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Commit | Line | Data |
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b0e68674 LJ |
1 | STMicroelectronics Low Power Controller (LPC) - Watchdog |
2 | ======================================================== | |
3 | ||
82c32c03 LJ |
4 | LPC currently supports Watchdog OR Real Time Clock OR Clocksource |
5 | functionality. | |
b0e68674 LJ |
6 | |
7 | [See: ../rtc/rtc-st-lpc.txt for RTC options] | |
82c32c03 | 8 | [See: ../timer/st,stih407-lpc for Clocksource options] |
b0e68674 LJ |
9 | |
10 | Required properties | |
11 | ||
c3025a0b | 12 | - compatible : Should be: "st,stih407-lpc" |
b0e68674 LJ |
13 | - reg : LPC registers base address + size |
14 | - interrupts : LPC interrupt line number and associated flags | |
15 | - clocks : Clock used by LPC device (See: ../clock/clock-bindings.txt) | |
82c32c03 LJ |
16 | - st,lpc-mode : The LPC can run either one of three modes: |
17 | ST_LPC_MODE_RTC [0] | |
18 | ST_LPC_MODE_WDT [1] | |
19 | ST_LPC_MODE_CLKSRC [2] | |
20 | One (and only one) mode must be selected. | |
b0e68674 LJ |
21 | |
22 | Required properties [watchdog mode] | |
23 | ||
24 | - st,syscfg : Phandle to syscfg node used to enable watchdog and configure | |
25 | CPU reset type. | |
26 | - timeout-sec : Watchdog timeout in seconds | |
27 | ||
28 | Optional properties [watchdog mode] | |
29 | ||
30 | - st,warm-reset : If present reset type will be 'warm' - if not it will be cold | |
31 | ||
32 | Example: | |
33 | lpc@fde05000 { | |
34 | compatible = "st,stih407-lpc"; | |
35 | reg = <0xfde05000 0x1000>; | |
36 | clocks = <&clk_s_d3_flexgen CLK_LPC_0>; | |
37 | st,syscfg = <&syscfg_core>; | |
38 | timeout-sec = <120>; | |
39 | st,lpc-mode = <ST_LPC_MODE_WDT>; | |
40 | st,warm-reset; | |
41 | }; |