diff --git a/components/esp_hw_support/include/esp_private/sleep_retention.h b/components/esp_hw_support/include/esp_private/sleep_retention.h
index d9a4e7f3bbc..fda479cc473 100644
--- a/components/esp_hw_support/include/esp_private/sleep_retention.h
+++ b/components/esp_hw_support/include/esp_private/sleep_retention.h
@@ -17,7 +17,7 @@ extern "C" {
 #include "esp_regdma.h"
 #include "soc/retention_periph_defs.h"
 
-#define SLEEP_RETENTION_MODULE_BITMAP_SZ    ((SLEEP_RETENTION_MODULE_MAX >> 5) + 1)
+#define SLEEP_RETENTION_MODULE_BITMAP_SZ    (((SLEEP_RETENTION_MODULE_MAX - 1) >> 5) + 1)
 
 /**
  * @file sleep_retention.h
diff --git a/components/esp_hw_support/sleep_retention.c b/components/esp_hw_support/sleep_retention.c
index 3d0e0349a1d..87f7e2d51a8 100644
--- a/components/esp_hw_support/sleep_retention.c
+++ b/components/esp_hw_support/sleep_retention.c
@@ -173,7 +173,7 @@ struct module_sleep_retention_context {
 #define SLEEP_RETENTION_REGDMA_LINK_NR_PRIORITIES       (8u)
 #define SLEEP_RETENTION_REGDMA_LINK_HIGHEST_PRIORITY    (0)
 #define SLEEP_RETENTION_REGDMA_LINK_LOWEST_PRIORITY     (SLEEP_RETENTION_REGDMA_LINK_NR_PRIORITIES - 1)
-#define SLEEP_RETENTION_MODULE_INVALID                  ((sleep_retention_module_t)(-1)) /* the final node does not belong to any module */
+#define SLEEP_RETENTION_MODULE_INVALID                  ((sleep_retention_module_t)(SLEEP_RETENTION_MODULE_MAX)) /* the final node does not belong to any module */
     struct {
         sleep_retention_entries_t entries;
         uint32_t entries_bitmap: REGDMA_LINK_ENTRY_NUM;
@@ -250,7 +250,7 @@ typedef struct {
 
     void *final_default;
 
-    struct sleep_retention_module_object instance[SLEEP_RETENTION_MODULE_MAX + 1];
+    struct sleep_retention_module_object instance[SLEEP_RETENTION_MODULE_MAX];
 
 #define EXTRA_LINK_NUM  (REGDMA_LINK_ENTRY_NUM - 1)
 } sleep_retention_t;
@@ -416,7 +416,7 @@ static void * entries_try_create_bonding(const regdma_link_config_t *config, uin
 
 void sleep_retention_dump_modules(FILE *out)
 {
-    for (int i = SLEEP_RETENTION_MODULE_MIN; i <= SLEEP_RETENTION_MODULE_MAX; i++) {
+    for (int i = SLEEP_RETENTION_MODULE_MIN; i < SLEEP_RETENTION_MODULE_MAX; i++) {
         bool inited = sleep_retention_is_module_inited(i);
         bool created = sleep_retention_is_module_created(i);
         bool is_top = is_top_domain_module(i);
@@ -628,13 +628,16 @@ static void entries_do_destroy(sleep_retention_module_t module)
             priority++;
         }
     } while (priority < SLEEP_RETENTION_REGDMA_LINK_NR_PRIORITIES);
-    s_retention.created_modules.bitmap[module >> 5] &= ~BIT(module % 32);
+    /* INVALID == MAX: must not index bitmap with module==MAX (OOB). */
+    if (module < SLEEP_RETENTION_MODULE_MAX) {
+        s_retention.created_modules.bitmap[module >> 5] &= ~BIT(module % 32);
+    }
     _lock_release_recursive(&s_retention.lock);
 }
 
