xref: /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/watchdog/mpc8xxx-wdt.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun* Freescale mpc8xxx watchdog driver (For 83xx, 86xx and 8xx)
2*4882a593Smuzhiyun
3*4882a593SmuzhiyunRequired properties:
4*4882a593Smuzhiyun- compatible: Shall contain one of the following:
5*4882a593Smuzhiyun	"mpc83xx_wdt" for an mpc83xx
6*4882a593Smuzhiyun	"fsl,mpc8610-wdt" for an mpc86xx
7*4882a593Smuzhiyun	"fsl,mpc823-wdt" for an mpc8xx
8*4882a593Smuzhiyun- reg: base physical address and length of the area hosting the
9*4882a593Smuzhiyun       watchdog registers.
10*4882a593Smuzhiyun		On the 83xx, "Watchdog Timer Registers" area:	<0x200 0x100>
11*4882a593Smuzhiyun		On the 86xx, "Watchdog Timer Registers" area:	<0xe4000 0x100>
12*4882a593Smuzhiyun		On the 8xx, "General System Interface Unit" area: <0x0 0x10>
13*4882a593Smuzhiyun
14*4882a593SmuzhiyunOptional properties:
15*4882a593Smuzhiyun- reg: additional physical address and length (4) of location of the
16*4882a593Smuzhiyun       Reset Status Register (called RSTRSCR on the mpc86xx)
17*4882a593Smuzhiyun		On the 83xx, it is located at offset 0x910
18*4882a593Smuzhiyun		On the 86xx, it is located at offset 0xe0094
19*4882a593Smuzhiyun		On the 8xx, it is located at offset 0x288
20*4882a593Smuzhiyun
21*4882a593SmuzhiyunExample:
22*4882a593Smuzhiyun		WDT: watchdog@0 {
23*4882a593Smuzhiyun		    compatible = "fsl,mpc823-wdt";
24*4882a593Smuzhiyun		    reg = <0x0 0x10 0x288 0x4>;
25*4882a593Smuzhiyun		};
26