* [U-Boot] imx233
[not found] <CAP8r_=BZWOOadLvY4yLp9UJaWTJhKR-x+z9A4yj-LxQde-18NA@mail.gmail.com>
@ 2013-11-23 17:11 ` Marek Vasut
0 siblings, 0 replies; only message in thread
From: Marek Vasut @ 2013-11-23 17:11 UTC (permalink / raw)
To: u-boot
Dear Bojan Bui?,
> Hello,
>
> I found Your email address in UBoot code(checkout from git).
>
> I would like enable watchdog on imx233 procesor in uboot.
>
> I try like this :
>
> struct mxs_rtc_regs *rtc_regs =
> (struct mxs_rtc_regs *)MXS_RTC_BASE;
> writel(RTC_CTRL_WATCHDOGEN, &rtc_regs->hw_rtc_ctrl_set);
> while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_WATCHDOGEN);
>
> but not work. Can You help me ?
CCing the list.
What problem do you observe exactly? "but not work" is not exactly a description
of the symptoms.
Anyway ...
You need to implement proper driver for the WDT, see
drivers/watchdog/imx_watchdog.c . There is a README, see doc/README.watchdog .
You need to implement hw_watchdog_init() and hw_watchdog_reset() , in the
former, you'd start the WDT by programming the HW_RTC_CTRL and HW_RTC_WATCHDOG
registers, in the latter you'd need to update the HW_RTC_WATCHDOG register so
your board won't keep restarting when the counter runs out.
If you implement the WDT, please submit a patch to the U-Boot ML, thanks.
Best regards,
Marek Vasut
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