 static void entries_destroy(sleep_retention_module_t module)
 {
-    assert(SLEEP_RETENTION_MODULE_MIN <= module && module <= SLEEP_RETENTION_MODULE_MAX);
+    assert(SLEEP_RETENTION_MODULE_MIN <= module && module <= SLEEP_RETENTION_MODULE_INVALID);
     _lock_acquire_recursive(&s_retention.lock);
     if (!module_runtime_attach(instance(module))) {
         retention_entries_join();
@@ -647,7 +650,7 @@ static void entries_destroy(sleep_retention_module_t module)
 
 static void sleep_retention_entries_destroy(sleep_retention_module_t module)
 {
-    assert(SLEEP_RETENTION_MODULE_MIN <= module && module <= SLEEP_RETENTION_MODULE_MAX);
+    assert(SLEEP_RETENTION_MODULE_MIN <= module && module < SLEEP_RETENTION_MODULE_MAX);
     _lock_acquire_recursive(&s_retention.lock);
     entries_destroy(module);
     uint32_t created_modules = 0;
@@ -800,7 +803,7 @@ esp_err_t sleep_retention_entries_create(const sleep_retention_entries_config_t
     if (priority >= SLEEP_RETENTION_REGDMA_LINK_NR_PRIORITIES) {
         return ESP_ERR_INVALID_ARG;
     }
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return ESP_ERR_INVALID_ARG;
     }
     esp_err_t err = check_and_create_final_default();
@@ -838,7 +841,7 @@ sleep_retention_module_bitmap_t IRAM_ATTR sleep_retention_get_retained_modules(v
 
 bool sleep_retention_is_module_inited(sleep_retention_module_t module)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return false;
     }
     _lock_acquire_recursive(&s_retention.lock);
@@ -849,7 +852,7 @@ bool sleep_retention_is_module_inited(sleep_retention_module_t module)
 
 bool sleep_retention_is_module_created(sleep_retention_module_t module)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return false;
     }
     _lock_acquire_recursive(&s_retention.lock);
@@ -860,7 +863,7 @@ bool sleep_retention_is_module_created(sleep_retention_module_t module)
 
 bool sleep_retention_is_module_attached(sleep_retention_module_t module)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return false;
     }
     _lock_acquire_recursive(&s_retention.lock);
@@ -953,7 +956,7 @@ static esp_err_t module_action_wrapper(sleep_retention_module_t module, int arg,
 
 esp_err_t sleep_retention_module_init(sleep_retention_module_t module, sleep_retention_module_init_param_t *param)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return ESP_ERR_INVALID_ARG;
     }
     if (param == NULL || param->cbs.create.handle == NULL) {
@@ -986,7 +989,7 @@ esp_err_t sleep_retention_module_init(sleep_retention_module_t module, sleep_ret
 
 esp_err_t sleep_retention_module_deinit(sleep_retention_module_t module)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return ESP_ERR_INVALID_ARG;
     }
 
@@ -1017,7 +1020,7 @@ esp_err_t sleep_retention_module_deinit(sleep_retention_module_t module)
 
 static esp_err_t passive_module_allocate(sleep_retention_module_t module)
 {
-    assert(module >= SLEEP_RETENTION_MODULE_MIN && module <= SLEEP_RETENTION_MODULE_MAX);
+    assert(module >= SLEEP_RETENTION_MODULE_MIN && module < SLEEP_RETENTION_MODULE_MAX);
 
     esp_err_t err = ESP_OK;
     _lock_acquire_recursive(&s_retention.lock);
@@ -1038,7 +1041,7 @@ static esp_err_t passive_module_allocate(sleep_retention_module_t module)
 
 esp_err_t sleep_retention_module_allocate(sleep_retention_module_t module)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return ESP_ERR_INVALID_ARG;
     }
 
@@ -1065,7 +1068,7 @@ esp_err_t sleep_retention_module_allocate(sleep_retention_module_t module)
 
 static esp_err_t passive_module_free(sleep_retention_module_t module)
 {
-    assert(module >= SLEEP_RETENTION_MODULE_MIN && module <= SLEEP_RETENTION_MODULE_MAX);
+    assert(module >= SLEEP_RETENTION_MODULE_MIN && module < SLEEP_RETENTION_MODULE_MAX);
 
     esp_err_t err = ESP_OK;
     _lock_acquire_recursive(&s_retention.lock);
@@ -1087,7 +1090,7 @@ static esp_err_t passive_module_free(sleep_retention_module_t module)
 
 esp_err_t sleep_retention_module_free(sleep_retention_module_t module)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return ESP_ERR_INVALID_ARG;
     }
 
