53 lines
1.4 KiB
Plaintext
53 lines
1.4 KiB
Plaintext
|
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",
|
||
|
|
"st,m41t11",
|
||
|
|
"microchip,mcp7940x",
|
||
|
|
"microchip,mcp7941x",
|
||
|
|
"pericom,pt7c4338",
|
||
|
|
"epson,rx8025",
|
||
|
|
"isil,isl12057"
|
||
|
|
"epson,rx8130"
|
||
|
|
- reg: I2C bus address of the device
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
- 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
|
||
|
|
- trickle-resistor-ohms : ds1339, ds1340 and ds 1388 only
|
||
|
|
Selected resistor for trickle charger
|
||
|
|
Possible values are 250, 2000, 4000
|
||
|
|
Should be given if trickle charger should be enabled
|
||
|
|
- aux-voltage-chargeable: ds1339, ds1340, ds1388 and rx8130 only
|
||
|
|
Tells whether the battery/supercap of the RTC (if any) is
|
||
|
|
chargeable or not.
|
||
|
|
Possible values are 0 (not chargeable), 1 (chargeable)
|
||
|
|
|
||
|
|
Deprecated properties:
|
||
|
|
- trickle-diode-disable : ds1339, ds1340 and ds1388 only
|
||
|
|
Do not use internal trickle charger diode
|
||
|
|
Should be given if internal trickle charger diode should be disabled
|
||
|
|
(superseded by aux-voltage-chargeable)
|
||
|
|
|
||
|
|
Example:
|
||
|
|
ds1339: rtc@68 {
|
||
|
|
compatible = "dallas,ds1339";
|
||
|
|
reg = <0x68>;
|
||
|
|
interrupt-parent = <&gpio4>;
|
||
|
|
interrupts = <20 0>;
|
||
|
|
trickle-resistor-ohms = <250>;
|
||
|
|
};
|