drivers: timer: ostimer: Change to use reset API

Use reset API to reset OSTIMER for better portability.
Improve RW610 for this change.

Signed-off-by: Jason Yu <zejiang.yu@nxp.com>

Author: zejiang0jason

drivers/timer/mcux_os_timer.c

@@ -16,6 +16,7 @@
 #include <zephyr/spinlock.h>
 #include <zephyr/drivers/counter.h>
 #include <zephyr/pm/pm.h>
+#include <zephyr/drivers/reset.h>
 #include "fsl_ostimer.h"
 #if !defined(CONFIG_SOC_FAMILY_MCXN) && !defined(CONFIG_SOC_FAMILY_MCXA)
 #include "fsl_power.h"
@@ -142,12 +143,12 @@ static uint32_t mcux_lpc_ostick_set_counter_timeout(int32_t curr_timeout)
 	}
 	counter_running = true;
 
-	if (IS_ENABLED(CONFIG_MCUX_OS_TIMER_PM_POWERED_OFF)) {
-		/* Capture the current timer value for cases where it loses its state
-		 * in low power modes.
-		 */
-		cyc_sys_compensated += OSTIMER_GetCurrentTimerValue(base);
-	}
+#if defined(CONFIG_MCUX_OS_TIMER_PM_POWERED_OFF)
+	/* Capture the current timer value for cases where it loses its state
+	 * in low power modes.
+	 */
+	cyc_sys_compensated += OSTIMER_GetCurrentTimerValue(base);
+#endif /* defined(CONFIG_MCUX_OS_TIMER_PM_POWERED_OFF) */
 
 	return 0;
 }
@@ -179,12 +180,15 @@ static uint32_t mcux_lpc_ostick_compensate_system_timer(void)
 	}
 	slept_time_us = counter_ticks_to_us(counter_dev, slept_time_ticks);
 	cyc_sys_compensated += CYC_PER_US * slept_time_us;
-	if (IS_ENABLED(CONFIG_MCUX_OS_TIMER_PM_POWERED_OFF)) {
-		/* Reset the OS Timer to a known state */
-		RESET_PeripheralReset(kOSEVENT_TIMER_RST_SHIFT_RSTn);
-		/* Reactivate os_timer for cases where it loses its state */
-		OSTIMER_Init(base);
-	}
+
+#if defined(CONFIG_MCUX_OS_TIMER_PM_POWERED_OFF)
+	/* Reset the OS Timer to a known state */
+	const struct reset_dt_spec reset = RESET_DT_SPEC_GET(DT_DRV_INST(0));
+
+	reset_line_toggle_dt(&reset);
+	/* Reactivate os_timer for cases where it loses its state */
+	OSTIMER_Init(base);
+#endif /* defined(CONFIG_MCUX_OS_TIMER_PM_POWERED_OFF) */
 
 	/* Announce the time slept to the kernel*/
 	mcux_lpc_ostick_isr(NULL);

dts/arm/nxp/nxp_rw6xx_common.dtsi

@@ -610,6 +610,7 @@
 		compatible = "nxp,os-timer";
 		reg = <0x13b000 0x1000>;
 		interrupts = <41 0>;
+		resets = <&rstctl1 NXP_SYSCON_RESET(0, 27)>;
 		status = "disabled";
 	};
 

soc/nxp/rw/Kconfig.defconfig

@@ -88,6 +88,11 @@ config COUNTER
 config MCUX_OS_TIMER_PM_POWERED_OFF
 	default y
 
+# When MCUX_OS_TIMER_PM_POWERED_OFF is used, reset function
+# is needed to place OS_TIMER in a known state after power cycling
+config RESET
+	default y if MCUX_OS_TIMER_PM_POWERED_OFF
+
 # PM code that runs from the idle loop has a large
 # footprint. Hence increase the size when PM is enabled.
 config IDLE_STACK_SIZE