@@ -1132,7 +1135,7 @@ static void module_entries_move(sleep_retention_module_t module, struct module_s
 
 static esp_err_t passive_module_attach(sleep_retention_module_t module)
 {
-    assert(module >= SLEEP_RETENTION_MODULE_MIN && module <= SLEEP_RETENTION_MODULE_MAX);
+    assert(module >= SLEEP_RETENTION_MODULE_MIN && module < SLEEP_RETENTION_MODULE_MAX);
 
     esp_err_t err = ESP_OK;
     _lock_acquire_recursive(&s_retention.lock);
@@ -1150,7 +1153,7 @@ static esp_err_t passive_module_attach(sleep_retention_module_t module)
 
 esp_err_t sleep_retention_module_attach(sleep_retention_module_t module)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return ESP_ERR_INVALID_ARG;
     }
 
@@ -1177,7 +1180,7 @@ esp_err_t sleep_retention_module_attach(sleep_retention_module_t module)
 
 static esp_err_t passive_module_detach(sleep_retention_module_t module)
 {
-    assert(module >= SLEEP_RETENTION_MODULE_MIN && module <= SLEEP_RETENTION_MODULE_MAX);
+    assert(module >= SLEEP_RETENTION_MODULE_MIN && module < SLEEP_RETENTION_MODULE_MAX);
 
     esp_err_t err = ESP_OK;
     _lock_acquire_recursive(&s_retention.lock);
@@ -1197,7 +1200,7 @@ static esp_err_t passive_module_detach(sleep_retention_module_t module)
 
 esp_err_t sleep_retention_module_detach(sleep_retention_module_t module)
 {
-    if (module < SLEEP_RETENTION_MODULE_MIN || module > SLEEP_RETENTION_MODULE_MAX) {
+    if (module < SLEEP_RETENTION_MODULE_MIN || module >= SLEEP_RETENTION_MODULE_MAX) {
         return ESP_ERR_INVALID_ARG;
     }
 
diff --git a/components/soc/esp32c5/include/soc/Kconfig.soc_caps.in b/components/soc/esp32c5/include/soc/Kconfig.soc_caps.in
index 8de8f132074..13e8d527fd2 100644
--- a/components/soc/esp32c5/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32c5/include/soc/Kconfig.soc_caps.in
@@ -1467,10 +1467,6 @@ config SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
     bool
     default y
 
-config SOC_PM_RETENTION_MODULE_NUM
-    int
-    default 40
-
 config SOC_PM_FLASH_KEEP_POWER_IN_LSLP
     bool
     default y
diff --git a/components/soc/esp32c5/include/soc/retention_periph_defs.h b/components/soc/esp32c5/include/soc/retention_periph_defs.h
index 70b88570a1c..ce1bfbfe813 100644
--- a/components/soc/esp32c5/include/soc/retention_periph_defs.h
+++ b/components/soc/esp32c5/include/soc/retention_periph_defs.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -57,7 +56,7 @@ typedef enum periph_retention_module {
     SLEEP_RETENTION_MODULE_MODEM_PHY    = 31,
     SLEEP_RETENTION_MODULE_PHY_FE       = 32,
 
-    SLEEP_RETENTION_MODULE_MAX          = SOC_PM_RETENTION_MODULE_NUM - 1
+    SLEEP_RETENTION_MODULE_MAX,
 } periph_retention_module_t;
 
 #define is_top_domain_module(m)     (m <= SLEEP_RETENTION_MODULE_SDM0)
diff --git a/components/soc/esp32c5/include/soc/soc_caps.h b/components/soc/esp32c5/include/soc/soc_caps.h
index 755291265aa..2ace1016d8c 100644
--- a/components/soc/esp32c5/include/soc/soc_caps.h
+++ b/components/soc/esp32c5/include/soc/soc_caps.h
@@ -594,8 +594,6 @@
 
