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Commit c83c1991 authored by Linus Walleij's avatar Linus Walleij
Browse files

watchdog: coh901327: devicetree support 



This adds support for probing the COH 901 327 watchdog from
the device tree and also adds associated bindings.

Acked-by: default avatarWim Van Sebroeck <wim@iguana.be>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent c023b8b2

Documentation/devicetree/bindings/watchdog/stericsson-coh901327.txt

0 → 100644
+19 −0
Original line number Diff line number Diff line 
ST-Ericsson COH 901 327 Watchdog timer



Required properties:

- compatible: must be "stericsson,coh901327".

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

  region.

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



Optional properties:

- timeout-sec: contains the watchdog timeout in seconds.



Example:



watchdog: watchdog@c0012000 {

	compatible = "stericsson,coh901327";

	reg = <0xc0012000 0x1000>;

	interrupts = <3>;

	timeout-sec = <60>;

};

drivers/watchdog/coh901327_wdt.c

+9 −3
Original line number Diff line number Diff line
@@ -354,9 +354,9 @@ static int __init coh901327_probe(struct platform_device *pdev) 


	clk_disable(clk);



	if (margin < 1 || margin > 327)

		margin = 60;

	coh901327_wdt.timeout = margin;

	ret = watchdog_init_timeout(&coh901327_wdt, margin, &pdev->dev);

	if (ret < 0)

		coh901327_wdt.timeout = 60;



	ret = watchdog_register_device(&coh901327_wdt);

	if (ret == 0)
@@ -441,10 +441,16 @@ void coh901327_watchdog_reset(void) 
	/* Return and await doom */

}



static const struct of_device_id coh901327_dt_match[] = {

	{ .compatible = "stericsson,coh901327" },

	{},

};



static struct platform_driver coh901327_driver = {

	.driver = {

		.owner	= THIS_MODULE,

		.name	= "coh901327_wdog",

		.of_match_table = coh901327_dt_match,

	},

	.remove		= __exit_p(coh901327_remove),

	.suspend	= coh901327_suspend,