diff --git a/components/esp_driver_parlio/linker.lf b/components/esp_driver_parlio/linker.lf
index 9cbf57ed74a..952757a1df5 100644
--- a/components/esp_driver_parlio/linker.lf
+++ b/components/esp_driver_parlio/linker.lf
@@ -15,6 +15,8 @@ entries:
         parlio_rx: parlio_rx_mount_transaction_buffer (noflash)
         parlio_rx: parlio_rx_set_delimiter_config (noflash)
         parlio_rx: parlio_rx_unit_receive_from_isr (noflash)
+        parlio_rx: parlio_rx_unit_trigger_fake_eof (noflash)
+        parlio_common: parlio_sw_retention (noflash)
 
 [mapping:parlio_driver_gdma_link]
 archive: libesp_driver_dma.a
diff --git a/components/esp_driver_parlio/src/parlio_common.c b/components/esp_driver_parlio/src/parlio_common.c
index c923ec444e0..102f2a6f5ce 100644
--- a/components/esp_driver_parlio/src/parlio_common.c
+++ b/components/esp_driver_parlio/src/parlio_common.c
@@ -52,6 +52,10 @@ parlio_group_t *parlio_acquire_group_handle(int group_id)
 #endif // PARLIO_USE_RETENTION_LINK
             // hal layer initialize
             parlio_hal_init(&group->hal);
+#if SOC_PAU_SUPPORTED && SOC_PARLIO_SUPPORT_SLEEP_RETENTION
+            memcpy(group->regs_map, parlio_regs_map, sizeof(group->regs_map));
+            group->regs_cnt = parlio_regs_cnt;
+#endif
             group->dma_align = cache_hal_get_cache_line_size(CACHE_LL_LEVEL_INT_MEM, CACHE_TYPE_DATA);
             group->dma_align = group->dma_align < 4 ? 4 : group->dma_align;
         }
@@ -191,6 +195,27 @@ void parlio_create_retention_module(parlio_group_t *group)
 }
 #endif // PARLIO_USE_RETENTION_LINK
 
+void parlio_sw_retention(parlio_group_t *group, uint32_t *reg_dump, bool save)
+{
+    parlio_hal_context_t *hal = &group->hal;
+    portENTER_CRITICAL_SAFE(&group->spinlock);
+    volatile uint32_t *reg_base_addr = (volatile uint32_t *)hal->regs;
+    int idx = 0;
+    for (int i = 0; i < 4; i++) {
+        for (uint32_t map = group->regs_map[i], offset = 32 * i; map; map >>= 1, offset++) {
+            if (map & 0x01) {
+                if (save) {
+                    reg_dump[idx] = reg_base_addr[offset];
+                } else {
+                    reg_base_addr[offset] = reg_dump[idx];
+                }
+                idx++;
+            }
+        }
+    }
+    portEXIT_CRITICAL_SAFE(&group->spinlock);
+}
+
 #if CONFIG_PARLIO_ENABLE_DEBUG_LOG
 __attribute__((constructor))
 static void parlio_override_default_log_level(void)
diff --git a/components/esp_driver_parlio/src/parlio_priv.h b/components/esp_driver_parlio/src/parlio_priv.h
index be2147f6bd3..d01953f8fac 100644
--- a/components/esp_driver_parlio/src/parlio_priv.h
+++ b/components/esp_driver_parlio/src/parlio_priv.h
@@ -71,6 +71,18 @@
 // Use retention link only when the target supports sleep retention is enabled
 #define PARLIO_USE_RETENTION_LINK  (SOC_PARLIO_SUPPORT_SLEEP_RETENTION && CONFIG_PM_POWER_DOWN_PERIPHERAL_IN_LIGHT_SLEEP)
 
+#if SOC_PARLIO_SUPPORT_SLEEP_RETENTION
+typedef struct {
+    const periph_retention_module_t retention_module;
+    const regdma_entries_config_t *regdma_entry_array;
+    uint32_t array_size;
+} parlio_retention_desc_t;
+
+extern const parlio_retention_desc_t parlio_retention_infos[PARLIO_LL_GET(INST_NUM)];
+extern const uint32_t parlio_regs_map[4];
+extern const uint32_t parlio_regs_cnt;