 #define SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED    (1)
 
-#define SOC_PM_RETENTION_MODULE_NUM         (40)
-
 #define SOC_PM_FLASH_KEEP_POWER_IN_LSLP     (1)  /*!<Keep flash on in light sleep to reduce wake latency and current leakage*/
 
 /*-------------------------- CLOCK SUBSYSTEM CAPS ----------------------------------------*/
diff --git a/components/soc/esp32c6/include/soc/Kconfig.soc_caps.in b/components/soc/esp32c6/include/soc/Kconfig.soc_caps.in
index b1fc40a3996..63738c474c0 100644
--- a/components/soc/esp32c6/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32c6/include/soc/Kconfig.soc_caps.in
@@ -1203,10 +1203,6 @@ config SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
     bool
     default y
 
-config SOC_PM_RETENTION_MODULE_NUM
-    int
-    default 32
-
 config SOC_PM_TOP_DEPENDS_ON_RTC_PERIPH
     bool
     default y
diff --git a/components/soc/esp32c6/include/soc/retention_periph_defs.h b/components/soc/esp32c6/include/soc/retention_periph_defs.h
index 134d3500cec..dbf1b90ddef 100644
--- a/components/soc/esp32c6/include/soc/retention_periph_defs.h
+++ b/components/soc/esp32c6/include/soc/retention_periph_defs.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -56,7 +55,7 @@ typedef enum periph_retention_module {
     SLEEP_RETENTION_MODULE_802154_MAC   = 30,
     SLEEP_RETENTION_MODULE_PHY_FE       = 31,
 
-    SLEEP_RETENTION_MODULE_MAX          = SOC_PM_RETENTION_MODULE_NUM - 1
+    SLEEP_RETENTION_MODULE_MAX,
 } periph_retention_module_t;
 
 #define is_top_domain_module(m)     (m <= SLEEP_RETENTION_MODULE_SDM0)
diff --git a/components/soc/esp32c6/include/soc/soc_caps.h b/components/soc/esp32c6/include/soc/soc_caps.h
index 9e14ad1cd28..d28a95dfa03 100644
--- a/components/soc/esp32c6/include/soc/soc_caps.h
+++ b/components/soc/esp32c6/include/soc/soc_caps.h
@@ -493,8 +493,6 @@
 #define SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE  (1)
 #define SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED    (1)
 
-#define SOC_PM_RETENTION_MODULE_NUM         (32)
-
 #define SOC_PM_TOP_DEPENDS_ON_RTC_PERIPH    (1)
 
 /*-------------------------- CLOCK SUBSYSTEM CAPS ----------------------------------------*/
diff --git a/components/soc/esp32c61/include/soc/Kconfig.soc_caps.in b/components/soc/esp32c61/include/soc/Kconfig.soc_caps.in
index eaf89fb890b..4bf134109d2 100644
--- a/components/soc/esp32c61/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32c61/include/soc/Kconfig.soc_caps.in
@@ -1111,10 +1111,6 @@ config SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
     bool
     default y
 
-config SOC_PM_RETENTION_MODULE_NUM
-    int
-    default 32
-
 config SOC_PM_FLASH_KEEP_POWER_IN_LSLP
     bool
     default y
diff --git a/components/soc/esp32c61/include/soc/retention_periph_defs.h b/components/soc/esp32c61/include/soc/retention_periph_defs.h
index 24b0883b775..52e21ae9d8c 100644
--- a/components/soc/esp32c61/include/soc/retention_periph_defs.h
+++ b/components/soc/esp32c61/include/soc/retention_periph_defs.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -49,7 +48,7 @@ typedef enum periph_retention_module {
     SLEEP_RETENTION_MODULE_802154_MAC   = 30,
     SLEEP_RETENTION_MODULE_PHY_FE       = 31,
 
