[U-Boot] [PATCH V3] imx25: Fix reset

[Matthias Weisser]

This patch fixes the reset command on imx25. The watchdog registers are 16
bits in size and not 32. This patch also adds the service register codes as
constants.

Signed-off-by: Matthias Weisser <weisserm at arcor.de>
---

Changes since V2
  - Using 16 bit constants
  
Changes since V1
  - Corrected whitespace
  - Leaving reset sequence as it originally was

 arch/arm/cpu/arm926ejs/mx25/reset.c       |    8 ++++----
 arch/arm/include/asm/arch-mx25/imx-regs.h |   14 ++++++++------
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/arch/arm/cpu/arm926ejs/mx25/reset.c b/arch/arm/cpu/arm926ejs/mx25/reset.c
index 1e33150..1a43683 100644
--- a/arch/arm/cpu/arm926ejs/mx25/reset.c
+++ b/arch/arm/cpu/arm926ejs/mx25/reset.c
@@ -43,14 +43,14 @@ void reset_cpu (ulong ignored)
 {
 	struct wdog_regs *regs = (struct wdog_regs *)IMX_WDT_BASE;
 	/* Disable watchdog and set Time-Out field to 0 */
-	writel (0x00000000, &regs->wcr);
+	writew(0, &regs->wcr);
 
 	/* Write Service Sequence */
-	writel (0x00005555, &regs->wsr);
-	writel (0x0000AAAA, &regs->wsr);
+	writew(WSR_UNLOCK1, &regs->wsr);
+	writew(WSR_UNLOCK2, &regs->wsr);
 
 	/* Enable watchdog */
-	writel (WCR_WDE, &regs->wcr);
+	writew(WCR_WDE, &regs->wcr);
 
 	while (1) ;
 }
diff --git a/arch/arm/include/asm/arch-mx25/imx-regs.h b/arch/arm/include/asm/arch-mx25/imx-regs.h
index f709bd8..f5a2929 100644
--- a/arch/arm/include/asm/arch-mx25/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx25/imx-regs.h
@@ -108,11 +108,11 @@ struct gpt_regs {
 
 /* Watchdog Timer (WDOG) registers */
 struct wdog_regs {
-	u32 wcr;	/* Control */
-	u32 wsr;	/* Service */
-	u32 wrsr;	/* Reset Status */
-	u32 wicr;	/* Interrupt Control */
-	u32 wmcr;	/* Misc Control */
+	u16 wcr;	/* Control */
+	u16 wsr;	/* Service */
+	u16 wrsr;	/* Reset Status */
+	u16 wicr;	/* Interrupt Control */
+	u16 wmcr;	/* Misc Control */
 };
 
 /* IIM control registers */
@@ -308,7 +308,9 @@ struct iim_regs {
 #define GPT_CTRL_TEN		1		/* Timer enable	*/
 
 /* WDOG enable */
-#define WCR_WDE 0x04
+#define WCR_WDE 		0x04
+#define WSR_UNLOCK1		0x5555
+#define WSR_UNLOCK2		0xAAAA
 
 /* FUSE bank offsets */
 #define IIM0_MAC		0x1a
-- 
1.7.0.4