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From: Zhang Rui <rui.zhang@intel.com>
To: linux@roeck-us.net, jdelvare@suse.com, fenghua.yu@intel.com
Cc: linux-hwmon@vger.kernel.org, srinivas.pandruvada@linux.intel.com
Subject: [PATCH 0/3] hwmon (coretemp): Add support for dynamic tjmax/ttarget
Date: Tue,  8 Nov 2022 15:50:48 +0800	[thread overview]
Message-ID: <20221108075051.5139-1-rui.zhang@intel.com> (raw)

Tjmax value retrieved from MSR_IA32_TEMPERATURE_TARGET can be changed at
runtime when the Intel SST-PP (Intel Speed Select Technology - Performance
Profile) level is changed. As a result, the ttarget temperature also changes.

Enhance the coretemp driver to always use updated tjmax when it can be
retrieved from MSR_IA32_TEMPERATURE_TARGET.

When tjmax can not be retrieved from MSR_IA32_TEMPERATURE_TARGET, stick with
previous behavior and always use static value. Plus that ttarget is not
available in this case.

The same dynaimic tjmax enhancement, for driver/thermal drivers can be found
at https://patchwork.kernel.org/project/linux-pm/list/?series=693050

thanks,
rui

             reply	other threads:[~2022-11-08  7:48 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-08  7:50 Zhang Rui [this message]
2022-11-08  7:50 ` [PATCH 1/3] hwmon (coretemp): Remove obsolete temp_data->valid Zhang Rui
2022-11-11 21:14   ` Guenter Roeck
2022-11-08  7:50 ` [PATCH 2/3] hwmon (coretemp): Add support for dynamic tjmax Zhang Rui
2022-11-11 21:26   ` Guenter Roeck
2022-11-08  7:50 ` [PATCH 3/3] hwmon (coretemp): Add support for dynamic ttarget Zhang Rui
2022-11-11 21:34   ` Guenter Roeck
2022-11-12  8:37     ` Zhang Rui
2022-11-12 15:10       ` Guenter Roeck

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