LPIT Support on Zephyr

1. Provide counter driver based on lpit driver from NXP mcux-sdk-ng
2. Enable tests/drivers/counter/counter_nxp_lpit_api based on NXP
   mimxrt1180_evk, all channels test pass.

Signed-off-by: Felix Wang <fei.wang_3@nxp.com>

Author: FelixWang47831

drivers/clock_control/clock_control_mcux_ccm_rev2.c

@@ -256,7 +256,25 @@ static int mcux_ccm_get_subsys_rate(const struct device *dev,
 		clock_root = kCLOCK_Root_Bus + instance;
 		break;
 #endif
-
+#ifdef CONFIG_COUNTER_MCUX_LPIT
+#if defined(CONFIG_SOC_SERIES_IMXRT118X)
+	case IMX_CCM_LPIT_CLK:
+		switch (instance) {
+		case 0:
+			clock_root = kCLOCK_Root_Bus_Aon;
+			break;
+		case 1:
+			clock_root = kCLOCK_Root_Bus_Wakeup;
+			break;
+		case 2:
+			clock_root = kCLOCK_Root_Lpit3;
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+#endif
+#endif
 #ifdef CONFIG_ADC_MCUX_LPADC
 	case IMX_CCM_LPADC1_CLK:
 		clock_root = kCLOCK_Root_Adc1 + instance;

drivers/counter/CMakeLists.txt

@@ -33,6 +33,7 @@ zephyr_library_sources_ifdef(CONFIG_COUNTER_MCUX_SNVS           counter_mcux_snv
 zephyr_library_sources_ifdef(CONFIG_COUNTER_MCUX_TPM            counter_mcux_tpm.c)
 zephyr_library_sources_ifdef(CONFIG_COUNTER_XEC                 counter_mchp_xec.c)
 zephyr_library_sources_ifdef(CONFIG_COUNTER_MCUX_LPTMR          counter_mcux_lptmr.c)
+zephyr_library_sources_ifdef(CONFIG_COUNTER_MCUX_LPIT          counter_mcux_lpit.c)
 zephyr_library_sources_ifdef(CONFIG_COUNTER_MAXIM_DS3231        maxim_ds3231.c)
 zephyr_library_sources_ifdef(CONFIG_COUNTER_NATIVE_SIM          counter_native_sim.c)
 zephyr_library_sources_ifdef(CONFIG_USERSPACE                   counter_handlers.c)

drivers/counter/Kconfig

@@ -70,6 +70,8 @@ source "drivers/counter/Kconfig.xec"
 
 source "drivers/counter/Kconfig.mcux_lptmr"
 
+source "drivers/counter/Kconfig.mcux_lpit"
+
 source "drivers/counter/Kconfig.maxim_ds3231"
 
 source "drivers/counter/Kconfig.native_sim"

drivers/counter/Kconfig.mcux_lpit

@@ -0,0 +1,11 @@
+# Copyright 2025 NXP
+# SPDX-License-Identifier: Apache-2.0
+
+# MCUXpresso SDK Low Power Periodic Interrupt Timer (LPIT)
+config COUNTER_MCUX_LPIT
+	bool "NXP LPIT driver"
+	default y
+	depends on DT_HAS_NXP_LPIT_CHANNEL_ENABLED && \
+			DT_HAS_NXP_LPIT_ENABLED
+	help
+	  Enable support for the NXP Low Power Periodic Interrupt Timer (LPIT).