME 

The ME hangs, the lspci shows no memory and the linux kernel
tries to request irq 0 twice. After suspend-resume the linux
kernel warns about double used irq.

genirq: Flags mismatch irq 0. 00000080 (mei_me) vs. 00015a00 (timer)
mei_me 0000:00:16.0: request_threaded_irq failed: irq = 0.
dpm_run_callback(): pci_pm_resume+0x0/0xa0 returns -16
PM: Device 0000:00:16.0 failed to resume async: error -16

Change-Id: I56ef66388e58dddcfb858294ba274621c55fbef6
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Reviewed-on: https://review.coreboot.org/14309
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
This commit is contained in:
Alexander Couzens 2016-04-10 23:19:18 +02:00 committed by Martin Roth
parent a53958098e
commit 0793afe913
1 changed files with 1 additions and 3 deletions
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4
src/mainboard/lenovo/x220/devicetree.cb
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@ -71,9 +71,7 @@ chip northbridge/intel/sandybridge
register "c2_latency" = "101" # c2 not supported
register "p_cnt_throttling_supported" = "1"
device pci 16.0 on
subsystemid 0x17aa 0x21db
end # Management Engine Interface 1
device pci 16.0 off 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