watchdog: at91rm9200: add DT support

Add DT support for at91rm9200_wdt.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt b/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt
new file mode 100644 (file)
index 0000000..d4d86cf
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/atmel-at91rm9200-wdt.txt
@@ -0,0 +1,9 @@
+Atmel AT91RM9200 System Timer Watchdog
+
+Required properties:
+- compatible: must be "atmel,at91sam9260-wdt".
+
+Example:
+       watchdog@fffffd00 {
+               compatible = "atmel,at91rm9200-wdt";
+       };

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 83ac1f7..0374e0e 100644 (file)
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -117,7 +117,7 @@ config ARM_SP805_WATCHDOG
 
 config AT91RM9200_WATCHDOG
        tristate "AT91RM9200 watchdog"
-       depends on ARCH_AT91RM9200
+       depends on ARCH_AT91
        help
          Watchdog timer embedded into AT91RM9200 chips. This will reboot your
          system when the timeout is reached.

diff --git a/drivers/watchdog/at91rm9200_wdt.c b/drivers/watchdog/at91rm9200_wdt.c
index 89831ed..1c75260 100644 (file)
--- a/drivers/watchdog/at91rm9200_wdt.c
+++ b/drivers/watchdog/at91rm9200_wdt.c
@@ -24,6 +24,8 @@
 #include <linux/types.h>
 #include <linux/watchdog.h>
 #include <linux/uaccess.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 #include <mach/at91_st.h>
 
 #define WDT_DEFAULT_TIME       5       /* seconds */
@@ -252,6 +254,12 @@ static int at91wdt_resume(struct platform_device *pdev)
 #define at91wdt_resume NULL
 #endif
 
+static const struct of_device_id at91_wdt_dt_ids[] = {
+       { .compatible = "atmel,at91rm9200-wdt" },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, at91_wdt_dt_ids);
+
 static struct platform_driver at91wdt_driver = {
        .probe          = at91wdt_probe,
        .remove         = at91wdt_remove,
@@ -261,6 +269,7 @@ static struct platform_driver at91wdt_driver = {
        .driver         = {
                .name   = "at91_wdt",
                .owner  = THIS_MODULE,
+               .of_match_table = of_match_ptr(at91_wdt_dt_ids),
        },
 };