+#endif // SOC_PARLIO_SUPPORT_SLEEP_RETENTION
+
 #define PARLIO_DMA_DESCRIPTOR_BUFFER_MAX_SIZE 4095
 
 #if defined(SOC_GDMA_TRIG_PERIPH_PARLIO0_BUS) // Parlio uses GDMA
@@ -131,6 +143,8 @@ typedef struct parlio_group_t {
     int                       group_id;     // group ID, index from 0
     portMUX_TYPE              spinlock;     // to protect per-group register level concurrent access
     parlio_hal_context_t      hal;          // hal layer context
+    uint32_t                  regs_map[4];  // register map for software retention
+    uint32_t                  regs_cnt;     // register count for software retention
     uint32_t                  dma_align;    // DMA buffer alignment
     parlio_unit_base_handle_t    tx_units[PARLIO_LL_GET(TX_UNITS_PER_INST)]; // tx unit handles
     parlio_unit_base_handle_t    rx_units[PARLIO_LL_GET(RX_UNITS_PER_INST)]; // rx unit handles
@@ -214,6 +228,15 @@ esp_err_t parlio_register_unit_to_group(parlio_unit_base_handle_t unit);
  */
 void parlio_unregister_unit_from_group(parlio_unit_base_handle_t unit);
 
+/**
+ * @brief Retain the Parallel IO registers by software
+ *
+ * @param[in]  group       The parlio group handle
+ * @param[in]  reg_dump    The register dump buffer
+ * @param[in]  save        If true, save the registers; if false, restore the registers
+ */
+void parlio_sw_retention(parlio_group_t *group, uint32_t *reg_dump, bool save);
+
 #if PARLIO_USE_RETENTION_LINK
 esp_err_t parlio_create_sleep_retention_link_cb(void *arg);
 void parlio_create_retention_module(parlio_group_t *group);
diff --git a/components/esp_driver_parlio/src/parlio_rx.c b/components/esp_driver_parlio/src/parlio_rx.c
index 498554a1b8d..6f2dfa126d1 100644
--- a/components/esp_driver_parlio/src/parlio_rx.c
+++ b/components/esp_driver_parlio/src/parlio_rx.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -376,6 +376,13 @@ static bool parlio_rx_default_desc_done_callback(gdma_channel_handle_t dma_chan,
     /* Get the finished node from the current node */
     void *finished_buffer = gdma_link_get_buffer(rx_unit->dma_link, rx_unit->curr_node_id);
     size_t finished_length = gdma_link_get_length(rx_unit->dma_link, rx_unit->curr_node_id);
+    if (finished_buffer == NULL || finished_length == 0) {
+        ESP_EARLY_LOGW(TAG, "finished buffer is NULL or length is 0");
+        /* Should not happen unless the force EOF is triggered, keep software tracking synchronized */
+        rx_unit->curr_node_id++;
+        rx_unit->curr_node_id %= rx_unit->node_num;
+        return false;
+    }
 #if SOC_CACHE_INTERNAL_MEM_VIA_L1CACHE
     esp_err_t ret = ESP_OK;
     size_t sync_size = finished_length;
@@ -1155,8 +1162,9 @@ esp_err_t parlio_rx_unit_trigger_fake_eof(parlio_rx_unit_handle_t rx_unit, bool
 
     parlio_hal_context_t *hal = &rx_unit->base.group->hal;
     portENTER_CRITICAL_SAFE(&s_rx_spinlock);
-    /* Save the current register values */
-    parl_io_dev_t save_curr_regs = *(parl_io_dev_t *)hal->regs;
+    /* Retain the current register values by the software */
+    uint32_t reg_dump[rx_unit->base.group->regs_cnt];
+    parlio_sw_retention(rx_unit->base.group, reg_dump, true);
     /* Reset the hardware FSM of the parlio module */
     PARLIO_RCC_ATOMIC() {
         parlio_ll_reset_register(rx_unit->base.group->group_id);