-    SLEEP_RETENTION_MODULE_MAX          = SOC_PM_RETENTION_MODULE_NUM - 1
+    SLEEP_RETENTION_MODULE_MAX,
 } periph_retention_module_t;
 
 #define is_top_domain_module(m)     (m <= SLEEP_RETENTION_MODULE_TEMP_SENSOR)
diff --git a/components/soc/esp32c61/include/soc/soc_caps.h b/components/soc/esp32c61/include/soc/soc_caps.h
index ed31a89265b..f906ca5bd2f 100644
--- a/components/soc/esp32c61/include/soc/soc_caps.h
+++ b/components/soc/esp32c61/include/soc/soc_caps.h
@@ -457,8 +457,6 @@
 #define SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE  (1)
 #define SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED    (1)
 
-#define SOC_PM_RETENTION_MODULE_NUM         (32)
-
 #define SOC_PM_FLASH_KEEP_POWER_IN_LSLP     (1)  /*!<Keep flash on in light sleep to reduce wake latency and current leakage*/
 
 /*-------------------------- CLOCK SUBSYSTEM CAPS ----------------------------------------*/
diff --git a/components/soc/esp32h2/include/soc/Kconfig.soc_caps.in b/components/soc/esp32h2/include/soc/Kconfig.soc_caps.in
index 57d1f665730..7416c3ac3f2 100644
--- a/components/soc/esp32h2/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32h2/include/soc/Kconfig.soc_caps.in
@@ -1139,10 +1139,6 @@ config SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE
     bool
     default y
 
-config SOC_PM_RETENTION_MODULE_NUM
-    int
-    default 32
-
 config SOC_EXT_MEM_CACHE_TAG_IN_CPU_DOMAIN
     bool
     default y
diff --git a/components/soc/esp32h2/include/soc/retention_periph_defs.h b/components/soc/esp32h2/include/soc/retention_periph_defs.h
index d8d21b5d9a0..379bc9f9e25 100644
--- a/components/soc/esp32h2/include/soc/retention_periph_defs.h
+++ b/components/soc/esp32h2/include/soc/retention_periph_defs.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -53,7 +52,7 @@ typedef enum periph_retention_module {
     SLEEP_RETENTION_MODULE_BT_BB        = 29,
     SLEEP_RETENTION_MODULE_802154_MAC   = 30,
 
-    SLEEP_RETENTION_MODULE_MAX          = SOC_PM_RETENTION_MODULE_NUM - 1
+    SLEEP_RETENTION_MODULE_MAX,
 } periph_retention_module_t;
 
 #define is_top_domain_module(m)     ((m) <= SLEEP_RETENTION_MODULE_SDM0)
diff --git a/components/soc/esp32h2/include/soc/soc_caps.h b/components/soc/esp32h2/include/soc/soc_caps.h
index 56ca4055c91..4f678326115 100644
--- a/components/soc/esp32h2/include/soc/soc_caps.h
+++ b/components/soc/esp32h2/include/soc/soc_caps.h
@@ -491,8 +491,6 @@
 
 #define SOC_PM_PAU_REGDMA_UPDATE_CACHE_BEFORE_WAIT_COMPARE  (1)
 
-#define SOC_PM_RETENTION_MODULE_NUM         (32)
-
 #define SOC_EXT_MEM_CACHE_TAG_IN_CPU_DOMAIN        (1)
 #define SOC_PM_CPU_RETENTION_BY_SW                 (1)
 #define SOC_PM_MODEM_RETENTION_BY_REGDMA           (1)
diff --git a/components/soc/esp32h21/include/soc/Kconfig.soc_caps.in b/components/soc/esp32h21/include/soc/Kconfig.soc_caps.in
index 5bb5cae5a46..5ef09b37f2f 100644
--- a/components/soc/esp32h21/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32h21/include/soc/Kconfig.soc_caps.in
@@ -1003,10 +1003,6 @@ config SOC_PM_PAU_LINK_NUM
     int
     default 5
 
