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Commit 58e56373 authored by Dinh Nguyen's avatar Dinh Nguyen Committed by Wim Van Sebroeck
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watchdog: dw: Enable OF support for DW watchdog timer 



Add device tree support to the DW watchdog timer.

Signed-off-by: default avatarDinh Nguyen <dinguyen@altera.com>
Acked-by: default avatarJamie Iles <jamie@jamieiles.com>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Reviewed-by: default avatarPavel Machek <pavel@denx.de>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: devicetree@vger.kernel.org
Cc: linux-watchdog@vger.kernel.org
parent 487722cf

Documentation/devicetree/bindings/watchdog/dw_wdt.txt

0 → 100644
+21 −0
Original line number Diff line number Diff line 
Synopsys Designware Watchdog Timer



Required Properties:



- compatible	: Should contain "snps,dw-wdt"

- reg		: Base address and size of the watchdog timer registers.

- clocks	: phandle + clock-specifier for the clock that drives the

		watchdog timer.



Optional Properties:



- interrupts	: The interrupt used for the watchdog timeout warning.



Example:



	watchdog0: wd@ffd02000 {

		compatible = "snps,dw-wdt";

		reg = <0xffd02000 0x1000>;

		interrupts = <0 171 4>;

		clocks = <&per_base_clk>;

	};

drivers/watchdog/dw_wdt.c

+10 −0
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/miscdevice.h>

#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/of.h>

#include <linux/pm.h>

#include <linux/platform_device.h>

#include <linux/spinlock.h>
@@ -337,12 +338,21 @@ static int dw_wdt_drv_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_OF

static const struct of_device_id dw_wdt_of_match[] = {

	{ .compatible = "snps,dw-wdt", },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, dw_wdt_of_match);

#endif



static struct platform_driver dw_wdt_driver = {

	.probe		= dw_wdt_drv_probe,

	.remove		= dw_wdt_drv_remove,

	.driver		= {

		.name	= "dw_wdt",

		.owner	= THIS_MODULE,

		.of_match_table = of_match_ptr(dw_wdt_of_match),

		.pm	= &dw_wdt_pm_ops,

	},

};