@@ -1166,8 +1174,8 @@ esp_err_t parlio_rx_unit_trigger_fake_eof(parlio_rx_unit_handle_t rx_unit, bool
         parlio_ll_rx_set_clock_source(hal->regs, PARLIO_CLK_SRC_DEFAULT);
     }
     portEXIT_CRITICAL_SAFE(&s_rx_spinlock);
-    /* Restore the register values and clock source*/
-    memcpy(hal->regs, &save_curr_regs, sizeof(parl_io_dev_t));
+    /* Restore the register values and clock source */
+    parlio_sw_retention(rx_unit->base.group, reg_dump, false);
     parlio_ll_rx_update_config(hal->regs);
     PARLIO_CLOCK_SRC_ATOMIC() {
         parlio_ll_rx_set_clock_source(hal->regs, rx_unit->clk_src);
diff --git a/components/esp_driver_parlio/test_apps/parlio/main/test_parlio_rx.c b/components/esp_driver_parlio/test_apps/parlio/main/test_parlio_rx.c
index ec2ca9a23a2..8aaa8a4e888 100644
--- a/components/esp_driver_parlio/test_apps/parlio/main/test_parlio_rx.c
+++ b/components/esp_driver_parlio/test_apps/parlio/main/test_parlio_rx.c
@@ -156,31 +156,7 @@ static void pulse_delimiter_sender_task_i2s(void *args)
     }
 }
 
-static void cs_high(spi_transaction_t *trans)
-{
-    gpio_set_level(TEST_VALID_GPIO, 1);
-}
-
-static void cs_low(spi_transaction_t *trans)
-{
-    gpio_set_level(TEST_VALID_GPIO, 0);
-}
-
-#define TEST_SPI_CLK_FREQ   100000
-
-static void connect_signal_internally(uint32_t gpio, uint32_t sigo, uint32_t sigi)
-{
-    gpio_config_t gpio_conf = {
-        .pin_bit_mask = BIT64(gpio),
-        .mode = GPIO_MODE_INPUT_OUTPUT,
-        .intr_type = GPIO_INTR_DISABLE,
-        .pull_down_en = GPIO_PULLDOWN_DISABLE,
-        .pull_up_en = GPIO_PULLUP_DISABLE,
-    };
-    gpio_config(&gpio_conf);
-    esp_rom_gpio_connect_out_signal(gpio, sigo, false, false);
-    esp_rom_gpio_connect_in_signal(gpio, sigi, false);
-}
+#define TEST_SPI_CLK_FREQ   24000000
 
 static void level_delimiter_sender_task_spi(void *args)
 {
@@ -194,43 +170,16 @@ static void level_delimiter_sender_task_spi(void *args)
         .sclk_io_num = TEST_CLK_GPIO,
         .quadwp_io_num = -1,
         .quadhd_io_num = -1,
-        .max_transfer_sz = 2048,
     };
     spi_device_interface_config_t dev_cfg = {
-        .command_bits = 0,
-        .address_bits = 0,
         .clock_speed_hz = TEST_SPI_CLK_FREQ,
-        .mode = 0,
-        .duty_cycle_pos = 128,
-        .spics_io_num = is_large_trans ? -1 : TEST_VALID_GPIO,
+        .spics_io_num = TEST_VALID_GPIO,
         .queue_size = 5,
-        .flags = SPI_DEVICE_HALFDUPLEX | SPI_DEVICE_POSITIVE_CS,
-        .pre_cb = is_large_trans ? NULL : cs_high,
-        .post_cb = is_large_trans ? NULL : cs_low,
     };
     //Initialize the SPI bus and add device
     TEST_ESP_OK(spi_bus_initialize(TEST_SPI_HOST, &bus_cfg, SPI_DMA_CH_AUTO));
     TEST_ESP_OK(spi_bus_add_device(TEST_SPI_HOST, &dev_cfg, &dev_handle));
 
-    // Initialize CS gpio
-    gpio_set_level(TEST_VALID_GPIO, 0);
-    gpio_config_t cs_cfg = {
-        .pin_bit_mask = BIT64(TEST_VALID_GPIO),
-        .mode = GPIO_MODE_OUTPUT,
-    };
-    gpio_config(&cs_cfg);
-
-    // Connect SPI signals to parlio rx signals
-    connect_signal_internally(TEST_CLK_GPIO,
-                              spi_periph_signal[TEST_SPI_HOST].spiclk_out,
-                              soc_parlio_signals[0].rx_units[0].clk_in_sig);
