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Disable the 8042 MUX on our x86 devices.

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The use of the mux can cause issues with some EC 8042 controllers and
result in loss of keyboard/trackpad between suspend/resume/reboot cycles.
We will never have more than keyboard+trackpad attached through the 8042
on our devices so using the mux is unnecessary.

BUG=chrome-os-partner:2700
TEST=manual verification that mux is not probed at boot:

Original:
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX0 port at 0x60,0x64 irq 12
serio: i8042 AUX1 port at 0x60,0x64 irq 12
serio: i8042 AUX2 port at 0x60,0x64 irq 12
serio: i8042 AUX3 port at 0x60,0x64 irq 12

New:
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12

Change-Id: I942ab86eb71941ab072ad6a17d15b067ca94439d

Review URL: http://codereview.chromium.org/6679031
This commit is contained in:
Duncan Laurie 2011-03-12 15:45:19 -08:00
parent 0cc50a4077
commit 4deda9c24f
1 changed files with 1 additions and 0 deletions
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build_kernel_image.sh
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@ -168,6 +168,7 @@ kern_guid=%U
tpm_tis.force=1
tpm_tis.interrupts=0
nmi_watchdog=panic,lapic
i8042.nomux=1
EOF
WORK="${WORK} ${FLAGS_working_dir}/config.txt"