drivers: bluetooth: hci: rpmsg: use chosen to abstract ipc instance

Added chosen syntax in Device Tree to abstract the IPC device that is
used with the IPC service module in the Bluetooth HCI RPMsg driver.
Ported affected boards to declare this alias.

Signed-off-by: Kamil Piszczek <[email protected]>

Author: kapi-no

boards/arm/nrf5340dk_nrf5340/nrf5340_cpuapp_common.dts

@@ -13,6 +13,7 @@
 		zephyr,uart-mcumgr = &uart0;
 		zephyr,bt-mon-uart = &uart0;
 		zephyr,bt-c2h-uart = &uart0;
+		zephyr,bt-hci-rpmsg-ipc = &ipc0;
 	};
 
 	leds {

boards/arm/nrf5340dk_nrf5340/nrf5340dk_nrf5340_cpunet.dts

@@ -18,6 +18,7 @@
 		zephyr,uart-mcumgr = &uart0;
 		zephyr,bt-mon-uart = &uart0;
 		zephyr,bt-c2h-uart = &uart0;
+		zephyr,bt-hci-rpmsg-ipc = &ipc0;
 		zephyr,sram = &sram1;
 		zephyr,flash = &flash1;
 		zephyr,code-partition = &slot0_partition;

boards/arm/thingy53_nrf5340/thingy53_nrf5340_common.dts

@@ -12,6 +12,7 @@
 		zephyr,uart-mcumgr = &uart0;
 		zephyr,bt-mon-uart = &uart0;
 		zephyr,bt-c2h-uart = &uart0;
+		zephyr,bt-hci-rpmsg-ipc = &ipc0;
 	};
 
 	buttons {

boards/arm/thingy53_nrf5340/thingy53_nrf5340_cpunet.dts

@@ -18,6 +18,7 @@
 		zephyr,uart-mcumgr = &uart0;
 		zephyr,bt-mon-uart = &uart0;
 		zephyr,bt-c2h-uart = &uart0;
+		zephyr,bt-hci-rpmsg-ipc = &ipc0;
 		zephyr,sram = &sram1;
 		zephyr,flash = &flash1;
 		zephyr,code-partition = &slot0_partition;

drivers/bluetooth/hci/rpmsg.c

@@ -283,7 +283,8 @@ static struct ipc_ept_cfg hci_ept_cfg = {
 static int bt_rpmsg_open(void)
 {
 	int err;
-	const struct device *hci_ipc_instance = DEVICE_DT_GET(DT_NODELABEL(ipc0));
+	const struct device *hci_ipc_instance =
+		DEVICE_DT_GET(DT_CHOSEN(zephyr_bt_hci_rpmsg_ipc));
 
 	BT_DBG("");
 

samples/bluetooth/hci_rpmsg/src/main.c

@@ -268,7 +268,8 @@ static struct ipc_ept_cfg hci_ept_cfg = {
 void main(void)
 {
 	int err;
-	const struct device *hci_ipc_instance = DEVICE_DT_GET(DT_NODELABEL(ipc0));
+	const struct device *hci_ipc_instance =
+		DEVICE_DT_GET(DT_CHOSEN(zephyr_bt_hci_rpmsg_ipc));
 
 	/* incoming events and data from the controller */
 	static K_FIFO_DEFINE(rx_queue);