tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1JZ4740 and similar SoCs real-time clock driver
2
3Required properties:
4
5- compatible: One of:
6 - "ingenic,jz4740-rtc" - for use with the JZ4740 SoC
7 - "ingenic,jz4780-rtc" - for use with the JZ4780 SoC
8- reg: Address range of rtc register set
9- interrupts: IRQ number for the alarm interrupt
10- clocks: phandle to the "rtc" clock
11- clock-names: must be "rtc"
12
13Optional properties:
14- system-power-controller: To use this component as the
15 system power controller
16- reset-pin-assert-time-ms: Reset pin low-level assertion
17 time after wakeup (default 60ms; range 0-125ms if RTC clock
18 at 32 kHz)
19- min-wakeup-pin-assert-time-ms: Minimum wakeup pin assertion
20 time (default 100ms; range 0-2s if RTC clock at 32 kHz)
21
22Example:
23
24rtc@10003000 {
25 compatible = "ingenic,jz4740-rtc";
26 reg = <0x10003000 0x40>;
27
28 interrupt-parent = <&intc>;
29 interrupts = <32>;
30
31 clocks = <&rtc_clock>;
32 clock-names = "rtc";
33
34 system-power-controller;
35 reset-pin-assert-time-ms = <60>;
36 min-wakeup-pin-assert-time-ms = <100>;
37};