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From: Giovanni Gherdovich <ggherdovich@suse.cz>
To: "Rafael J . Wysocki" <rjw@rjwysocki.net>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
	Giovanni Gherdovich <ggherdovich@suse.cz>
Subject: [PATCH v2] cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode
Date: Thu, 13 May 2021 15:20:51 +0200	[thread overview]
Message-ID: <20210513132051.31465-1-ggherdovich@suse.cz> (raw)
In-Reply-To: <fb6c8a4e284a9b6c043f4ac382387b19bd100976.camel@linux.intel.com>

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>
---
This replaces https://lore.kernel.org/lkml/20210513075930.22657-1-ggherdovich@suse.cz

 drivers/cpufreq/intel_pstate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index f0401064d7aa..28c9733e0dce 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2087,6 +2087,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
 	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);
-- 
2.26.2


  parent reply	other threads:[~2021-05-13 13:21 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-13  7:59 [PATCH] cpufreq: intel_pstate: Force intel_pstate to load when HWP disabled in firmware Giovanni Gherdovich
2021-05-13  9:24 ` Srinivas Pandruvada
2021-05-13 10:10   ` Giovanni Gherdovich
2021-05-13 11:03     ` Srinivas Pandruvada
2021-05-13 12:10       ` Giovanni Gherdovich
2021-05-13 13:20       ` Giovanni Gherdovich [this message]
2021-05-14 15:31         ` [PATCH v2] cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode Doug Smythies
2021-05-14 20:33           ` Giovanni Gherdovich
2021-05-14 22:12             ` Doug Smythies
2021-09-07 15:45               ` Doug Smythies
2021-09-07 16:01                 ` Srinivas Pandruvada
2021-09-07 20:16                   ` Doug Smythies
2021-09-08  2:04                     ` Srinivas Pandruvada
2021-09-08  3:43                       ` Doug Smythies
2021-09-14 18:41                         ` Doug Smythies
2021-09-15  9:38                           ` Srinivas Pandruvada
2021-05-15  2:58             ` Srinivas Pandruvada
2021-05-17 15:26           ` Rafael J. Wysocki
2021-05-18 11:33             ` Giovanni Gherdovich
2021-05-19  5:37               ` Doug Smythies
2021-05-18 12:34             ` [PATCH v3 1/2] " Giovanni Gherdovich
2021-05-18 12:34               ` [PATCH v3 2/2] cpufreq: intel_pstate: Add Cometlake " Giovanni Gherdovich
2021-05-21 16:49               ` [PATCH v3 1/2] cpufreq: intel_pstate: Add Icelake servers " Rafael J. Wysocki

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