-    connect_signal_internally(TEST_VALID_GPIO,
-                              spi_periph_signal[TEST_SPI_HOST].spics_out[0],
-                              soc_parlio_signals[0].rx_units[0].data_sigs[TEST_VALID_SIG]);
-    connect_signal_internally(TEST_DATA0_GPIO,
-                              spi_periph_signal[TEST_SPI_HOST].spid_out,
-                              soc_parlio_signals[0].rx_units[0].data_sigs[0]);
-
     // Prepare the data the be transmitted
     uint8_t *data = NULL;
     size_t data_size = TEST_EOF_DATA_LEN;
@@ -253,24 +202,38 @@ static void level_delimiter_sender_task_spi(void *args)
         .user = NULL,
     };
 
-    // Transmit data every 1ms, until the main test thread finished receiving
+    // Transmit data every 2ms, until the main test thread finished receiving
     if (is_large_trans) {
         while (!((*task_flags) & TEST_TASK_FINISHED_BIT)) {
+            // Wait for receiver to be ready before starting transmission
             if (!((*task_flags) & TEST_TASK_RECV_READY_BIT)) {
-                gpio_set_level(TEST_VALID_GPIO, 1);
-                for (int i = 0; i < 80; i++) {
-                    TEST_ESP_OK(spi_device_transmit(dev_handle, &t));
-                }
-                gpio_set_level(TEST_VALID_GPIO, 0);
-                *task_flags |= TEST_TASK_DATA_READY_BIT;
+                vTaskDelay(1);
+                continue;
             }
-            vTaskDelay(pdMS_TO_TICKS(1));
+            *task_flags &= ~(TEST_TASK_RECV_READY_BIT);
+            TEST_ESP_OK(spi_device_acquire_bus(dev_handle, portMAX_DELAY));
+            for (int i = 0; i < TEST_TASK_LARGE_TRANS_SIZE;) {
+                if (TEST_TASK_LARGE_TRANS_SIZE - i < data_size) {
+                    t.flags = 0;
+                    t.length = (TEST_TASK_LARGE_TRANS_SIZE - i) * 8;
+                    t.rxlength = 0;
+                } else {
+                    t.flags = SPI_TRANS_CS_KEEP_ACTIVE;
+                    t.length = data_size * 8;
+                    t.rxlength = 0;
+                }
+                TEST_ESP_OK(spi_device_transmit(dev_handle, &t));
+                i += t.length >> 3;
+            }
+            *task_flags |= TEST_TASK_DATA_READY_BIT;
+            spi_device_release_bus(dev_handle);
+            vTaskDelay(pdMS_TO_TICKS(5));
         }
     } else {
         while (!((*task_flags) & TEST_TASK_FINISHED_BIT)) {
             TEST_ESP_OK(spi_device_transmit(dev_handle, &t));
-            vTaskDelay(pdMS_TO_TICKS(1));
             *task_flags |= TEST_TASK_DATA_READY_BIT;
+            vTaskDelay(pdMS_TO_TICKS(2));
         }
     }
 
@@ -352,18 +315,22 @@ static bool test_delimiter(parlio_rx_delimiter_handle_t deli, bool free_running_
     return is_success;
 }
 
-#if CONFIG_IDF_TARGET_ESP32C6   // TODO: IDF-9806 fix the bit shift issue in other target
 // This test case uses level delimiter
 TEST_CASE("parallel_rx_unit_level_delimiter_test_via_spi", "[parlio_rx]")
 {
     parlio_rx_level_delimiter_config_t lvl_deli_cfg = {
         .valid_sig_line_id = TEST_VALID_SIG,
+#if CONFIG_IDF_TARGET_ESP32C6
+        // C6 needs to lag half cycle behind to get the correct data
+        .sample_edge = PARLIO_SAMPLE_EDGE_NEG,
+#else
         .sample_edge = PARLIO_SAMPLE_EDGE_POS,
+#endif