-config SOC_PM_RETENTION_MODULE_NUM
-    int
-    default 32
-
 config SOC_PM_PAU_REGDMA_LINK_CONFIGURABLE
     bool
     default y
diff --git a/components/soc/esp32h21/include/soc/retention_periph_defs.h b/components/soc/esp32h21/include/soc/retention_periph_defs.h
index d8d21b5d9a0..379bc9f9e25 100644
--- a/components/soc/esp32h21/include/soc/retention_periph_defs.h
+++ b/components/soc/esp32h21/include/soc/retention_periph_defs.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -53,7 +52,7 @@ typedef enum periph_retention_module {
     SLEEP_RETENTION_MODULE_BT_BB        = 29,
     SLEEP_RETENTION_MODULE_802154_MAC   = 30,
 
-    SLEEP_RETENTION_MODULE_MAX          = SOC_PM_RETENTION_MODULE_NUM - 1
+    SLEEP_RETENTION_MODULE_MAX,
 } periph_retention_module_t;
 
 #define is_top_domain_module(m)     ((m) <= SLEEP_RETENTION_MODULE_SDM0)
diff --git a/components/soc/esp32h21/include/soc/soc_caps.h b/components/soc/esp32h21/include/soc/soc_caps.h
index b496bec041c..f8d8d16e185 100644
--- a/components/soc/esp32h21/include/soc/soc_caps.h
+++ b/components/soc/esp32h21/include/soc/soc_caps.h
@@ -460,7 +460,6 @@
 #define SOC_PM_SUPPORT_VDDSDIO_PD       (1)
 #define SOC_PM_SUPPORT_TOP_PD           (1)
 #define SOC_PM_PAU_LINK_NUM             (5)
-#define SOC_PM_RETENTION_MODULE_NUM     (32)
 #define SOC_PM_PAU_REGDMA_LINK_CONFIGURABLE        (1)
 #define SOC_PM_CPU_RETENTION_BY_SW                 (1)
 #define SOC_PM_MODEM_RETENTION_BY_REGDMA           (1)
diff --git a/components/soc/esp32h4/include/soc/Kconfig.soc_caps.in b/components/soc/esp32h4/include/soc/Kconfig.soc_caps.in
index a51edc810e2..cf2766b2de0 100644
--- a/components/soc/esp32h4/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32h4/include/soc/Kconfig.soc_caps.in
@@ -1227,10 +1227,6 @@ config SOC_PM_PAU_REGDMA_LINK_CONFIGURABLE
     bool
     default y
 
-config SOC_PM_RETENTION_MODULE_NUM
-    int
-    default 64
-
 config SOC_PM_TOP_DEPENDS_ON_RTC_PERIPH
     bool
     default y
diff --git a/components/soc/esp32h4/include/soc/retention_periph_defs.h b/components/soc/esp32h4/include/soc/retention_periph_defs.h
index a1ab02d76e0..b08ce1af922 100644
--- a/components/soc/esp32h4/include/soc/retention_periph_defs.h
+++ b/components/soc/esp32h4/include/soc/retention_periph_defs.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -59,7 +58,7 @@ typedef enum periph_retention_module {
     SLEEP_RETENTION_MODULE_802154_MAC   = 33,
     SLEEP_RETENTION_MODULE_POWER        = 34,
 
-    SLEEP_RETENTION_MODULE_MAX          = SOC_PM_RETENTION_MODULE_NUM - 1
+    SLEEP_RETENTION_MODULE_MAX,
 } periph_retention_module_t;
 
 #define is_top_domain_module(m)     ((m) <= SLEEP_RETENTION_MODULE_ASRC)
diff --git a/components/soc/esp32h4/include/soc/soc_caps.h b/components/soc/esp32h4/include/soc/soc_caps.h
index cd59619a7e0..c0c3289694b 100644
--- a/components/soc/esp32h4/include/soc/soc_caps.h
+++ b/components/soc/esp32h4/include/soc/soc_caps.h
@@ -514,7 +514,6 @@
 
