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diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Documentation/admin-guide/laptops/thinkpad-acpi.rst
index 5fe1ade88c17..91fd6846ce17 100644
--- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst
+++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst
@@ -51,6 +51,7 @@ detailed description):
- UWB enable and disable
- LCD Shadow (PrivacyGuard) enable and disable
- Lap mode sensor
+ - Setting keyboard language
A compatibility table by model and feature is maintained on the web
site, http://ibm-acpi.sf.net/. I appreciate any success or failure
@@ -1466,6 +1467,30 @@ Sysfs notes
rfkill controller switch "tpacpi_uwb_sw": refer to
Documentation/driver-api/rfkill.rst for details.
+
+Setting keyboard language
+-------------------------
+
+sysfs: keyboard_lang
+
+This feature is used to set keyboard language to ECFW using ASL interface.
+Fewer thinkpads models like T580 , T590 , T15 Gen 1 etc.. has "=", "(',
+")" numeric keys, which are not displaying correctly, when keyboard language
+is other than "english". This is because the default keyboard language in ECFW
+is set as "english". Hence using this sysfs, user can set the correct keyboard
+language to ECFW and then these key's will work correctly.
+
+Example of command to set keyboard language is mentioned below::
+
+ echo jp > /sys/devices/platform/thinkpad_acpi/keyboard_lang
+
+Text corresponding to keyboard layout to be set in sysfs are: be(Belgian),
+cz(Czech), da(Danish), de(German), en(English), es(Spain), et(Estonian),
+fr(French), fr-ch(French(Switzerland)), hu(Hungarian), it(Italy), jp (Japan),
+nl(Dutch), nn(Norway), pl(Polish), pt(portugese), sl(Slovenian), sv(Sweden),
+tr(Turkey)
+
+
Adaptive keyboard
-----------------