boards: st: steval_stwinbx1: Add BLE support for STEVAL-STWINBX1 board

Provide BLE support for STEVAL-STWINBX1 board.

Signed-off-by: Ali Hozhabri <ali.hozhabri@st.com>

boards/st/steval_stwinbx1/Kconfig.defconfig

@@ -5,6 +5,24 @@
 
 if BOARD_STEVAL_STWINBX1
 
+if BT
+
+config SPI
+	default y
+
+choice BT_HCI_BUS_TYPE
+	default BT_SPI
+endchoice
+
+config BT_BLUENRG_ACI
+	default y
+
+# Disable Flow control
+config BT_HCI_ACL_FLOW_CONTROL
+	default n
+
+endif # BT
+
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI

boards/st/steval_stwinbx1/steval_stwinbx1.dts

@@ -159,6 +159,23 @@ stm32_lp_tick_source: &lptim1 {
 	status = "okay";
 };
 
+&spi3 {
+	pinctrl-0 = <&spi3_sck_pg9 &spi3_miso_pb4 &spi3_mosi_pb5>;
+	pinctrl-names = "default";
+	status = "okay";
+	cs-gpios = <&gpioe 1 GPIO_ACTIVE_LOW>;
+	bluenrg-2@0 {
+		compatible = "st,hci-spi-v2";
+		reg = <0>;
+		reset-gpios = <&gpiod 13 GPIO_ACTIVE_LOW>;
+		irq-gpios = <&gpiof 14 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>;
+		spi-cpha; /* CPHA=1 */
+		spi-hold-cs;
+		spi-max-frequency = <DT_FREQ_M(1)>;
+		reset-assert-duration-ms = <6>;
+	};
+};
+
 &i2c2 {
 	pinctrl-0 = <&i2c2_scl_ph4 &i2c2_sda_pf0>;
 	pinctrl-names = "default";

boards/st/steval_stwinbx1/steval_stwinbx1.yaml

@@ -12,4 +12,5 @@ supported:
   - gpio
   - pwm
   - watchdog
+  - ble
 vendor: st