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-rw-r--r--0008-x86-intel-Disable-HPET-on-Intel-Ice-Lake-platforms.patch38
1 files changed, 38 insertions, 0 deletions
diff --git a/0008-x86-intel-Disable-HPET-on-Intel-Ice-Lake-platforms.patch b/0008-x86-intel-Disable-HPET-on-Intel-Ice-Lake-platforms.patch
new file mode 100644
index 00000000000..cc1e60bf1fb
--- /dev/null
+++ b/0008-x86-intel-Disable-HPET-on-Intel-Ice-Lake-platforms.patch
@@ -0,0 +1,38 @@
+From ddb94a8dbd9144d7b85f553cb4a85db2ba62374d Mon Sep 17 00:00:00 2001
+From: Kai-Heng Feng <kai.heng.feng@canonical.com>
+Date: Fri, 29 Nov 2019 14:23:03 +0800
+Subject: [PATCH 08/14] x86/intel: Disable HPET on Intel Ice Lake platforms
+
+Like CFL and CFL-H, ICL SoC has skewed HPET timer once it hits PC10.
+So let's disable HPET on ICL.
+
+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/20191129062303.18982-2-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 606711f5ebf8..2f9ec14be3b1 100644
+--- a/arch/x86/kernel/early-quirks.c
++++ b/arch/x86/kernel/early-quirks.c
+@@ -714,6 +714,8 @@ static struct chipset early_qrk[] __initdata = {
+ 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_INTEL, 0x8a12,
++ PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, force_disable_hpet},
+ { PCI_VENDOR_ID_BROADCOM, 0x4331,
+ PCI_CLASS_NETWORK_OTHER, PCI_ANY_ID, 0, apple_airport_reset},
+ {}
+--
+2.24.1
+