xref: /freebsd/sys/contrib/device-tree/Bindings/rtc/nxp,pcf85063.txt (revision d5b0e70f7e04d971691517ce1304d86a1e367e2e) 
1* NXP PCF85063 Real Time Clock
2
3Required properties:
4- compatible: Should one of contain:
5	"nxp,pca85073a",
6	"nxp,pcf85063",
7	"nxp,pcf85063a",
8	"nxp,pcf85063tp",
9	"microcrystal,rv8263"
10- reg: I2C address for chip.
11
12Optional property:
13- quartz-load-femtofarads: The capacitive load of the quartz(x-tal),
14  expressed in femto Farad (fF). Valid values are 7000 and 12500.
15  Default value (if no value is specified) is 7000fF.
16
17Optional child node:
18- clock: Provide this if the square wave pin is used as boot-enabled fixed clock.
19
20Example:
21
22pcf85063: rtc@51 {
23	compatible = "nxp,pcf85063";
24	reg = <0x51>;
25	quartz-load-femtofarads = <12500>;
26
27		clock {
28			compatible = "fixed-clock";
29			#clock-cells = <0>;
30			clock-frequency = <32768>;
31		};
32};
33