From d112ebe17985ec073ae6edd0d46fa7a18fbe50cd Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Fri, 29 Nov 2019 14:23:02 +0800 Subject: x86/intel: Disable HPET on Intel Coffee Lake H platforms Coffee Lake H SoC has similar behavior as Coffee Lake, skewed HPET timer once the SoCs entered PC10. So let's disable HPET on CFL-H platforms. Signed-off-by: Kai-Heng Feng Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: bp@alien8.de Cc: feng.tang@intel.com Cc: harry.pan@intel.com Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/20191129062303.18982-1-kai.heng.feng@canonical.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/early-quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c index 4cba91ec8049..606711f5ebf8 100644 --- a/arch/x86/kernel/early-quirks.c +++ b/arch/x86/kernel/early-quirks.c @@ -710,6 +710,8 @@ static struct chipset early_qrk[] __initdata = { */ { PCI_VENDOR_ID_INTEL, 0x0f00, PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, + { PCI_VENDOR_ID_INTEL, 0x3e20, + PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, { PCI_VENDOR_ID_INTEL, 0x3ec4, PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet}, { PCI_VENDOR_ID_BROADCOM, 0x4331, -- cgit v1.2.1-1-g437b