linux-kernel - [PATCH] cpufreq: intel_pstate: Add Emerald Rapids support in no-HWP mode

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Date:   Wed, 13 Dec 2023 18:28:08 +0800
From:   Zhenguo Yao <yaozhenguo1@...il.com>
To:     srinivas.pandruvada@...ux.intel.com, lenb@...nel.org
Cc:     rafael@...nel.org, viresh.kumar@...aro.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        yaozhenguo@...com, Zhenguo Yao <yaozhenguo1@...il.com>
Subject: [PATCH] cpufreq: intel_pstate: Add Emerald Rapids support in no-HWP mode

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

See also the following past commits:

commit df51f287b5de ("cpufreq: intel_pstate: Add Sapphire Rapids support
in no-HWP mode")
commit d8de7a44e11f ("cpufreq: intel_pstate: Add Skylake servers support")
commit 706c5328851d ("cpufreq: intel_pstate: Add Cometlake support in
no-HWP mode")
commit fbdc21e9b038 ("cpufreq: intel_pstate: Add Icelake servers support in
no-HWP mode")
commit 71bb5c82aaae ("cpufreq: intel_pstate: Add Tigerlake support in
no-HWP mode")

Signed-off-by: Zhenguo Yao <yaozhenguo1@...il.com>
---
 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 a534a1f7f1ee..39e0a2cf7236 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2406,6 +2406,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
 	X86_MATCH(ICELAKE_X,		core_funcs),
 	X86_MATCH(TIGERLAKE,		core_funcs),
 	X86_MATCH(SAPPHIRERAPIDS_X,	core_funcs),
+	X86_MATCH(EMERALDRAPIDS_X,      core_funcs),
 	{}
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
-- 
2.39.3