linux-kernel - Re: [PATCH v3 2/2] devicetree: Add Cadence WDT devicetree bindings documentation

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Date:	Mon, 14 Jul 2014 15:35:13 +0200
From:	Michal Simek <michal.simek@...inx.com>
To:	Harini Katakam <harini.katakam@...inx.com>, <wim@...ana.be>,
	<grant.likely@...aro.org>, <robh+dt@...nel.org>,
	<pawel.moll@....com>, <mark.rutland@....com>,
	<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
	<rob@...dley.net>
CC:	<linux-watchdog@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<harinikatakamlinux@...il.com>, Harini Katakam <harinik@...inx.com>
Subject: Re: [PATCH v3 2/2] devicetree: Add Cadence WDT devicetree bindings
 documentation

On 07/14/2014 02:16 PM, Harini Katakam wrote:
> Add cadence-wdt bindings documentation.
> 
> Signed-off-by: Harini Katakam <harinik@...inx.com>
> ---
> 
> v3 changes:
> - Change reset property type and improve description.
> - Improve description of clocks and interrupts.
> - Use watchdog@ in the example.
> - Use only cdns compatible string for now.
> 
> v2:
> No changes
> 
> ---
>  .../devicetree/bindings/watchdog/cadence-wdt.txt   |   27 ++++++++++++++++++++
>  1 file changed, 27 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/watchdog/cadence-wdt.txt
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt b/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt
> new file mode 100644
> index 0000000..ab23e38
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/cadence-wdt.txt
> @@ -0,0 +1,27 @@
> +Zynq Watchdog Device Tree Bindings
> +-------------------------------------------
> +
> +Required properties:
> +- compatible		: Should be "cdns,wdt-r1p2".
> +- clocks		: Input clock specifier. This should be the ref clk.
> +- reg			: Physical base address and size of WDT registers map.
> +- interrupts		: Property with a value describing the interrupt
> +			  number. This interrupt is used for indication
> +			  when the watchdog times out.
> +- interrupt-parent	: Must be core interrupt controller.
> +
> +Optional properties
> +- reset			: If this property exists, then a reset is done
> +			  when watchdog times out.
> +- timeout-sec		: Watchdog timeout value (in seconds).
> +
> +Example:
> +	watchdog@...05000 {
> +		compatible = "xlnx,zynq-wdt-r1p2";

According to description above - you should use cdns compatible string here too.

Thanks,
Michal

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