xref: /freebsd/sys/contrib/device-tree/Bindings/rtc/faraday,ftrtc010.txt (revision fe6060f10f634930ff71b7c50291ddc610da2475)
1* Faraday Technology FTRTC010 Real Time Clock
2
3This RTC appears in for example the Storlink Gemini family of
4SoCs.
5
6Required properties:
7- compatible : Should be one of:
8  "faraday,ftrtc010"
9  "cortina,gemini-rtc", "faraday,ftrtc010"
10
11Optional properties:
12- clocks: when present should contain clock references to the
13  PCLK and EXTCLK clocks. Faraday calls the later CLK1HZ and
14  says the clock should be 1 Hz, but implementers actually seem
15  to choose different clocks here, like Cortina who chose
16  32768 Hz (a typical low-power clock).
17- clock-names: should name the clocks "PCLK" and "EXTCLK"
18  respectively.
19
20Examples:
21
22rtc@45000000 {
23	compatible = "cortina,gemini-rtc";
24	reg = <0x45000000 0x100>;
25	interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
26	clocks = <&foo 0>, <&foo 1>;
27	clock-names = "PCLK", "EXTCLK";
28};
29