[ARM] at91: correct value for AT91_RSTC_KEY

- Remove a duplicated define for AT91_RSTC_KEY
- Set AT91_RSTC_KEY to the correct value
- Replace the hardcoded keys in at91sam9620.c and at91sam9261.c
  by AT91_RSTC_KEY

Signed-off-by: Jan Altenberg <jan@linutronix.de>
Acked-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-at91/at91sam9260.c

@@ -259,7 +259,7 @@ static struct at91_gpio_bank at91sam9260_gpio[] = {
 
 static void at91sam9260_reset(void)
 {
-	at91_sys_write(AT91_RSTC_CR, (0xA5 << 24) | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
+	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
 }
 
 

arch/arm/mach-at91/at91sam9261.c

@@ -225,7 +225,7 @@ static struct at91_gpio_bank at91sam9261_gpio[] = {
 
 static void at91sam9261_reset(void)
 {
-	at91_sys_write(AT91_RSTC_CR, (0xA5 << 24) | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
+	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
 }
 
 

include/asm-arm/arch-at91/at91_rstc.h

@@ -17,7 +17,7 @@
 #define		AT91_RSTC_PROCRST	(1 << 0)		/* Processor Reset */
 #define		AT91_RSTC_PERRST	(1 << 2)		/* Peripheral Reset */
 #define		AT91_RSTC_EXTRST	(1 << 3)		/* External Reset */
-#define		AT91_RSTC_KEY		(0xff << 24)		/* KEY Password */
+#define		AT91_RSTC_KEY		(0xa5 << 24)		/* KEY Password */
 
 #define AT91_RSTC_SR		(AT91_RSTC + 0x04)	/* Reset Controller Status Register */
 #define		AT91_RSTC_URSTS		(1 << 0)		/* User Reset Status */
@@ -34,6 +34,5 @@
 #define		AT91_RSTC_URSTEN	(1 << 0)		/* User Reset Enable */
 #define		AT91_RSTC_URSTIEN	(1 << 4)		/* User Reset Interrupt Enable */
 #define		AT91_RSTC_ERSTL		(0xf << 8)		/* External Reset Length */
-#define		AT91_RSTC_KEY		(0xff << 24)		/* KEY Password */
 
 #endif