Add description of DT bindings for mpc8xxx-wdt driver which
handles the CPU watchdog timer on the mpc83xx, mpc86xx and mpc8xx.
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx>
---
.../devicetree/bindings/watchdog/mpc8xxx-wdt.txt | 25 ++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/mpc8xxx-wdt.txt
diff --git a/Documentation/devicetree/bindings/watchdog/mpc8xxx-wdt.txt b/Documentation/devicetree/bindings/watchdog/mpc8xxx-wdt.txt
new file mode 100644
index 000000000000..1d99e1e4d306
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/mpc8xxx-wdt.txt
@@ -0,0 +1,25 @@
+* Freescale mpc8xxx watchdog driver (For 83xx, 86xx and 8xx)
+
+Required properties:
+- compatible: Shall contain one of the following:
+ "mpc83xx_wdt" for an mpc83xx
+ "fsl,mpc8610-wdt" for an mpc86xx
+ "fsl,mpc823-wdt" for an mpc8xx
+- reg: base physical address and length of the area hosting the
+ watchdog registers.
+ On the 83xx, "Watchdog Timer Registers" area: <0x200 0x100>
+ On the 86xx, "Watchdog Timer Registers" area: <0xe4000 0x100>
+ On the 8xx, "General System Interface Unit" area: <0x0 0x10>
+
+Optional properties:
+- reg: additionnal physical address and length (4) of location of the
+ Reset Status Register (called RSTRSCR on the mpc86xx)
+ On the 83xx, it is located at offset 0x910
+ On the 86xx, it is located at offset 0xe0094
+ On the 8xx, it is located at offset 0x288
+
+Example:
+ WDT: watchdog@0 {
+ compatible = "fsl,mpc823-wdt";
+ reg = <0x0 0x10 0x288 0x4>;
+ };
--
2.13.3
