--- v3
+++ v6
@@ -1,3 +1,10 @@
+Acer A500 uses Atmel Maxtouch 1386 touchscreen controller. This controller
+has WAKE line which could be connected to I2C clock lane, dedicated GPIO
+or fixed to HIGH level. Controller wakes up from a deep sleep when WAKE
+line is asserted low. Acer A500 has WAKE line connected to I2C clock and
+Linux device driver doesn't work property without knowing what wakeup
+method is used by h/w.
+
Add atmel,wakeup-method property to the touchscreen node.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>