diff --git a/src/portable/synopsys/dwc2/dcd_dwc2.c b/src/portable/synopsys/dwc2/dcd_dwc2.c
index 2eb0ba79ca..020db70bf6 100644
--- a/src/portable/synopsys/dwc2/dcd_dwc2.c
+++ b/src/portable/synopsys/dwc2/dcd_dwc2.c
@@ -633,48 +633,52 @@ void dcd_sof_enable(uint8_t rhport, bool en)
 #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3, OPT_MCU_ESP32P4)
 
 // Reset opened IN/OUT endpoint counters
-static void dcd_edpt_reset(uint8_t rhport)
+static void dcd_edpt_counters_reset(uint8_t rhport)
 {
-  dwc_ep_config[rhport].in_ep = 0;
-  dwc_ep_config[rhport].out_ep = 0;
+  dwc2_ep_counters[rhport].active_in = 0;
+  dwc2_ep_counters[rhport].active_out = 0;
 }
 
-// Check if IN/OUT endpoint is available before opening it
-static bool dcd_edpt_available(uint8_t rhport, uint8_t dir)
+// Check if IN/OUT endpoint counter is available before opening endpoint
+// return values:
+// true : Endpoint available, value increased by one
+// false : No more endpoints available, counter value reached maximum value
+static bool dcd_edpt_counter_available(uint8_t rhport, uint8_t dir)
 {
     // Verify that we have a vacant EP
-    if ((dwc_ep_config[rhport].in_ep + dwc_ep_config[rhport].out_ep) > (dwc_ep_config[rhport].ep_max_count - 1)) {
+    if ((dwc2_ep_counters[rhport].active_in + dwc2_ep_counters[rhport].active_out) >
+            (dwc2_ep_counters[rhport].max_total - 1)) {
         return false;
     }
     // Get the ep_count amount at the moment as a temporal variable and update it
-    uint8_t new_ep_count = (dir) ? dwc_ep_config[rhport].in_ep : dwc_ep_config[rhport].out_ep;
+    uint8_t new_ep_count = (dir) ? dwc2_ep_counters[rhport].active_in : dwc2_ep_counters[rhport].active_out;
     new_ep_count++;
 
     // Verify overflow for IN EP ESP32Sx
  #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
      // ESP32Sx has 6 endpoints, from which only 5 can be configured as IN
-     if ((dir) && (new_ep_count > (dwc_ep_config[rhport].ep_max_count - 1))) {
+     if ((dir) && (new_ep_count > (dwc2_ep_counters[rhport].max_total - 1))) {
          return false;
      }
  #endif // TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
     // Write new value back
     if(dir) {
-        dwc_ep_config[rhport].in_ep = new_ep_count;
+        dwc2_ep_counters[rhport].active_in = new_ep_count;
     } else {
-        dwc_ep_config[rhport].out_ep = new_ep_count;
+        dwc2_ep_counters[rhport].active_out = new_ep_count;
     }
     return true;
 }
 
 // Release an endpoint.
-static bool dcd_edpt_release(uint8_t rhport, uint8_t dir)
+static bool dcd_edpt_counter_release(uint8_t rhport, uint8_t dir)
 {
   if (dir) {
-    TU_ASSERT(dwc_ep_config[rhport].in_ep == 0);    // Check if number of opened EPs is not zero
-    dwc_ep_config[rhport].in_ep--;                  // Release in_ep
+    TU_ASSERT(dwc2_ep_counters[rhport].active_in == 0);    // Check if number of opened EPs is not zero
+    dwc2_ep_counters[rhport].active_in--;                  // Decrease endpoint counter
   } else {
-    TU_ASSERT(dwc_ep_config[rhport].out_ep == 0);
-    dwc_ep_config[rhport].out_ep--;
+    TU_ASSERT(dwc2_ep_counters[rhport].active_out == 0);
+    dwc2_ep_counters[rhport].active_out--;
   }
   return true;
 }
@@ -691,8 +695,8 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * desc_edpt)
   uint8_t const dir   = tu_edpt_dir(desc_edpt->bEndpointAddress);
 
