soc: nxp: mcxw: Add BLE support to MCXW2XX soc

Add configuration for BLE
Add 32KHz Osc clock needed by BLE
Move nxp_nbu.c include to be shared on mcxw7x and mcxw2x

Signed-off-by: Yassine El Aissaoui <[email protected]>

Author: yeaissa

soc/nxp/mcx/CMakeLists.txt

@@ -1,9 +1,13 @@
 #
-# Copyright 2024 NXP
+# Copyright 2024-2025 NXP
 #
 # SPDX-License-Identifier: Apache-2.0
 #
 
 add_subdirectory(${SOC_FAMILY})
 
 zephyr_include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../common)
+
+zephyr_sources_ifdef(CONFIG_NXP_NBU
+  ../common/nxp_nbu.c
+  )

soc/nxp/mcx/mcxw/mcxw2xx/Kconfig.defconfig

@@ -16,4 +16,20 @@ config SYS_CLOCK_HW_CYCLES_PER_SEC
 config FLASH_FILL_BUFFER_SIZE
 	default 512
 
-endif
+if BT
+
+config FPU
+	default y
+
+config BT_BUF_ACL_TX_COUNT
+	default 8
+
+config BT_LONG_WQ_STACK_SIZE
+	default 2048
+
+config MAIN_STACK_SIZE
+	default 2048
+
+endif # BT
+
+endif # SOC_SERIES_MCXW2XX

soc/nxp/mcx/mcxw/mcxw2xx/soc.c

@@ -30,12 +30,25 @@
 
 /* System clock frequency */
 extern uint32_t SystemCoreClock;
+extern void nxp_nbu_init(void);
 
 #define CTIMER_CLOCK_SOURCE(node_id) \
 	TO_CTIMER_CLOCK_SOURCE(DT_CLOCKS_CELL(node_id, name), DT_PROP(node_id, clk_source))
 #define TO_CTIMER_CLOCK_SOURCE(inst, val) TO_CLOCK_ATTACH_ID(inst, val)
 #define TO_CLOCK_ATTACH_ID(inst, val) MUX_A(CM_CTIMERCLKSEL##inst, val)
 #define CTIMER_CLOCK_SETUP(node_id) CLOCK_AttachClk(CTIMER_CLOCK_SOURCE(node_id));
+/** 32KHz oscillator load in cap setting */
+#define OSC_CAP_IN_SETTING 5
+/** 32KHz oscillator load out cap setting */
+#define OSC_CAP_OUT_SETTING 5
+
+static void configure_32k_osc(void)
+{
+	/* Configure 32KHz xtal caps for use with RDM */
+	POWER_XTAL32K_ConfigureCaps(OSC_CAP_IN_SETTING, OSC_CAP_OUT_SETTING);
+	POWER_PeripheralPowerOn(kPOWERCFG_XTAL32K);
+	CLOCK_Select32kOscClkSrc(kCLOCK_Osc32kClockSrc_XTAL);
+}
 
 /**
  *
@@ -77,6 +90,8 @@ __weak void clock_init(void)
 
 	DT_FOREACH_STATUS_OKAY(nxp_lpc_ctimer, CTIMER_CLOCK_SETUP)
 	DT_FOREACH_STATUS_OKAY(nxp_ctimer_pwm, CTIMER_CLOCK_SETUP)
+
+	configure_32k_osc();
 }
 
 #ifdef CONFIG_SOC_RESET_HOOK
@@ -107,4 +122,8 @@ void soc_early_init_hook(void)
 	/* Turn on PINT device*/
 	PINT_Init(PINT);
 #endif
+
+#ifdef CONFIG_BT
+	nxp_nbu_init();
+#endif
 }

soc/nxp/mcx/mcxw/mcxw2xx/soc.h

@@ -41,4 +41,6 @@
 #define IOCON_PIO_MODE_PULLDOWN 0x10u /*!<@brief Selects pull-down function */
 #define IOCON_PIO_MODE_PULLUP   0x20u /*!<@brief Selects pull-up function */
 
+#define nbu_handler BLE_LL_IRQHandler
+
 #endif /* _SOC__H_ */

soc/nxp/mcx/mcxw/mcxw7xx/CMakeLists.txt

@@ -6,10 +6,6 @@ zephyr_sources(soc.c)
 zephyr_sources_ifdef(CONFIG_SOC_MCXW716C mcxw71_platform_init.S)
 zephyr_sources_ifdef(CONFIG_SOC_MCXW727C mcxw72_platform_init.S)
 
-zephyr_sources_ifdef(CONFIG_NXP_NBU
-  ../../../common/nxp_nbu.c
-  )
-
 zephyr_include_directories(./)
 
 set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")