MIPS: ath79: add common watchdog device

All supported SoCs have a built-in hardware watchdog driver. This patch
registers a platform_device for that to make it usable.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1955/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 12 insertions, 0 deletions

diff --git a/arch/mips/ath79/dev-common.c b/arch/mips/ath79/dev-common.c
index 3cfa10065d68..3b82e325bebf 100644
--- a/arch/mips/ath79/dev-common.c
+++ b/arch/mips/ath79/dev-common.c
@@ -65,3 +65,13 @@ void __init ath79_register_uart(void)
         ath79_uart_data[0].uartclk = clk_get_rate(clk);
         platform_device_register(&ath79_uart_device);
 }
+
+static struct platform_device ath79_wdt_device = {
+        .name           = "ath79-wdt",
+        .id             = -1,
+};
+
+void __init ath79_register_wdt(void)
+{
+        platform_device_register(&ath79_wdt_device);
+}
diff --git a/arch/mips/ath79/dev-common.h b/arch/mips/ath79/dev-common.h
index 248622cc7cd6..0f514e1affce 100644
--- a/arch/mips/ath79/dev-common.h
+++ b/arch/mips/ath79/dev-common.h
@@ -13,5 +13,6 @@
 #define _ATH79_DEV_COMMON_H
 
 void ath79_register_uart(void);
+void ath79_register_wdt(void);
 
 #endif /* _ATH79_DEV_COMMON_H */
diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index 5e5740298709..159b42f106b0 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -186,6 +186,7 @@ static int __init ath79_setup(void)
 {
         ath79_gpio_init();
         ath79_register_uart();
+        ath79_register_wdt();
 
         mips_machine_setup();