fix(esp_system): limit CPU clock to 160MHz in ESP32-C5 for flash encryption

This reverts commit 7145fc9558752a6532072bb272e94389807eda51.
2025-12-24 02:21:34 +08:00
parent dc3df80c12
commit 08f5f0d66b
2 changed files with 17 additions and 1 deletions
@@ -55,6 +55,16 @@ static void esp_key_mgr_init(void)

 ESP_SYSTEM_INIT_FN(esp_security_init, SECONDARY, BIT(0), 103)
 {
+#if CONFIG_IDF_TARGET_ESP32C5
+    // Check for unsupported configuration: flash encryption with CPU frequency > 160MHz
+    // Manual encrypted flash writes are not stable at higher CPU clock.
+    // Please refer to the ESP32-C5 SoC Errata document for more details.
+    if (efuse_hal_flash_encryption_enabled() && CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ > 160) {
+        ESP_EARLY_LOGE(TAG, "Flash encryption with CPU frequency > 160MHz is not supported. Please reconfigure the CPU frequency.");
+        return ESP_ERR_NOT_SUPPORTED;
+    }
+#endif
+
    esp_crypto_clk_init();
    esp_key_mgr_init();
 #if CONFIG_ESP_CRYPTO_DPA_PROTECTION_AT_STARTUP