         .bit_pack_order = PARLIO_BIT_PACK_ORDER_MSB,
         .eof_data_len = TEST_EOF_DATA_LEN,
         .timeout_ticks = 0,
         .flags = {
-            .active_low_en = 0,
+            .active_low_en = 1,
         },
     };
     parlio_rx_delimiter_handle_t deli = NULL;
@@ -372,7 +339,6 @@ TEST_CASE("parallel_rx_unit_level_delimiter_test_via_spi", "[parlio_rx]")
     TEST_ESP_OK(parlio_del_rx_delimiter(deli));
     TEST_ASSERT(is_success);
 }
-#endif
 
 // This test case uses pulse delimiter
 TEST_CASE("parallel_rx_unit_pulse_delimiter_test_via_i2s", "[parlio_rx]")
@@ -922,109 +888,3 @@ TEST_CASE("parallel_rx_unit_infinite_transaction_switch_test", "[parlio_rx]")
     free(payload1);
     free(payload2);
 }
-
-/**
- * @brief This ISR is to indicate the SPI transaction finished
- */
-static void test_gpio_neg_edge_intr(void *arg)
-{
-    parlio_rx_unit_handle_t rx_unit = (parlio_rx_unit_handle_t)arg;
-    bool need_yield = false;
-    parlio_rx_unit_trigger_fake_eof(rx_unit, &need_yield);
-    if (need_yield) {
-        portYIELD_FROM_ISR();
-    }
-}
-
-TEST_CASE("parallel_rx_unit_force_trigger_eof_test", "[parlio_rx]")
-{
-    parlio_rx_unit_handle_t rx_unit = NULL;
-
-    parlio_rx_unit_config_t config = TEST_DEFAULT_UNIT_CONFIG(PARLIO_CLK_SRC_EXTERNAL, 1000000);
-    config.flags.free_clk = 0;
-    config.max_recv_size = TEST_TASK_LARGE_TRANS_SIZE;
-    TEST_ESP_OK(parlio_new_rx_unit(&config, &rx_unit));
-
-    parlio_rx_level_delimiter_config_t lvl_deli_cfg = {
-        .valid_sig_line_id = TEST_VALID_SIG,
-        .sample_edge = PARLIO_SAMPLE_EDGE_POS,
-        .bit_pack_order = PARLIO_BIT_PACK_ORDER_MSB,
-        /* Normally the EOF won't be triggered for the level delimiter that eof_data_len larger than 64KB */
-        .eof_data_len = TEST_TASK_LARGE_TRANS_SIZE,
-        .timeout_ticks = 0,
-        .flags = {
-            .active_low_en = 0,
-        },
-    };
-    parlio_rx_delimiter_handle_t deli = NULL;
-    TEST_ESP_OK(parlio_new_rx_level_delimiter(&lvl_deli_cfg, &deli));
-
-    parlio_rx_event_callbacks_t cbs = {
-        .on_receive_done = test_parlio_rx_done_callback,
-    };
-    test_data_t test_data = {
-        .partial_recv_cnt = 0,
-        .recv_done_cnt = 0,
-    };
-    TEST_ESP_OK(parlio_rx_unit_register_event_callbacks(rx_unit, &cbs, &test_data));
-    TEST_ESP_OK(parlio_rx_unit_enable(rx_unit, true));
-
-    TaskHandle_t sender_task;
-    /* The flag to transport finish information between main test thread and the sender thread
-     * Set it as static to make sure it'll be valid in another thread */
-    static uint32_t task_flags = TEST_TASK_LARGE_TRANS_BIT;
-    xTaskCreate(level_delimiter_sender_task_spi, "sender task", 4096, &task_flags, 5, &sender_task);
-
-    parlio_receive_config_t recv_config = {
-        .delimiter = deli,
-        .flags.partial_rx_en = false,
-    };
-    uint8_t *recv_buff = NULL;
-    uint32_t alignment = cache_hal_get_cache_line_size(CACHE_LL_LEVEL_INT_MEM, CACHE_TYPE_DATA);
-    alignment = alignment < 4 ? 4 : alignment;
-    size_t buff_size = ALIGN_UP(TEST_TASK_LARGE_TRANS_SIZE, alignment);
-    recv_buff = heap_caps_aligned_calloc(alignment, 1, buff_size, TEST_PARLIO_DMA_MEM_ALLOC_CAPS);
-    TEST_ASSERT_NOT_NULL(recv_buff);
-
-    gpio_set_intr_type(TEST_VALID_GPIO, GPIO_INTR_NEGEDGE);
