[1/3] dt-bindings: watchdog: sam9x60_wdt: add bindings
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  • [1/3] dt-bindings: watchdog: sam9x60_wdt: add bindings
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Commit Message

Eugen Hristev Oct. 2, 2019, 7:35 a.m. UTC
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

Comments

Alexandre Belloni Oct. 2, 2019, 9:56 a.m. UTC | #1
On 02/10/2019 07:35:23+0000, Eugen.Hristev@microchip.com wrote:
> 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.
> 

Maybe it can then use the same documentation file. However, I think you
should already use the yaml dt bindings schema instead of a simple text
file.

> 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
>

Patch
diff mbox series

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;
+	};