Commit be49bbae authored by Fabio Porcedda's avatar Fabio Porcedda Committed by Nicolas Ferre
Browse files

watchdog: at91sam9_wdt: add device tree support 



Tested on an at91sam9260 board (evk-pro3)

Signed-off-by: default avatarFabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
parent 8cf70f3d

Documentation/devicetree/bindings/watchdog/atmel-wdt.txt

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+15 −0
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* Atmel Watchdog Timers



** at91sam9-wdt



Required properties:

- compatible: must be "atmel,at91sam9260-wdt".

- reg: physical base address of the controller and length of memory mapped

  region.



Example:



	watchdog@fffffd40 {

		compatible = "atmel,at91sam9260-wdt";

		reg = <0xfffffd40 0x10>;

	};

drivers/watchdog/at91sam9_wdt.c

+11 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#include <linux/timer.h>

#include <linux/bitops.h>

#include <linux/uaccess.h>

#include <linux/of.h>



#include "at91sam9_wdt.h"
@@ -302,11 +303,21 @@ static int __exit at91wdt_remove(struct platform_device *pdev) 
	return res;

}



#if defined(CONFIG_OF)

static const struct of_device_id at91_wdt_dt_ids[] __initconst = {

	{ .compatible = "atmel,at91sam9260-wdt" },

	{ /* sentinel */ }

};



MODULE_DEVICE_TABLE(of, at91_wdt_dt_ids);

#endif



static struct platform_driver at91wdt_driver = {

	.remove		= __exit_p(at91wdt_remove),

	.driver		= {

		.name	= "at91_wdt",

		.owner	= THIS_MODULE,

		.of_match_table = of_match_ptr(at91_wdt_dt_ids),

	},

};