Last month [1]Intel posted new Linux patches for a "SoC power slider" feature premiering with upcoming Intel Core Ultra Series 3 " [2]Panther Lake " laptops. That SoC Power Slider support for the Intel int340x is now expected to be upstreamed with the Linux 6.18 kernel later this year.

The SoC power slider is the newest means for Intel systems to communicate their system-wide energy performance preferences. The SoC Power Slider support on Linux is building off the Linux Platform Profile API and using the same knobs like performance / balanced / low-power modes.

The news now is that the Linux power management subsystem's "linux-next" Git branch has picked up the SoC Power Slider support. [3]This patch adds the SoC Power Slider infrastructure to the int340x driver and the [4]follow-up patch adds the specific integration for Panther Lake support. Plus an extra patch for [5]the balanced slider module parameter and [6]an offset parameter to help in some use cases.

With this Intel SoC Power Slider support queued up into linux-pm.git's linux-next Git branch, the patches are expected to be submitted as part of material for the Linux 6.18 merge window happening in early October. The Linux 6.18 stable release should then be out in December, likely right around the time of beginning to see Panther Lake laptops appearing in the marketplace.



[1] https://www.phoronix.com/news/Intel-Panther-Lake-Power-Slider

[2] https://www.phoronix.com/search/Panther+Lake

[3] https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=0d50f4d6ec5a8fedfd7169417b25672cadd0e652

[4] https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=018d046a1a2cdf917bd8e3b6a3fdab6ce7aa698b

[5] https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=4a64a748e45cded20443ad54826ac78b3967de15

[6] https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git/commit/?h=linux-next&id=8306bcaba06dfa658e3dd852e930b0154cb46c9f