diff --git a/components/esp_phy/esp32h21/include/btbb_retention_reg.h b/components/esp_phy/esp32h21/include/btbb_retention_reg.h
new file mode 100644
index 0000000000..db56329ec1
--- /dev/null
+++ b/components/esp_phy/esp32h21/include/btbb_retention_reg.h
@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// btbb sleep retention reg
+
+#define BB_PART_CNT    3
+#define BB_PART_0_SIZE 128
+#define BB_PART_1_SIZE 67
+#define BB_PART_2_SIZE 63
+#define BB_PART_0_ADDR 0x600a2000
+#define BB_PART_1_ADDR 0x600a2800
+#define BB_PART_2_ADDR 0x600a2c00
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/components/esp_phy/esp32h4/include/btbb_retention_reg.h b/components/esp_phy/esp32h4/include/btbb_retention_reg.h
new file mode 100644
index 0000000000..c15806b17f
--- /dev/null
+++ b/components/esp_phy/esp32h4/include/btbb_retention_reg.h
@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// btbb sleep retention reg
+
+#define BB_PART_CNT    3
+#define BB_PART_0_SIZE 128
+#define BB_PART_1_SIZE 67
+#define BB_PART_2_SIZE 63
+#define BB_PART_0_ADDR 0x600c2000
+#define BB_PART_1_ADDR 0x600c2800
+#define BB_PART_2_ADDR 0x600c2c00
+
+#ifdef __cplusplus
+}
+#endif