watchdog: add JZ4740 watchdog driver

Adds support for the hardware watchdog found in Ingenic's jz4740
System-on-Chip.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

2 files changed, 17 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-jz4740/platform.h b/arch/mips/include/asm/mach-jz4740/platform.h
index 8987a76e9676..564ab81d6cdc 100644
--- a/arch/mips/include/asm/mach-jz4740/platform.h
+++ b/arch/mips/include/asm/mach-jz4740/platform.h
@@ -30,6 +30,7 @@ extern struct platform_device jz4740_i2s_device;
 extern struct platform_device jz4740_pcm_device;
 extern struct platform_device jz4740_codec_device;
 extern struct platform_device jz4740_adc_device;
+extern struct platform_device jz4740_wdt_device;
 
 void jz4740_serial_device_register(void);
 
diff --git a/arch/mips/jz4740/platform.c b/arch/mips/jz4740/platform.c
index 1cc9e544d16b..10929e2bc6d8 100644
--- a/arch/mips/jz4740/platform.c
+++ b/arch/mips/jz4740/platform.c
@@ -289,3 +289,19 @@ void jz4740_serial_device_register(void)
 
         platform_device_register(&jz4740_uart_device);
 }
+
+/* Watchdog */
+static struct resource jz4740_wdt_resources[] = {
+        {
+                .start = JZ4740_WDT_BASE_ADDR,
+                .end   = JZ4740_WDT_BASE_ADDR + 0x10 - 1,
+                .flags = IORESOURCE_MEM,
+        },
+};
+
+struct platform_device jz4740_wdt_device = {
+        .name          = "jz4740-wdt",
+        .id            = -1,
+        .num_resources = ARRAY_SIZE(jz4740_wdt_resources),
+        .resource      = jz4740_wdt_resources,
+};