x86/intel: Disable HPET on Intel Coffee Lake H platforms

commit f8edbde885bbcab6a2b4a1b5ca614e6ccb807577 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 4cba91ec80492ab42dda142a6555dd6dcf3dfbc0..606711f5ebf8bb04adf77432e9fc7dc782553dec 100644 (file)
--- 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,