*/
#include <common.h>
+#include <log.h>
#include <watchdog.h>
#include <asm/arch/hardware.h>
#include <asm/io.h>
{
struct omap3_wdt_priv *priv = dev_get_priv(dev);
-/*
- * Somebody just triggered watchdog reset and write to WTGR register
- * is in progress. It is resetting right now, no need to trigger it
- * again
- */
+ /*
+ * Somebody just triggered watchdog reset and write to WTGR register
+ * is in progress. It is resetting right now, no need to trigger it
+ * again
+ */
if ((readl(&priv->regs->wdtwwps)) & WDT_WWPS_PEND_WTGR)
return 0;
priv->wdt_trgr_pattern = ~(priv->wdt_trgr_pattern);
writel(priv->wdt_trgr_pattern, &priv->regs->wdtwtgr);
-/*
- * Don't wait for posted write to complete, i.e. don't check
- * WDT_WWPS_PEND_WTGR bit in WWPS register. There is no writes to
- * WTGR register outside of this func, and if entering it
- * we see WDT_WWPS_PEND_WTGR bit set, it means watchdog reset
- * was just triggered. This prevents us from wasting time in busy
- * polling of WDT_WWPS_PEND_WTGR bit.
- */
+ /*
+ * Don't wait for posted write to complete, i.e. don't check
+ * WDT_WWPS_PEND_WTGR bit in WWPS register. There is no writes to
+ * WTGR register outside of this func, and if entering it
+ * we see WDT_WWPS_PEND_WTGR bit set, it means watchdog reset
+ * was just triggered. This prevents us from wasting time in busy
+ * polling of WDT_WWPS_PEND_WTGR bit.
+ */
return 0;
}
{
struct omap3_wdt_priv *priv = dev_get_priv(dev);
-/* disable watchdog */
+ /* disable watchdog */
writel(0xAAAA, &priv->regs->wdtwspr);
while (readl(&priv->regs->wdtwwps) != 0x0)
;
static int omap3_wdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)
{
struct omap3_wdt_priv *priv = dev_get_priv(dev);
- u32 pre_margin = GET_WLDR_VAL(timeout_ms);
-/*
- * Make sure the watchdog is disabled. This is unfortunately required
- * because writing to various registers with the watchdog running has no
- * effect.
- */
+ u32 pre_margin = GET_WLDR_VAL(timeout_ms / 1000);
+ /*
+ * Make sure the watchdog is disabled. This is unfortunately required
+ * because writing to various registers with the watchdog running has
+ * no effect.
+ */
omap3_wdt_stop(dev);
-/* initialize prescaler */
+ /* initialize prescaler */
while (readl(&priv->regs->wdtwwps) & WDT_WWPS_PEND_WCLR)
;
writel(WDT_WCLR_PRE | (PTV << WDT_WCLR_PTV_OFF), &priv->regs->wdtwclr);
while (readl(&priv->regs->wdtwwps) & WDT_WWPS_PEND_WCLR)
;
-/* just count up at 32 KHz */
+ /* just count up at 32 KHz */
while (readl(&priv->regs->wdtwwps) & WDT_WWPS_PEND_WLDR)
;
writel(pre_margin, &priv->regs->wdtwldr);
while (readl(&priv->regs->wdtwwps) & WDT_WWPS_PEND_WLDR)
;
-/* Sequence to enable the watchdog */
+ /* Sequence to enable the watchdog */
writel(0xBBBB, &priv->regs->wdtwspr);
while ((readl(&priv->regs->wdtwwps)) & WDT_WWPS_PEND_WSPR)
;
while ((readl(&priv->regs->wdtwwps)) & WDT_WWPS_PEND_WSPR)
;
+ /* Trigger the watchdog to actually reload the counter. */
+ while ((readl(&priv->regs->wdtwwps)) & WDT_WWPS_PEND_WTGR)
+ ;
+
+ priv->wdt_trgr_pattern = ~(priv->wdt_trgr_pattern);
+ writel(priv->wdt_trgr_pattern, &priv->regs->wdtwtgr);
+
+ while ((readl(&priv->regs->wdtwwps)) & WDT_WWPS_PEND_WTGR)
+ ;
+
return 0;
}
{
struct omap3_wdt_priv *priv = dev_get_priv(dev);
- priv->regs = (struct wd_timer *)devfdt_get_addr(dev);
+ priv->regs = dev_read_addr_ptr(dev);
if (!priv->regs)
return -EINVAL;