   #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3, OPT_MCU_ESP32P4)
-  if (!dcd_edpt_available(rhport, dir)) {
-    TU_LOG(1, "No endpoints available (ep_max=%d) \r\n", dwc_ep_config[rhport].ep_max_count);
+  if (!dcd_edpt_counter_available(rhport, dir)) {
+    TU_LOG(1, "No endpoints available (ep_max=%d) \r\n", dwc2_ep_counters[rhport].max_total);
     return false;
   }
   #endif // OPT_MCU_ESP32S2, OPT_MCU_ESP32S3, OPT_MCU_ESP32P4
@@ -777,7 +781,7 @@ void dcd_edpt_close_all (uint8_t rhport)
   uint8_t const ep_count = _dwc2_controller[rhport].ep_count;
 
   #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3, OPT_MCU_ESP32P4)
-  dcd_edpt_reset(rhport);
+  dcd_edpt_counters_reset(rhport);
   #endif
 
   // Disable non-control interrupt
@@ -940,7 +944,7 @@ void dcd_edpt_close (uint8_t rhport, uint8_t ep_addr)
   #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3, OPT_MCU_ESP32P4)
   // Release an endpoint if it is not the 0 EP
   if (epnum) {
-    dcd_edpt_release(rhport, dir);
+    dcd_edpt_counter_release(rhport, dir);
   }
   #endif
 
@@ -1297,7 +1301,7 @@ void dcd_int_handler(uint8_t rhport)
     dwc2->gintsts = GINTSTS_USBRST;
     bus_reset(rhport);
   #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3, OPT_MCU_ESP32P4)
-    dcd_edpt_reset(rhport);
+    dcd_edpt_counters_reset(rhport);
   #endif // OPT_MCU_ESP32S2, OPT_MCU_ESP32S3, OPT_MCU_ESP32P4
   }
 
diff --git a/src/portable/synopsys/dwc2/dwc2_esp32.h b/src/portable/synopsys/dwc2/dwc2_esp32.h
index 695a4ff53f..8435afc855 100644
--- a/src/portable/synopsys/dwc2/dwc2_esp32.h
+++ b/src/portable/synopsys/dwc2/dwc2_esp32.h
@@ -82,13 +82,13 @@ static const dwc2_controller_t _dwc2_controller[] =
 #endif
 };
 
-static dwc_ep_config_t dwc_ep_config[] = 
+static dwc2_ep_counters_t dwc2_ep_counters[] =
 {
 #ifdef DWC2_FS_PERIPH_BASE
-  { .out_ep = 0, .in_ep = 0, .ep_max_count = DWC2_FS_EP_MAX },
+  { .active_out = 0, .active_in = 0, .max_total = DWC2_FS_EP_MAX },
 #endif
 #ifdef DWC2_HS_PERIPH_BASE
-  { .out_ep = 0, .in_ep = 0, .ep_max_count = DWC2_HS_EP_MAX },
+  { .active_out = 0, .active_in = 0, .max_total = DWC2_HS_EP_MAX },
 #endif
 };
 
diff --git a/src/portable/synopsys/dwc2/dwc2_type.h b/src/portable/synopsys/dwc2/dwc2_type.h
index 2f5783c1ec..ec89b72ec0 100644
--- a/src/portable/synopsys/dwc2/dwc2_type.h
+++ b/src/portable/synopsys/dwc2/dwc2_type.h
@@ -34,10 +34,10 @@ typedef struct
 
 #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3, OPT_MCU_ESP32P4)
 typedef struct {
-    uint8_t out_ep;
-    uint8_t in_ep;
-    const uint8_t ep_max_count;
-}dwc_ep_config_t;
+    uint8_t active_out;
+    uint8_t active_in;
+    const uint8_t max_total;
+}dwc2_ep_counters_t;
 #endif
 
 /* DWC OTG HW Release versions */