-    gpio_install_isr_service(0);
-    gpio_isr_handler_add(TEST_VALID_GPIO, test_gpio_neg_edge_intr, rx_unit);
-    gpio_intr_enable(TEST_VALID_GPIO);
-
-    uint32_t recv_cnt = 3;
-    for (int i = 0; i < recv_cnt; i++) {
-        TEST_ESP_OK(parlio_rx_unit_receive(rx_unit, recv_buff, buff_size, &recv_config));
-        printf("[%d] recv ready\n", i);
-        task_flags |= TEST_TASK_RECV_READY_BIT;
-        while (!task_flags & TEST_TASK_DATA_READY_BIT) {
-            vTaskDelay(1);
-        }
-        task_flags &= ~TEST_TASK_DATA_READY_BIT;
-        printf("[%d] send done\n", i);
-        TEST_ESP_OK(parlio_rx_unit_wait_all_done(rx_unit, 10000));
-        task_flags &= ~TEST_TASK_RECV_READY_BIT;
-        printf("[%d] recv done\n", i);
-    }
-    // Indicate the test finished, no need to send data
-    task_flags |= TEST_TASK_FINISHED_BIT;
-
-    bool is_success = true;
-    is_success &= test_data.recv_done_cnt == recv_cnt;
-
-    gpio_intr_disable(TEST_VALID_GPIO);
-    gpio_isr_handler_remove(TEST_VALID_GPIO);
-    gpio_uninstall_isr_service();
-    // Waiting for the sender task quit
-    while (task_flags) {
-        vTaskDelay(1);
-    }
-    // Delete the sender task
-    vTaskDelete(sender_task);
-    free(recv_buff);
-
-    TEST_ESP_OK(parlio_rx_unit_disable(rx_unit));
-    TEST_ESP_OK(parlio_del_rx_delimiter(deli));
-    TEST_ESP_OK(parlio_del_rx_unit(rx_unit));
-
-    TEST_ASSERT(is_success);
-}
diff --git a/components/esp_hal_parlio/esp32c5/include/hal/parlio_ll.h b/components/esp_hal_parlio/esp32c5/include/hal/parlio_ll.h
index 625682370ce..7c8e66ecbac 100644
--- a/components/esp_hal_parlio/esp32c5/include/hal/parlio_ll.h
+++ b/components/esp_hal_parlio/esp32c5/include/hal/parlio_ll.h
@@ -74,6 +74,7 @@ static inline void parlio_ll_enable_bus_clock(int group_id, bool enable)
  *
  * @param group_id  The group id of the parlio module
  */
+__attribute__((always_inline))
 static inline void parlio_ll_reset_register(int group_id)
 {
     (void)group_id;
@@ -89,6 +90,7 @@ static inline void parlio_ll_reset_register(int group_id)
  * @param dev Parallel IO register base address
  * @param src Clock source
  */
+__attribute__((always_inline))
 static inline void parlio_ll_rx_set_clock_source(parl_io_dev_t *dev, parlio_clock_source_t src)
 {
     (void)dev;
diff --git a/components/esp_hal_parlio/esp32c5/parlio_periph.c b/components/esp_hal_parlio/esp32c5/parlio_periph.c
index 73bd7e51bd2..d82815bd2cd 100644
--- a/components/esp_hal_parlio/esp32c5/parlio_periph.c
+++ b/components/esp_hal_parlio/esp32c5/parlio_periph.c
@@ -57,7 +57,8 @@ const soc_parlio_signal_desc_t soc_parlio_signals[1] = {
 */
 #define PARLIO_RETENTION_REGS_CNT 8
 #define PARLIO_RETENTION_REGS_BASE (DR_REG_PARL_IO_BASE + 0x0)
-static const uint32_t parlio_regs_map[4] = {0x60457, 0x0, 0x0, 0x0};
+const uint32_t parlio_regs_map[4] = {0x60457, 0x0, 0x0, 0x0};
+const uint32_t parlio_regs_cnt = PARLIO_RETENTION_REGS_CNT;
 static const regdma_entries_config_t parlio_regs_retention[] = {
     // backup stage: save configuration registers
     // restore stage: restore the configuration registers
diff --git a/components/esp_hal_parlio/esp32c6/include/hal/parlio_ll.h b/components/esp_hal_parlio/esp32c6/include/hal/parlio_ll.h
index 3d80520b395..9788456bfaf 100644
