soc: esp32h2: Add BT support

Add bluetooth support to ESP32-H2.

Signed-off-by: Raffael Rostagno <[email protected]>

Author: Raffael Rostagno

dts/riscv/espressif/esp32h2/esp32h2_common.dtsi

@@ -24,6 +24,7 @@
 		zephyr,canbus = &twai;
 		zephyr,entropy = &trng0;
 		zephyr,flash-controller = &flash;
+		zephyr,bt-hci = &esp32_bt_hci;
 	};
 
 	cpus {
@@ -54,6 +55,11 @@
 		status = "okay";
 	};
 
+	esp32_bt_hci: esp32_bt_hci {
+		compatible = "espressif,esp32-bt-hci";
+		status = "disabled";
+	};
+
 	ieee802154: ieee802154 {
 		compatible = "espressif,esp32-ieee802154";
 		status = "disabled";

soc/espressif/Kconfig

@@ -19,6 +19,9 @@ config ESP_MAC_ADDR_UNIVERSE_ETH
 config ESP_MAC_ADDR_UNIVERSE_BT
 	bool
 
+config ESP_MAC_ADDR_UNIVERSE_IEEE802154
+	bool
+
 config ESP_MAC_UNIVERSAL_MAC_ADDRESSES_ONE
 	bool
 

soc/espressif/esp32h2/Kconfig.mac

@@ -0,0 +1,26 @@
+# Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+if SOC_SERIES_ESP32H2
+
+choice ESP32H2_UNIVERSAL_MAC_ADDRESSES
+	bool "Number of universally administered (by IEEE) MAC address"
+	default ESP32H2_UNIVERSAL_MAC_ADDRESSES_TWO
+	help
+	  Configure the number of universally administered (by IEEE) MAC addresses.
+	  During initialization, MAC addresses for each network interface are generated
+	  or derived from a single base MAC address.
+
+config ESP32H2_UNIVERSAL_MAC_ADDRESSES_TWO
+	bool "Two"
+	select ESP_MAC_UNIVERSAL_MAC_ADDRESSES_TWO
+	select ESP_MAC_ADDR_UNIVERSE_IEEE802154
+	select ESP_MAC_ADDR_UNIVERSE_BT
+
+endchoice # ESP32H2_UNIVERSAL_MAC_ADDRESSES
+
+config ESP32H2_UNIVERSAL_MAC_ADDRESSES
+	int
+	default 2 if ESP32H2_UNIVERSAL_MAC_ADDRESSES_TWO
+
+endif # SOC_SERIES_ESP32H2

soc/espressif/esp32h2/default.ld

@@ -422,6 +422,9 @@ SECTIONS
     *libzephyr.a:esp_cache.*(.literal .literal.* .text .text.*)
     *libzephyr.a:cache_utils.*(.literal .text .literal.* .text.*)
 
+    *libble_app.a:(.high_perf_code_iram1 .high_perf_code_iram1.*)
+    *libble_app.a:(.bt_iram_text .bt_iram_text.*)
+
     . = ALIGN(4) + 16;
   } GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
 
@@ -693,6 +696,18 @@ SECTIONS
     __bss_start = ABSOLUTE(.);
     _bss_start = ABSOLUTE(.);
 
+    . = ALIGN (4);
+    _bt_bss_start = ABSOLUTE(.);
+    *libbtbb.a:(.bss .bss.* COMMON)
+    . = ALIGN (4);
+    _bt_bss_end = ABSOLUTE(.);
+
+    . = ALIGN (4);
+    _bt_controller_bss_start = ABSOLUTE(.);
+    *libble_app.a:(.bss .bss.* COMMON)
+    . = ALIGN (4);
+    _bt_controller_bss_end = ABSOLUTE(.);
+
     *(.dynsbss)
     *(.sbss)
     *(.sbss.*)