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[mirror_ubuntu-bionic-kernel.git] / Documentation / devicetree / bindings / rtc / rtc-st-lpc.txt
1 STMicroelectronics Low Power Controller (LPC) - RTC
2 ===================================================
3
4 LPC currently supports Watchdog OR Real Time Clock functionality.
5
6 [See: ../watchdog/st_lpc_wdt.txt for Watchdog options]
7
8 Required properties
9
10 - compatible : Must be one of: "st,stih407-lpc" "st,stih416-lpc"
11 "st,stih415-lpc" "st,stid127-lpc"
12 - reg : LPC registers base address + size
13 - interrupts : LPC interrupt line number and associated flags
14 - clocks : Clock used by LPC device (See: ../clock/clock-bindings.txt)
15 - st,lpc-mode : The LPC can run either one of two modes ST_LPC_MODE_RTC [0] or
16 ST_LPC_MODE_WDT [1]. One (and only one) mode must be
17 selected.
18
19 Example:
20 lpc@fde05000 {
21 compatible = "st,stih407-lpc";
22 reg = <0xfde05000 0x1000>;
23 clocks = <&clk_s_d3_flexgen CLK_LPC_0>;
24 st,lpc-mode = <ST_LPC_MODE_RTC>;
25 };