feat(soc): support esp32s31 lp_aon & rtc_wdt & rtc_timer

components/hal/esp32s31/include/hal/lp_aon_hal.h

@@ -0,0 +1,19 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include "hal/lp_sys_ll.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define lp_aon_hal_inform_wakeup_type(dslp)                     lp_sys_ll_inform_wakeup_type(dslp)
+
+#ifdef __cplusplus
+}
+#endif

components/hal/esp32s31/include/hal/lp_sys_ll.h

@@ -0,0 +1,66 @@
+/*
+ * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// The LL layer for ESP32-S31 LP_SYS register operations
+
+#pragma once
+
+#include <stdlib.h>
+#include "esp_attr.h"
+#include "soc/soc.h"
+#include "soc/lp_system_struct.h"
+#include "hal/misc.h"
+#include "esp32s31/rom/rtc.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief ROM obtains the wake-up type through LP_SYS_STORE9_REG[0].
+ *         Set the flag to inform
+ * @param true: deepsleep      false: lightsleep
+ */
+FORCE_INLINE_ATTR void lp_sys_ll_inform_wakeup_type(bool dslp)
+{
+    if (dslp) {
+        REG_SET_BIT(RTC_SLEEP_MODE_REG, BIT(0));    /* Tell rom to run deep sleep wake stub */
+
+    } else {
+        REG_CLR_BIT(RTC_SLEEP_MODE_REG, BIT(0));    /* Tell rom to run light sleep wake stub */
+    }
+}
+
+FORCE_INLINE_ATTR void lp_sys_ll_set_pau_aon_bypass(bool bypass)
+{
+    LP_SYS.backup_dma_cfg1.aon_bypass = bypass ? 1 : 0;
+}
+
+FORCE_INLINE_ATTR void lp_sys_ll_set_pau_link_tout_thres(uint32_t tout)
+{
+    LP_SYS.backup_dma_cfg1.link_wait_tout_thres_aon = tout;
+    LP_SYS.backup_dma_cfg1.link_work_tout_thres_aon = tout;
+}
+
+FORCE_INLINE_ATTR void lp_sys_ll_set_pau_link_backup_tout_thres(uint32_t tout)
+{
+    LP_SYS.backup_dma_cfg0.link_backup_tout_thres_aon = tout;
+}
+
+FORCE_INLINE_ATTR void lp_sys_ll_set_pau_reg_read_interval(uint32_t val)
+{
+    LP_SYS.backup_dma_cfg0.read_interval_aon = val;
+}
+
+FORCE_INLINE_ATTR void lp_sys_ll_set_pau_link_addr(uint32_t addr)
+{
+    LP_SYS.backup_dma_cfg2.link_addr_aon = addr;
+}
+
+#ifdef __cplusplus
+}
+#endif