@@ -428,4 +428,21 @@ X!Idrivers/video/console/fonts.c
!Edrivers/i2c/i2c-core.c
</chapter>
+ <chapter id="hsi">
+ <title>High Speed Synchronous Serial Interface (HSI)</title>
+
+ <para>
+ High Speed Synchronous Serial Interface (HSI) is a
+ serial interface mainly used for connecting application
+ engines (APE) with cellular modem engines (CMT) in cellular
+ handsets.
+
+ HSI provides multiplexing for up to 16 logical channels,
+ low-latency and full duplex communication.
+ </para>
+
+!Iinclude/linux/hsi/hsi.h
+!Edrivers/hsi/hsi.c
+ </chapter>
+
</book>