--- a/components/esp_hal_parlio/esp32c6/include/hal/parlio_ll.h
+++ b/components/esp_hal_parlio/esp32c6/include/hal/parlio_ll.h
@@ -72,6 +72,7 @@ static inline void parlio_ll_enable_bus_clock(int group_id, bool enable)
  *
  * @param group_id  The group id of the parlio module
  */
+__attribute__((always_inline))
 static inline void parlio_ll_reset_register(int group_id)
 {
     (void)group_id;
@@ -87,6 +88,7 @@ static inline void parlio_ll_reset_register(int group_id)
  * @param dev Parallel IO register base address
  * @param src Clock source
  */
+__attribute__((always_inline))
 static inline void parlio_ll_rx_set_clock_source(parl_io_dev_t *dev, parlio_clock_source_t src)
 {
     (void)dev;
diff --git a/components/esp_hal_parlio/esp32c6/parlio_periph.c b/components/esp_hal_parlio/esp32c6/parlio_periph.c
index 182e8b08223..1cf280eb73c 100644
--- a/components/esp_hal_parlio/esp32c6/parlio_periph.c
+++ b/components/esp_hal_parlio/esp32c6/parlio_periph.c
@@ -71,7 +71,8 @@ const soc_parlio_signal_desc_t soc_parlio_signals[1] = {
 */
 #define PARLIO_RETENTION_REGS_CNT 6
 #define PARLIO_RETENTION_REGS_BASE (DR_REG_PARL_IO_BASE + 0x0)
-static const uint32_t parlio_regs_map[4] = {0x2f, 0x0, 0x100, 0x0};
+const uint32_t parlio_regs_map[4] = {0x2f, 0x0, 0x100, 0x0};
+const uint32_t parlio_regs_cnt = PARLIO_RETENTION_REGS_CNT;
 static const regdma_entries_config_t parlio_regs_retention[] = {
     // backup stage: save configuration registers
     // restore stage: restore the configuration registers
diff --git a/components/esp_hal_parlio/esp32h2/include/hal/parlio_ll.h b/components/esp_hal_parlio/esp32h2/include/hal/parlio_ll.h
index 29f6efd1a18..489d2ff42a2 100644
--- a/components/esp_hal_parlio/esp32h2/include/hal/parlio_ll.h
+++ b/components/esp_hal_parlio/esp32h2/include/hal/parlio_ll.h
@@ -76,6 +76,7 @@ static inline void parlio_ll_enable_bus_clock(int group_id, bool enable)
  *
  * @param group_id  The group id of the parlio module
  */
+__attribute__((always_inline))
 static inline void parlio_ll_reset_register(int group_id)
 {
     (void)group_id;
@@ -91,6 +92,7 @@ static inline void parlio_ll_reset_register(int group_id)
  * @param dev Parallel IO register base address
  * @param src Clock source
  */
+__attribute__((always_inline))
 static inline void parlio_ll_rx_set_clock_source(parl_io_dev_t *dev, parlio_clock_source_t src)
 {
     (void)dev;
diff --git a/components/esp_hal_parlio/esp32h2/parlio_periph.c b/components/esp_hal_parlio/esp32h2/parlio_periph.c
index 5d27330c526..1bafc48ce04 100644
--- a/components/esp_hal_parlio/esp32h2/parlio_periph.c
+++ b/components/esp_hal_parlio/esp32h2/parlio_periph.c
@@ -57,7 +57,8 @@ const soc_parlio_signal_desc_t soc_parlio_signals[1] = {
 */
 #define PARLIO_RETENTION_REGS_CNT 8
 #define PARLIO_RETENTION_REGS_BASE (DR_REG_PARL_IO_BASE + 0x0)
-static const uint32_t parlio_regs_map[4] = {0x60457, 0x0, 0x0, 0x0};
+const uint32_t parlio_regs_map[4] = {0x60457, 0x0, 0x0, 0x0};
+const uint32_t parlio_regs_cnt = PARLIO_RETENTION_REGS_CNT;
 static const regdma_entries_config_t parlio_regs_retention[] = {
     // backup stage: save configuration registers
     // restore stage: restore the configuration registers
diff --git a/components/esp_hal_parlio/esp32h4/include/hal/parlio_ll.h b/components/esp_hal_parlio/esp32h4/include/hal/parlio_ll.h
