When tt_toggle was introduced, it was not added to the platform sysfs. Add it, then add documentation for tt_led. Signed-off-by: Antheas Kapenekakis <lkml@xxxxxxxxxxx> --- Documentation/ABI/testing/sysfs-platform-oxp | 26 ++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-platform-oxp diff --git a/Documentation/ABI/testing/sysfs-platform-oxp b/Documentation/ABI/testing/sysfs-platform-oxp new file mode 100644 index 000000000000..776b7dee3d59 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-platform-oxp @@ -0,0 +1,26 @@ +What: /sys/devices/platform/<platform>/tt_toggle +Date: Jun 2023 +KernelVersion: 6.5 +Contact: "Antheas Kapenekakis" <lkml@xxxxxxxxxxx> +Description: + Takeover TDP controls from the device. OneXPlayer devices have a + turbo button that can be used to switch between two TDP modes + (usually 15W and 25W). By setting this attribute to 1, this + functionality is disabled, handing TDP control over to (Windows) + userspace software and the Turbo button turns into a keyboard + shortcut over the AT keyboard of the device. In addition, + using this setting is a prerequisite for PWM control for most + newer models (otherwise it NOOPs). + +What: /sys/devices/platform/<platform>/tt_led +Date: Feb 2025 +KernelVersion: 6.15 +Contact: "Antheas Kapenekakis" <lkml@xxxxxxxxxxx> +Description: + Some OneXPlayer devices (e.g., X1 series) feature a little LED + nested in the Turbo button. This LED is illuminated when the + device is in the higher TDP mode (e.g., 25W). Once tt_toggle + is engaged, this LED is left dangling to its last state. This + attribute allows userspace to control the LED state manually + (either with 1 or 0). Only a subset of devices contain this LED. + -- 2.48.1
