Alice Guo 3cacd1b180 watchdog: ulp_wdog: Use driver model for reset_cpu() ...

Replace hardcoded WDOG_BASE_ADDR with driver model based dynamic address
lookup from device tree, allowing reset_cpu() to dynamically locate
watchdog devices from device tree.

This change also enables CONFIG_WDT for relevant boards and ensures the
watchdog nodes are available for driver model usage.

- Remove hardcoded WDOG_BASE_ADDR from hw_watchdog_* functions
- Reimplement reset_cpu() using UCLASS_WDT device iteration
- Add ulp_wdt_expire_now() callback for standard WDT interface
- Pass wdog register pointer to hw_watchdog_set_timeout()
- Enable CONFIG_WDT for boards using ULP watchdog
- Remove wdog3 status = "disabled" overrides from U-Boot device tree
  overlays, as the watchdog device needs to be accessible for driver
  model based reset functionality.

Signed-off-by: Alice Guo <alice.guo@nxp.com>
Acked-by: Francesco Dolcini <francesco.dolcini@toradex.com> # Toradex boards
Reviewed-by: Peng Fan <peng.fan@nxp.com>

2026-06-05 08:58:00 -03:00

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