 #define SOC_PM_PAU_LINK_NUM                 (4)
 #define SOC_PM_PAU_REGDMA_LINK_CONFIGURABLE (1)
-#define SOC_PM_RETENTION_MODULE_NUM         (64)
 
 #define SOC_PM_TOP_DEPENDS_ON_RTC_PERIPH    (1) // In ESP32H4, RTC_PERIPH should be pd only together with TOP, otherwise there is some current leak.
 #define SOC_PM_BBPLL_PD_IN_MODEM_STATE      (1)
diff --git a/components/soc/esp32p4/include/soc/Kconfig.soc_caps.in b/components/soc/esp32p4/include/soc/Kconfig.soc_caps.in
index c1e55c84157..ce031e4ebbc 100644
--- a/components/soc/esp32p4/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32p4/include/soc/Kconfig.soc_caps.in
@@ -1827,10 +1827,6 @@ config SOC_SLEEP_TGWDT_STOP_WORKAROUND
     bool
     default y
 
-config SOC_PM_RETENTION_MODULE_NUM
-    int
-    default 64
-
 config SOC_MAIN_POWER_CONTROL_SUPPORTED
     bool
     default y
diff --git a/components/soc/esp32p4/include/soc/retention_periph_defs.h b/components/soc/esp32p4/include/soc/retention_periph_defs.h
index 36a115e42ae..30dc2a53e8f 100644
--- a/components/soc/esp32p4/include/soc/retention_periph_defs.h
+++ b/components/soc/esp32p4/include/soc/retention_periph_defs.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -68,9 +67,9 @@ typedef enum periph_retention_module {
     SLEEP_RETENTION_MODULE_PPA          = 42,
 
     /* PMU REGDMA clock icg */
-    SLEEP_RETENTION_MODULE_CLOCK_ICG    = SOC_PM_RETENTION_MODULE_NUM - 2,
+    SLEEP_RETENTION_MODULE_CLOCK_ICG    = 43,
 
-    SLEEP_RETENTION_MODULE_MAX          = SOC_PM_RETENTION_MODULE_NUM - 1
+    SLEEP_RETENTION_MODULE_MAX,
 } periph_retention_module_t;
 
 #define is_top_domain_module(m)     (((m) <= SLEEP_RETENTION_MODULE_PPA) || ((m) == SLEEP_RETENTION_MODULE_CLOCK_ICG))
diff --git a/components/soc/esp32p4/include/soc/soc_caps.h b/components/soc/esp32p4/include/soc/soc_caps.h
index 048544d8340..c68adf13b4b 100644
--- a/components/soc/esp32p4/include/soc/soc_caps.h
+++ b/components/soc/esp32p4/include/soc/soc_caps.h
@@ -694,8 +694,6 @@
 #define SOC_SLEEP_SYSTIMER_STALL_WORKAROUND 1    //TODO IDF-11381: replace with all xtal field clk gate control
 #define SOC_SLEEP_TGWDT_STOP_WORKAROUND     1    //TODO IDF-11381: replace with all xtal field clk gate control
 
-#define SOC_PM_RETENTION_MODULE_NUM         (64)
-
 #define SOC_MAIN_POWER_CONTROL_SUPPORTED    (1)  /*!<Supports outputting an enable signal to control the power-on and power-off of the main power supply when powered by VBAT.*/
 
 /*-------------------------- CLOCK SUBSYSTEM CAPS ----------------------------------------*/
diff --git a/components/soc/esp32s31/include/soc/Kconfig.soc_caps.in b/components/soc/esp32s31/include/soc/Kconfig.soc_caps.in
index 0ff9a7f497d..3b8ff2faa89 100644
--- a/components/soc/esp32s31/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32s31/include/soc/Kconfig.soc_caps.in
@@ -1611,10 +1611,6 @@ config SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED
     bool
     default y
 
