Cc: cphe...@gmail.com
Cc: Lucas Stach <l.st...@pengutronix.de>
Cc: Nikita Yushchenko <nikita.yo...@cogentembedded.com>
Cc: Rob Herring <robh...@kernel.org>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: devicet...@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Rob Herring <robh...@kernel.org>
Acked-for-MFD-by: Lee Jones <lee.jo...@linaro.org>
Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
---
 .../devicetree/bindings/mfd/zii,rave-sp.txt        | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/zii,rave-sp.txt

diff --git a/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt 
b/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt
new file mode 100644
index 000000000000..088eff9ddb78
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/zii,rave-sp.txt
@@ -0,0 +1,39 @@
+Zodiac Inflight Innovations RAVE Supervisory Processor
+
+RAVE Supervisory Processor communicates with SoC over UART. It is
+expected that its Device Tree node is specified as a child of a node
+corresponding to UART controller used for communication.
+
+Required parent device properties:
+
+ - compatible: Should be one of:
+       - "zii,rave-sp-niu"
+       - "zii,rave-sp-mezz"
+       - "zii,rave-sp-esb"
+       - "zii,rave-sp-rdu1"
+       - "zii,rave-sp-rdu2"
+
+ - current-speed: Should be set to baud rate SP device is using
+
+RAVE SP consists of the following sub-devices:
+
+Device                          Description
+------                          -----------
+rave-sp-wdt                    : Watchdog
+rave-sp-nvmem                  : Interface to onborad EEPROM
+rave-sp-backlight              : Display backlight
+rave-sp-hwmon                  : Interface to onboard hardware sensors
+rave-sp-leds                   : Interface to onboard LEDs
+rave-sp-input                  : Interface to onboard power button
+
+Example of usage:
+
+       rdu {
+               compatible = "zii,rave-sp-rdu2";
+               current-speed = <1000000>;
+
+               watchdog {
+                       compatible = "zii,rave-sp-watchdog";
+               };
+       };
+
-- 
2.13.3

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