From 583f5b4de32f9aa90451065119dd1dcc83654619 Mon Sep 17 00:00:00 2001
From: gaoxu <gaoxu@espressif.com>
Date: Fri, 26 Jun 2026 10:55:15 +0800
Subject: [PATCH] feat(rng): basic rng support on ESP32-H21

---
 .../src/bootloader_random_esp32h21.c           | 18 ++++++++++++++++++
 .../esp32h21/include/soc/Kconfig.soc_caps.in   |  4 ++++
 components/soc/esp32h21/include/soc/soc_caps.h |  2 +-
 3 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 components/bootloader_support/src/bootloader_random_esp32h21.c

diff --git a/components/bootloader_support/src/bootloader_random_esp32h21.c b/components/bootloader_support/src/bootloader_random_esp32h21.c
new file mode 100644
index 00000000000..071ea905cfc
--- /dev/null
+++ b/components/bootloader_support/src/bootloader_random_esp32h21.c
@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "sdkconfig.h"
+#include "bootloader_random.h"
+
+
+void bootloader_random_enable(void)
+{
+
+}
+
+void bootloader_random_disable(void)
+{
+
+}
diff --git a/components/soc/esp32h21/include/soc/Kconfig.soc_caps.in b/components/soc/esp32h21/include/soc/Kconfig.soc_caps.in
index 8e8dce4b523..64dcec968de 100644
--- a/components/soc/esp32h21/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32h21/include/soc/Kconfig.soc_caps.in
@@ -171,6 +171,10 @@ config SOC_SPI_EXTERNAL_NOR_FLASH_SUPPORTED
     bool
     default y
 
+config SOC_RNG_SUPPORTED
+    bool
+    default y
+
 config SOC_MODEM_CLOCK_SUPPORTED
     bool
     default y
diff --git a/components/soc/esp32h21/include/soc/soc_caps.h b/components/soc/esp32h21/include/soc/soc_caps.h
index 5ed34d361de..2311357e61c 100644
--- a/components/soc/esp32h21/include/soc/soc_caps.h
+++ b/components/soc/esp32h21/include/soc/soc_caps.h
@@ -71,7 +71,7 @@
 #define SOC_RTC_WDT_SUPPORTED           1
 #define SOC_SPI_FLASH_SUPPORTED         1
 #define SOC_SPI_EXTERNAL_NOR_FLASH_SUPPORTED    1
-// #define SOC_RNG_SUPPORTED               1    //TODO: [ESP32H21] IDF-11503
+#define SOC_RNG_SUPPORTED               1
 #define SOC_MODEM_CLOCK_SUPPORTED       1
 #define SOC_REGI2C_SUPPORTED           1
 #define SOC_PHY_SUPPORTED               1