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: Wim Van Sebroeck <wim@iguana.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/watchdog/coh901327_wdt.c b/drivers/watchdog/coh901327_wdt.c
index b9b8a8be6f12..4bd070f524e5 100644
--- a/drivers/watchdog/coh901327_wdt.c
+++ b/drivers/watchdog/coh901327_wdt.c
@@ -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,