Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Giovanni Gherdovich <ggherdovich@suse.cz>
To:     "Rafael J . Wysocki" <rjw@rjwysocki.net>,
        Viresh Kumar <viresh.kumar@linaro.org>
Cc:     Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
        Doug Smythies <dsmythies@telus.net>,
        Len Brown <lenb@kernel.org>, linux-pm@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Giovanni Gherdovich <ggherdovich@suse.cz>
Subject: [PATCH v3 1/2] cpufreq: intel_pstate: Add Icelake servers support in no-HWP mode
Date:   Tue, 18 May 2021 14:34:12 +0200
Message-Id: <20210518123413.20670-1-ggherdovich@suse.cz>
In-Reply-To: <CAJZ5v0g5_BY3DCi=VxqkRh+TYPS5nkJ-J96EzPVrc975uiWf3Q@mail.gmail.com>
References: <CAJZ5v0g5_BY3DCi=VxqkRh+TYPS5nkJ-J96EzPVrc975uiWf3Q@mail.gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

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/20210513132051.31465-1-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 0e69dffd5a76..9a93603acd3f 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