index cda1ef16e7b..0f0a844d456 100644
--- a/components/esp_hal_parlio/esp32h4/include/hal/parlio_ll.h
+++ b/components/esp_hal_parlio/esp32h4/include/hal/parlio_ll.h
@@ -74,6 +74,7 @@ static inline void parlio_ll_enable_bus_clock(int group_id, bool enable)
  *
  * @param group_id  The group id of the parlio module
  */
+__attribute__((always_inline))
 static inline void parlio_ll_reset_register(int group_id)
 {
     (void)group_id;
@@ -89,6 +90,7 @@ static inline void parlio_ll_reset_register(int group_id)
  * @param dev Parallel IO register base address
  * @param src Clock source
  */
+__attribute__((always_inline))
 static inline void parlio_ll_rx_set_clock_source(parl_io_dev_t *dev, parlio_clock_source_t src)
 {
     (void)dev;
diff --git a/components/esp_hal_parlio/esp32h4/parlio_periph.c b/components/esp_hal_parlio/esp32h4/parlio_periph.c
index 91c0b2fa0e9..9f5b22e6447 100644
--- a/components/esp_hal_parlio/esp32h4/parlio_periph.c
+++ b/components/esp_hal_parlio/esp32h4/parlio_periph.c
@@ -57,7 +57,8 @@ const soc_parlio_signal_desc_t soc_parlio_signals[1] = {
 */
 #define PARLIO_RETENTION_REGS_CNT 8
 #define PARLIO_RETENTION_REGS_BASE (DR_REG_PARL_IO_BASE + 0x0)
-static const uint32_t parlio_regs_map[4] = {0x60457, 0x0, 0x0, 0x0};
+const uint32_t parlio_regs_map[4] = {0x60457, 0x0, 0x0, 0x0};
+const uint32_t parlio_regs_cnt = PARLIO_RETENTION_REGS_CNT;
 static const regdma_entries_config_t parlio_regs_retention[] = {
     // backup stage: save configuration registers
     // restore stage: restore the configuration registers
diff --git a/components/esp_hal_parlio/esp32p4/include/hal/parlio_ll.h b/components/esp_hal_parlio/esp32p4/include/hal/parlio_ll.h
index b7d48178258..8130f6ec7bb 100644
--- a/components/esp_hal_parlio/esp32p4/include/hal/parlio_ll.h
+++ b/components/esp_hal_parlio/esp32p4/include/hal/parlio_ll.h
@@ -92,6 +92,7 @@ static inline void _parlio_ll_enable_bus_clock(int group_id, bool enable)
  *
  * @param group_id  The group id of the parlio module
  */
+__attribute__((always_inline))
 static inline void _parlio_ll_reset_register(int group_id)
 {
     (void)group_id;
@@ -114,6 +115,7 @@ static inline void _parlio_ll_reset_register(int group_id)
  * @param dev Parallel IO register base address
  * @param src Clock source
  */
+__attribute__((always_inline))
 static inline void _parlio_ll_rx_set_clock_source(parl_io_dev_t *dev, parlio_clock_source_t src)
 {
     (void)dev;
diff --git a/components/esp_hal_parlio/esp32p4/parlio_periph.c b/components/esp_hal_parlio/esp32p4/parlio_periph.c
index be359819b0f..1c06871312b 100644
--- a/components/esp_hal_parlio/esp32p4/parlio_periph.c
+++ b/components/esp_hal_parlio/esp32p4/parlio_periph.c
@@ -73,7 +73,8 @@ const soc_parlio_signal_desc_t soc_parlio_signals[1] = {
 */
 #define PARLIO_RETENTION_REGS_CNT 8
 #define PARLIO_RETENTION_REGS_BASE (DR_REG_PARL_IO_BASE + 0x0)
-static const uint32_t parlio_regs_map[4] = {0x60457, 0x0, 0x0, 0x0};
+const uint32_t parlio_regs_map[4] = {0x60457, 0x0, 0x0, 0x0};
+const uint32_t parlio_regs_cnt = PARLIO_RETENTION_REGS_CNT;
 static const regdma_entries_config_t parlio_regs_retention[] = {
     // backup stage: save configuration registers
     // restore stage: restore the configuration registers