readme.rst: Document minimum Linux version

diff --git a/readme.rst b/readme.rst
index cc557b2ac472a77951921b1ed3935d282bf8973d..f05bb635f404e0427245a37f4fa59f2ca5a8edd8 100644 (file)
--- a/readme.rst
+++ b/readme.rst
@@ -43,6 +43,13 @@ known limitations in older controllers and clones.
 
 
 
+Requirements
+-------------
+
+This requires Linux 4.11 (for 431af779256c), and has been tested on 4.19.
+
+
+
 Data sheet
 -----------