[nrf noup] dts: Select SoftDevice Controller DTS binding as default

The SoftDevice Controller is a different controller than the open
source link layer with a different set of quirks. The SoftDevice
Controller is a default BT controller in nRF Connect SDK context,
therefore it should be enabled by default instead of open source
link layer.

The commit changes the default BT controller for nRF54lm20a SoC.

Signed-off-by: Piotr Pryga <[email protected]>

Author: ppryga-nordic

boards/nordic/nrf54lm20dk/nrf54lm20a_cpuapp_common.dtsi

@@ -18,7 +18,6 @@
 		zephyr,bt-c2h-uart = &uart20;
 		zephyr,flash-controller = &rram_controller;
 		zephyr,flash = &cpuapp_rram;
-		zephyr,bt-hci = &bt_hci_controller;
 		zephyr,ieee802154 = &ieee802154;
 	};
 };
@@ -131,10 +130,6 @@
 	status = "okay";
 };
 
-&bt_hci_controller {
-	status = "okay";
-};
-
 &ieee802154 {
 	status = "okay";
 };

boards/nordic/nrf54lm20dk/nrf54lm20dk_nrf54lm20a_cpuapp.dts

@@ -18,9 +18,5 @@
 	};
 };
 
-&bt_hci_controller {
-	status = "okay";
-};
-
 /* Get a node label for wi-fi spi to use in shield files */
 wifi_spi: &spi22 {};

dts/arm/nordic/nrf54lm20a_enga_cpuapp.dtsi

@@ -17,6 +17,7 @@ nvic: &cpuapp_nvic {};
 
 / {
 	chosen {
+		zephyr,bt-hci = &bt_hci_sdc;
 		zephyr,entropy = &rng;
 	};
 
@@ -37,6 +38,10 @@ nvic: &cpuapp_nvic {};
 	};
 };
 
+&bt_hci_sdc {
+	status = "okay";
+};
+
 &cpuflpr_vpr {
 	cpuapp_vevif_rx: mailbox@1 {
 		compatible = "nordic,nrf-vevif-event-rx";

dts/vendor/nordic/nrf54lm20a.dtsi

@@ -277,6 +277,11 @@
 				/* Note: In the nRF Connect SDK the SoftDevice Controller
 				 * is added and set as the default Bluetooth Controller.
 				 */
+				bt_hci_sdc: bt_hci_sdc {
+					compatible = "nordic,bt-hci-sdc";
+					status = "disabled";
+				};
+
 				bt_hci_controller: bt_hci_controller {
 					compatible = "zephyr,bt-hci-ll-sw-split";
 					status = "disabled";