Merge tag 'linux-watchdog-4.20-rc1' of git://www.linux-watchdog.org/linux-watchdog
[sfrench/cifs-2.6.git] / Documentation / devicetree / bindings / watchdog / renesas-wdt.txt
1 Renesas Watchdog Timer (WDT) Controller
2
3 Required properties:
4  - compatible : Must be "renesas,<soctype>-wdt", followed by a generic
5                 fallback compatible string when compatible with the generic
6                 version.
7                Examples with soctypes are:
8                  - "renesas,r8a7743-wdt" (RZ/G1M)
9                  - "renesas,r8a7744-wdt" (RZ/G1N)
10                  - "renesas,r8a7745-wdt" (RZ/G1E)
11                  - "renesas,r8a774a1-wdt" (RZ/G2M)
12                  - "renesas,r8a7790-wdt" (R-Car H2)
13                  - "renesas,r8a7791-wdt" (R-Car M2-W)
14                  - "renesas,r8a7792-wdt" (R-Car V2H)
15                  - "renesas,r8a7793-wdt" (R-Car M2-N)
16                  - "renesas,r8a7794-wdt" (R-Car E2)
17                  - "renesas,r8a7795-wdt" (R-Car H3)
18                  - "renesas,r8a7796-wdt" (R-Car M3-W)
19                  - "renesas,r8a77965-wdt" (R-Car M3-N)
20                  - "renesas,r8a77970-wdt" (R-Car V3M)
21                  - "renesas,r8a77990-wdt" (R-Car E3)
22                  - "renesas,r8a77995-wdt" (R-Car D3)
23                  - "renesas,r7s72100-wdt" (RZ/A1)
24                  - "renesas,r7s9210-wdt"  (RZ/A2)
25                 The generic compatible string must be:
26                  - "renesas,rza-wdt" for RZ/A
27                  - "renesas,rcar-gen2-wdt" for R-Car Gen2 and RZ/G1
28                  - "renesas,rcar-gen3-wdt" for R-Car Gen3 and RZ/G2
29
30 - reg : Should contain WDT registers location and length
31 - clocks : the clock feeding the watchdog timer.
32
33 Optional properties:
34 - timeout-sec : Contains the watchdog timeout in seconds
35 - power-domains : the power domain the WDT belongs to
36 - interrupts: Some WDTs have an interrupt when used in interval timer mode
37
38 Examples:
39
40         wdt0: watchdog@e6020000 {
41                 compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
42                 reg = <0 0xe6020000 0 0x0c>;
43                 clocks = <&cpg CPG_MOD 402>;
44                 power-domains = <&cpg>;
45                 timeout-sec = <60>;
46         };