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x86: Force enable HPET for CK804 (nForce 4) chipsets

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This patch adds a quirk from LinuxBIOS to force enable HPET on
the nVidia CK804 (nForce 4) chipset.

This quirk can very likely support more than just nForce 4
(LinuxBIOS use the same code for nForce 5), and possibly nForce 3,
but I don't have those chipsets, so cannot add and test them.

Tested on an Abit KN9 (CK804).

Signed-off-by: Carlos Corbacho <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>

 Documentation/kernel-parameters.txt |    3 +-
 arch/x86/kernel/quirks.c            |   37 +++++++++++++++++++++++++++++++++++-
 2 files changed, 38 insertions(+), 2 deletions(-)
This commit is contained in:
Carlos Corbacho 2007-10-19 18:51:27 +01:00 • committed by Thomas Gleixner
commit d79a5f80dc
2 changed files with 38 additions and 2 deletions
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3
Documentation/kernel-parameters.txt
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@ -422,7 +422,8 @@ and is between 256 and 4096 characters. It is defined in the file
hpet= [X86-32,HPET] option to control HPET usage
Format: { enable (default) | disable | force }
disable: disable HPET and use PIT instead
force: allow force enabled of undocumented chips (ICH4, VIA)
force: allow force enabled of undocumented chips (ICH4,
VIA, nVidia)
com20020= [HW,NET] ARCnet - COM20020 chipset
Format: