[ARM] Kirkwood: Add the watchdog timer as a platform device.

The Kirkwood architecture uses the same watchdog device as the Orion
architecture. This patch adds orion5x_wdt as a platform device for
Kirkwood.

Signed-off-by: Thomas Reitmayr <treitmayr@devbase.at>
Tested-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>

2 files changed, 28 insertions, 0 deletions

diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index d127731f47dc..a053184bdee5 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -30,6 +30,7 @@
 #include <plat/mvsdio.h>
 #include <plat/mv_xor.h>
 #include <plat/orion_nand.h>
+#include <plat/orion5x_wdt.h>
 #include <plat/time.h>
 #include "common.h"
 
@@ -768,6 +769,29 @@ static void __init kirkwood_xor1_init(void)
 
 
 /*****************************************************************************
+ * Watchdog
+ ****************************************************************************/
+static struct orion5x_wdt_platform_data kirkwood_wdt_data = {
+        .tclk           = 0,
+};
+
+static struct platform_device kirkwood_wdt_device = {
+        .name           = "orion5x_wdt",
+        .id             = -1,
+        .dev            = {
+                .platform_data  = &kirkwood_wdt_data,
+        },
+        .num_resources  = 0,
+};
+
+static void __init kirkwood_wdt_init(void)
+{
+        kirkwood_wdt_data.tclk = kirkwood_tclk;
+        platform_device_register(&kirkwood_wdt_device);
+}
+
+
+/*****************************************************************************
  * Time handling
  ****************************************************************************/
 int kirkwood_tclk;
@@ -859,6 +883,7 @@ void __init kirkwood_init(void)
 
         /* internal devices that every board has */
         kirkwood_rtc_init();
+        kirkwood_wdt_init();
         kirkwood_xor0_init();
         kirkwood_xor1_init();
 }
diff --git a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h
index 00d96abb718c..9e80d9232c83 100644
--- a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h
+++ b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h
@@ -17,12 +17,15 @@
 #define CPU_RESET               0x00000002
 
 #define RSTOUTn_MASK            (BRIDGE_VIRT_BASE | 0x0108)
+#define WDT_RESET_OUT_EN        0x00000002
 #define SOFT_RESET_OUT_EN       0x00000004
 
 #define SYSTEM_SOFT_RESET       (BRIDGE_VIRT_BASE | 0x010c)
 #define SOFT_RESET              0x00000001
 
 #define BRIDGE_CAUSE            (BRIDGE_VIRT_BASE | 0x0110)
+#define WDT_INT_REQ             0x0008
+
 #define BRIDGE_MASK             (BRIDGE_VIRT_BASE | 0x0114)
 #define BRIDGE_INT_TIMER0       0x0002
 #define BRIDGE_INT_TIMER1       0x0004