feat(ldo): Add ldo support for psram on esp32s31

components/esp_psram/include/esp_private/esp_psram_ldo.h

@@ -0,0 +1,31 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Configuration for PSRAM domain LDO supply initialization
+ */
+typedef struct {
+    uint32_t voltage_mv; /*!< PSRAM supply voltage in mV */
+} esp_psram_power_cfg_t;
+
+/**
+ * @brief Initialize the PSRAM supply (LDO voltage and power switch)
+ *
+ * @param config Configuration for the PSRAM supply
+ */
+void esp_psram_power_init(const esp_psram_power_cfg_t *config);
+
+#ifdef __cplusplus
+}
+#endif