pm: rt5xx: Enable OS Timer as wakeup source

1. Enable os_timer as a wakeup-source in the board
   dts file.
2. Enable PM_DEVICE when PM is enabled.

Signed-off-by: Mahesh Mahadevan <[email protected]>

Author: mmahadevan108

boards/arm/mimxrt595_evk/Kconfig.defconfig

@@ -69,4 +69,12 @@ endchoice
 
 endif # LVGL
 
+if PM
+# Turn on Device Level Power Management as we wish
+# to reconfigure the FlexSPI pins for power savings
+# when transitioning the SoC to Deep Low Power modes.
+config PM_DEVICE
+	default y
+endif # PM
+
 endif # BOARD_MIMXRT595_EVK

boards/arm/mimxrt595_evk/mimxrt595_evk_cm33.dts

@@ -149,6 +149,7 @@
  */
 &os_timer {
 	status = "okay";
+	wakeup-source;
 };
 
 &rtc {

samples/boards/mimxrt595_evk_cm33/system_off/prj.conf

@@ -1,14 +1,9 @@
 #
-# Copyright 2022, NXP
+# Copyright 2022-2023, NXP
 #
 # SPDX-License-Identifier: Apache-2.0
 #
 CONFIG_PM=y
 
-# Turn on Device Level Power Management as we wish
-# to reconfigure the FlexSPI pins for power savings
-# when transitioning the SoC to Deep Low Power modes.
-CONFIG_PM_DEVICE=y
-
 # Enable the RTC
 CONFIG_COUNTER=y

soc/arm/nxp_imx/rt5xx/Kconfig.defconfig.series

@@ -1,6 +1,6 @@
 # i.MX RT5XX series configuration options
 
-# Copyright (c) 2022, NXP
+# Copyright (c) 2022-2023, NXP
 # SPDX-License-Identifier: Apache-2.0
 
 if SOC_SERIES_IMX_RT5XX
@@ -77,4 +77,4 @@ endif # MBEDTLS
 
 source "soc/arm/nxp_imx/rt5xx/Kconfig.defconfig.mimxrt5*"
 
-endif # SOC_SERIES_MIMXRT6XX
+endif # SOC_SERIES_MIMXRT5XX