tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1ST M41T80 family of RTC and compatible
2
3Required properties:
4- compatible: should be one of:
5 "st,m41t62",
6 "st,m41t65",
7 "st,m41t80",
8 "st,m41t81",
9 "st,m41t81s",
10 "st,m41t82",
11 "st,m41t83",
12 "st,m41t84",
13 "st,m41t85",
14 "st,m41t87",
15 "microcrystal,rv4162",
16- reg: I2C bus address of the device
17
18Optional properties:
19- interrupts: rtc alarm interrupt.
20- clock-output-names: From common clock binding to override the default output
21 clock name
22- wakeup-source: Enables wake up of host system on alarm
23
24Optional child node:
25- clock: Provide this if the square wave pin is used as boot-enabled fixed clock.
26
27Example:
28 rtc@68 {
29 compatible = "st,m41t80";
30 reg = <0x68>;
31 interrupt-parent = <&UIC0>;
32 interrupts = <0x9 0x8>;
33
34 clock {
35 compatible = "fixed-clock";
36 #clock-cells = <0>;
37 clock-frequency = <32768>;
38 };
39 };