1What: /sys/devices/platform/<platform>/tt_toggle 2Date: Jun 2023 3KernelVersion: 6.5 4Contact: "Antheas Kapenekakis" <lkml@antheas.dev> 5Description: 6 Takeover TDP controls from the device. OneXPlayer devices have a 7 turbo button that can be used to switch between two TDP modes 8 (usually 15W and 25W). By setting this attribute to 1, this 9 functionality is disabled, handing TDP control over to (Windows) 10 userspace software and the Turbo button turns into a keyboard 11 shortcut over the AT keyboard of the device. In addition, 12 using this setting is a prerequisite for PWM control for most 13 newer models (otherwise it NOOPs). 14 15What: /sys/devices/platform/<platform>/tt_led 16Date: April 2025 17KernelVersion: 6.16 18Contact: "Antheas Kapenekakis" <lkml@antheas.dev> 19Description: 20 Some OneXPlayer devices (e.g., X1 series) feature a little LED 21 nested in the Turbo button. This LED is illuminated when the 22 device is in the higher TDP mode (e.g., 25W). Once tt_toggle 23 is engaged, this LED is left dangling to its last state. This 24 attribute allows userspace to control the LED state manually 25 (either with 1 or 0). Only a subset of devices contain this LED. 26