imx3: Add watchdog platform device support

This patch adds support for build-in watchdog device found on
Freescale imx31 and imx35 SoCs.

Signed-off-by: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 20 insertions, 2 deletions

diff --git a/arch/arm/mach-mx3/devices.c b/arch/arm/mach-mx3/devices.c
index 6adb586515ea..f8911154a9fa 100644
--- a/arch/arm/mach-mx3/devices.c
+++ b/arch/arm/mach-mx3/devices.c
@@ -575,11 +575,26 @@ struct platform_device imx_ssi_device1 = {
         .resource = imx_ssi_resources1,
 };
 
-static int mx3_devices_init(void)
+static struct resource imx_wdt_resources[] = {
+        {
+                .flags = IORESOURCE_MEM,
+        },
+};
+
+struct platform_device imx_wdt_device0 = {
+        .name           = "imx-wdt",
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(imx_wdt_resources),
+        .resource       = imx_wdt_resources,
+};
+
+static int __init mx3_devices_init(void)
 {
         if (cpu_is_mx31()) {
                 mxc_nand_resources[0].start = MX31_NFC_BASE_ADDR;
                 mxc_nand_resources[0].end = MX31_NFC_BASE_ADDR + 0xfff;
+                imx_wdt_resources[0].start = MX31_WDOG_BASE_ADDR;
+                imx_wdt_resources[0].end = MX31_WDOG_BASE_ADDR + 0x3fff;
                 mxc_register_device(&mxc_rnga_device, NULL);
         }
         if (cpu_is_mx35()) {
@@ -597,6 +612,8 @@ static int mx3_devices_init(void)
                 imx_ssi_resources0[1].end = MX35_INT_SSI1;
                 imx_ssi_resources1[1].start = MX35_INT_SSI2;
                 imx_ssi_resources1[1].end = MX35_INT_SSI2;
+                imx_wdt_resources[0].start = MX35_WDOG_BASE_ADDR;
+                imx_wdt_resources[0].end = MX35_WDOG_BASE_ADDR + 0x3fff;
         }
 
         return 0;
diff --git a/arch/arm/mach-mx3/devices.h b/arch/arm/mach-mx3/devices.h
index 42cf175eac6b..4f77eb501274 100644
--- a/arch/arm/mach-mx3/devices.h
+++ b/arch/arm/mach-mx3/devices.h
@@ -25,4 +25,5 @@ extern struct platform_device mxc_spi_device1;
 extern struct platform_device mxc_spi_device2;
 extern struct platform_device imx_ssi_device0;
 extern struct platform_device imx_ssi_device1;
-
+extern struct platform_device imx_ssi_device1;
+extern struct platform_device imx_wdt_device0;