ACPI: x86: Force enabling of PWM2 on the Yogabook YB1-X90

The PWM2 on YB1-X90 tablets is used for keyboard backlight control but
it is disabled in the ACPI DSDT table. Add it to the override_status_ids
list to allow keyboard function control driver
(drivers/platform/x86/lenovo/yogabook.c) to use it.

Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Link: https://patch.msgid.link/20260211222242.4101162-1-jekhor@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index 4ee30c2897a2b9c0eda7d72ee5626fa4da9f0813..418951639f5116990115544b3c24d102205ec407 100644 (file)
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -81,6 +81,18 @@ static const struct override_status_id override_status_ids[] = {
                DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
              }),
 
+       /*
+        * Lenovo Yoga Book uses PWM2 for touch keyboard backlight control.
+        * It needs to be enabled only for the Android device version (YB1-X90*
+        * aka YETI-11); the Windows version (YB1-X91*) uses ACPI control
+        * methods.
+        */
+       PRESENT_ENTRY_HID("80862289", "2", INTEL_ATOM_AIRMONT, {
+               DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
+               DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
+               DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
+             }),
+
        /*
         * The INT0002 device is necessary to clear wakeup interrupt sources
         * on Cherry Trail devices, without it we get nobody cared IRQ msgs.