diff options
Diffstat (limited to '0012-x86-intel-Disable-HPET-on-Intel-Coffee-Lake-H-platforms.patch')
-rw-r--r-- | 0012-x86-intel-Disable-HPET-on-Intel-Coffee-Lake-H-platforms.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/0012-x86-intel-Disable-HPET-on-Intel-Coffee-Lake-H-platforms.patch b/0012-x86-intel-Disable-HPET-on-Intel-Coffee-Lake-H-platforms.patch new file mode 100644 index 0000000..308b2ab --- /dev/null +++ b/0012-x86-intel-Disable-HPET-on-Intel-Coffee-Lake-H-platforms.patch @@ -0,0 +1,40 @@ +From d112ebe17985ec073ae6edd0d46fa7a18fbe50cd Mon Sep 17 00:00:00 2001 +From: Kai-Heng Feng <kai.heng.feng@canonical.com> +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 <kai.heng.feng@canonical.com> +Cc: Linus Torvalds <torvalds@linux-foundation.org> +Cc: Peter Zijlstra <peterz@infradead.org> +Cc: Thomas Gleixner <tglx@linutronix.de> +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 <mingo@kernel.org> +--- + 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 + |