-config SOC_PM_RETENTION_MODULE_NUM
-    int
-    default 64
-
 config SOC_LP_MAILBOX_SUPPORTED
     bool
     default y
diff --git a/components/soc/esp32s31/include/soc/retention_periph_defs.h b/components/soc/esp32s31/include/soc/retention_periph_defs.h
index 3dbc6a61039..411eba8ebb0 100644
--- a/components/soc/esp32s31/include/soc/retention_periph_defs.h
+++ b/components/soc/esp32s31/include/soc/retention_periph_defs.h
@@ -7,7 +7,6 @@
 #pragma once
 
 #include <stdint.h>
-#include "soc_caps.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -82,7 +81,7 @@ typedef enum periph_retention_module {
 
     SLEEP_RETENTION_MODULE_ASRC         = 53,
 
-    SLEEP_RETENTION_MODULE_MAX          = SOC_PM_RETENTION_MODULE_NUM - 1
+    SLEEP_RETENTION_MODULE_MAX,
 } periph_retention_module_t;
 
 #define is_top_domain_module(m)     ((m >= SLEEP_RETENTION_MODULE_CLOCK_SYSTEM) && ((m <= SLEEP_RETENTION_MODULE_PPA)))
diff --git a/components/soc/esp32s31/include/soc/soc_caps.h b/components/soc/esp32s31/include/soc/soc_caps.h
index 170a4d30245..6941792c52a 100644
--- a/components/soc/esp32s31/include/soc/soc_caps.h
+++ b/components/soc/esp32s31/include/soc/soc_caps.h
@@ -608,8 +608,6 @@
  */
 #define SOC_PM_PMU_MIN_SLP_SLOW_CLK_CYCLE_FIXED    (1)
 
-#define SOC_PM_RETENTION_MODULE_NUM         (64)
-
 /*-------------------------- LP_CORE CAPS ------------------------------------*/
 #define SOC_LP_MAILBOX_SUPPORTED                    (1) /*!< LP Core supports LP-mailbox */
 #define SOC_LP_CORE_SUPPORT_ETM                     (1) /*!< LP Core supports ETM wakeup */
diff --git a/components/soc/include/soc/regdma.h b/components/soc/include/soc/regdma.h
index fac17549610..9f7d5d53711 100644
--- a/components/soc/include/soc/regdma.h
+++ b/components/soc/include/soc/regdma.h
@@ -18,6 +18,8 @@ extern "C" {
 
 #if SOC_PAU_SUPPORTED
 
+#include "soc/retention_periph_defs.h"
+
 #define REGDMA_LINK_ENTRY_NUM   (SOC_PM_PAU_LINK_NUM) /* Maximum number of REG DMA linked list entries */
 
 #ifndef ARRAY_SIZE
@@ -192,15 +194,15 @@ typedef struct regdma_link_branch_write_wait_body {
     volatile uint32_t   mask;
 } regdma_link_branch_write_wait_body_t;
 
-ESP_STATIC_ASSERT(REGDMA_LINK_ENTRY_NUM <= 16, "regdma link entry number should equal to and less than 16");
+ESP_STATIC_ASSERT(REGDMA_LINK_ENTRY_NUM < 16, "regdma link entry number must be less than 16 to pack module into stats");
 typedef struct regdma_link_stats {
     volatile uint32_t   ref: REGDMA_LINK_ENTRY_NUM, /* a bitmap, identifies which entry has referenced the current link */
-#if REGDMA_LINK_ENTRY_NUM < 16
-             reserve: 16 - REGDMA_LINK_ENTRY_NUM,
-#endif
+             module: 16 - REGDMA_LINK_ENTRY_NUM, /* module id; width leaves room beside ref within the low 16 bits */
              id: 16; /* REGDMA linked list node unique identifier */
-    volatile int    module; /* a number used to identify the module to which the current node belongs */
 } regdma_link_stats_t;
+ESP_STATIC_ASSERT(sizeof(regdma_link_stats_t) == 4, "regdma_link_stats_t must be 4 bytes");
+ESP_STATIC_ASSERT(SLEEP_RETENTION_MODULE_MAX < (1u << (16 - REGDMA_LINK_ENTRY_NUM)),
+                  "module id exceeds bitfield width");
 
 typedef struct regdma_link_continuous {
     regdma_link_stats_t             stat;