dt-bindings: rtc: DS1307 and compatibles are not trivial

Document optional properties for ds1307 and compatible RTCs
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/rtc/rtc-ds1307.txt

+Dallas DS1307 and compatible RTC
+
+Required properties:
+- compatible: should be one of:
+	"dallas,ds1307",
+	"dallas,ds1308",
+	"dallas,ds1337",
+	"dallas,ds1338",
+	"dallas,ds1339",
+	"dallas,ds1388",
+	"dallas,ds1340",
+	"dallas,ds1341",
+	"maxim,ds3231",
+	"st,m41t0",
+	"st,m41t00",
+	"microchip,mcp7940x",
+	"microchip,mcp7941x",
+	"pericom,pt7c4338",
+	"epson,rx8025",
+	"isil,isl12057"
+- 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:
+	rtc1: ds1339@68 {
+		compatible = "dallas,ds1339";
+		reg = <0x68>;
+		interrupt-parent = <&gpio4>;
+		interrupts = <20 0>;
+	};

Documentation/devicetree/bindings/trivial-devices.txt

@@ -36,9 +36,6 @@ atmel,at97sc3204t	i2c trusted platform module (TPM)
 capella,cm32181		CM32181: Ambient Light Sensor
 capella,cm3232		CM3232: Ambient Light Sensor
 cirrus,cs42l51		Cirrus Logic CS42L51 audio codec
-dallas,ds1307		64 x 8, Serial, I2C Real-Time Clock
-dallas,ds1338		I2C RTC with 56-Byte NV RAM
-dallas,ds1340		I2C RTC with Trickle Charger
 dallas,ds1374		I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
 dallas,ds1631		High-Precision Digital Thermometer
 dallas,ds1672		Dallas DS1672 Real-time Clock
@@ -55,7 +52,6 @@ dlg,da9063		DA9063: system PMIC for quad-core application processors
 domintech,dmard09	DMARD09: 3-axis Accelerometer
 domintech,dmard10	DMARD10: 3-axis Accelerometer
 epson,rx8010		I2C-BUS INTERFACE REAL TIME CLOCK MODULE
-epson,rx8025		High-Stability. I2C-Bus INTERFACE REAL TIME CLOCK MODULE
 epson,rx8581		I2C-BUS INTERFACE REAL TIME CLOCK MODULE
 emmicro,em3027		EM Microelectronic EM3027 Real-time Clock
 fsl,mag3110		MAG3110: Xtrinsic High Accuracy, 3D Magnetometer
@@ -179,8 +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,m41t0		Serial real-time clock (RTC)
-st,m41t00		Serial real-time clock (RTC)
 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