From: Giovanni Gherdovich <ggherdovich@suse.cz>
Date: Tue, 18 May 2021 14:34:12 +0200
Subject: cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode
Patch-mainline: Submitted https://lore.kernel.org/lkml/20210518123413.20670-1-ggherdovich@suse.cz
References: bsc#1185758

Users may disable HWP in firmware, in which case intel_pstate wouldn't load
unless the CPU model is explicitly supported.

Add ICELAKE_X to the list of CPUs that can register intel_pstate while not
advertising the HWP capability. Without this change, an ICELAKE_X in no-HWP
mode could only use the acpi_cpufreq frequency scaling driver.

See also commit d8de7a44e11f ("cpufreq: intel_pstate: Add Skylake servers
support").

Signed-off-by: Giovanni Gherdovich <ggherdovich@suse.cz>
---
 drivers/cpufreq/intel_pstate.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2166,6 +2166,7 @@ static const struct x86_cpu_id intel_pst
 	X86_MATCH(ATOM_GOLDMONT,	core_funcs),
 	X86_MATCH(ATOM_GOLDMONT_PLUS,	core_funcs),
 	X86_MATCH(SKYLAKE_X,		core_funcs),
+	X86_MATCH(ICELAKE_X,		core_funcs),
 	{}
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);