The ST M41T80 family of RTC are not trivial devices, document them.

Signed-off-by: Alexandre Belloni <alexandre.bell...@free-electrons.com>
---
 .../devicetree/bindings/rtc/rtc-m41t80.txt         | 32 ++++++++++++++++++++++
 .../devicetree/bindings/trivial-devices.txt        |  2 --
 2 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/rtc/rtc-m41t80.txt

diff --git a/Documentation/devicetree/bindings/rtc/rtc-m41t80.txt 
b/Documentation/devicetree/bindings/rtc/rtc-m41t80.txt
new file mode 100644
index 000000000000..12add61e5687
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-m41t80.txt
@@ -0,0 +1,32 @@
+ST M41T80 family of RTC and compatible
+
+Required properties:
+- compatible: should be one of:
+       "st,m41t62",
+       "st,m41t65",
+       "st,m41t80",
+       "st,m41t81",
+       "st,m41t81s",
+       "st,m41t82",
+       "st,m41t83",
+       "st,m41t84",
+       "st,m41t85",
+       "st,m41t87",
+       "microcrystal,rv4162",
+- reg: I2C bus address of the device
+
+Optional properties:
+- interrupt-parent: phandle for the interrupt controller.
+- interrupts: rtc alarm interrupt.
+- clock-output-names: From common clock binding to override the default output
+                      clock name
+- wakeup-source: Enables wake up of host system on alarm
+
+Example:
+       rtc@68 {
+               compatible = "st,m41t80";
+               reg = <0x68>;
+               interrupt-parent = <&UIC0>;
+               interrupts = <0x9 0x8>;
+       };
+
diff --git a/Documentation/devicetree/bindings/trivial-devices.txt 
b/Documentation/devicetree/bindings/trivial-devices.txt
index 4353151367a1..4b169caab0eb 100644
--- a/Documentation/devicetree/bindings/trivial-devices.txt
+++ b/Documentation/devicetree/bindings/trivial-devices.txt
@@ -175,8 +175,6 @@ sii,s35390a         2-wire CMOS real-time clock
 silabs,si7020          Relative Humidity and Temperature Sensors
 skyworks,sky81452      Skyworks SKY81452: Six-Channel White LED Driver with 
Touch Panel Bias Supply
 st,24c256              i2c serial eeprom  (24cxx)
-st,m41t62              Serial real-time clock (RTC) with alarm
-st,m41t80              M41T80 - SERIAL ACCESS RTC WITH ALARMS
 taos,tsl2550           Ambient Light Sensor with SMBUS/Two Wire Serial 
Interface
 ti,ads7828             8-Channels, 12-bit ADC
 ti,ads7830             8-Channels, 8-bit ADC
-- 
2.14.1

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