@@ -2,7 +2,10 @@
* arch/arm/mach-ep93xx/include/mach/system.h
*/
+#include <linux/io.h>
+
#include <mach/hardware.h>
+#include <mach/ts72xx.h>
static inline void arch_idle(void)
{
@@ -14,6 +17,15 @@ static inline void arch_reset(char mode, const char *cmd)
local_irq_disable();
/*
+ * It's more reliable to use CPLD watchdog to perform the reset
+ */
+ if (board_is_ts7200() || board_is_ts7250() || board_is_ts7260() ||
+ board_is_ts7300() || board_is_ts7400()) {
+ __raw_writeb(0x5, TS72XX_WDT_FEED_PHYS_BASE);
+ __raw_writeb(0x1, TS72XX_WDT_CONTROL_PHYS_BASE);
+ }
+
+ /*
* Set then clear the SWRST bit to initiate a software reset
*/
ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_SWRST);
On all ep93xx based boards from Technologic Systems, there's CPLD watchdog available, so use this one to reset the board instead of the soft reset in CPU. I've seen some weird lockups with the soft reset on ep93xx in the past, while the reset via CPLD watchdog seems to be rock solid (tm) and works fine so far. Cc: Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Petr Štetiar <ynezz@true.cz> --- arch/arm/mach-ep93xx/include/mach/system.h | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-)