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Subject[PATCH 1/3] dt-bindings: watchdog: sam9x60_wdt: add bindings
Date
From: Eugen Hristev <eugen.hristev@microchip.com>

Add bindings for Microchip SAM9X60 Watchdog Timer

It has the same bindings as
Documentation/devicetree/bindings/watchdog/atmel-sama5d4-wdt.txt
except the compatible.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
.../devicetree/bindings/watchdog/sam9x60-wdt.txt | 34 ++++++++++++++++++++++
1 file changed, 34 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/sam9x60-wdt.txt

diff --git a/Documentation/devicetree/bindings/watchdog/sam9x60-wdt.txt b/Documentation/devicetree/bindings/watchdog/sam9x60-wdt.txt
new file mode 100644
index 00000000..74b4e2d
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/sam9x60-wdt.txt
@@ -0,0 +1,34 @@
+* Microchip SAM9X60 Watchdog Timer (WDT) Controller
+
+Required properties:
+- compatible: "microchip,sam9x60-wdt"
+- reg: base physical address and length of memory mapped region.
+
+Optional properties:
+- timeout-sec: watchdog timeout value (in seconds).
+- interrupts: interrupt number to the CPU.
+- atmel,watchdog-type: should be "hardware" or "software".
+ "hardware": enable watchdog fault reset. A watchdog fault triggers
+ watchdog reset.
+ "software": enable watchdog fault interrupt. A watchdog fault asserts
+ watchdog interrupt.
+- atmel,idle-halt: present if you want to stop the watchdog when the CPU is
+ in idle state.
+ CAUTION: This property should be used with care, it actually makes the
+ watchdog not counting when the CPU is in idle state, therefore the
+ watchdog reset time depends on mean CPU usage and will not reset at all
+ if the CPU stop working while it is in idle state, which is probably
+ not what you want.
+- atmel,dbg-halt: present if you want to stop the watchdog when the CPU is
+ in debug state.
+
+Example:
+ watchdog@ffffff80 {
+ compatible = "microchip,sam9x60-wdt";
+ reg = <0xffffff80 0x24>;
+ interrupts = <1 IRQ_TYPE_LEVEL_HIGH 5>;
+ timeout-sec = <10>;
+ atmel,watchdog-type = "hardware";
+ atmel,dbg-halt;
+ atmel,idle-halt;
+ };
--
2.7.4
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