diff --git a/components/soc/include/hal/uart_types.h b/components/soc/include/hal/uart_types.h
index c94ecc2833..6d44cf1fee 100644
--- a/components/soc/include/hal/uart_types.h
+++ b/components/soc/include/hal/uart_types.h
@@ -84,6 +84,7 @@ typedef enum {
  * @brief UART signal bit map
  */
 typedef enum {
+    UART_SIGNAL_INV_DISABLE  =  0,            /*!< Disable UART signal inverse*/
     UART_SIGNAL_IRDA_TX_INV  = (0x1 << 0),    /*!< inverse the UART irda_tx signal*/
     UART_SIGNAL_IRDA_RX_INV  = (0x1 << 1),    /*!< inverse the UART irda_rx signal*/
     UART_SIGNAL_RXD_INV      = (0x1 << 2),    /*!< inverse the UART rxd signal*/
diff --git a/components/soc/src/esp32/include/hal/uart_ll.h b/components/soc/src/esp32/include/hal/uart_ll.h
index cafccbb5a6..96a97b1d0f 100644
--- a/components/soc/src/esp32/include/hal/uart_ll.h
+++ b/components/soc/src/esp32/include/hal/uart_ll.h
@@ -795,14 +795,14 @@ static inline void uart_ll_set_loop_back(uart_dev_t *hw, bool loop_back_en)
 static inline void uart_ll_inverse_signal(uart_dev_t *hw, uint32_t inv_mask)
 {
     typeof(hw->conf0) conf0_reg = hw->conf0;
-    conf0_reg.irda_tx_inv |= (inv_mask & UART_SIGNAL_IRDA_TX_INV) ? 1 : 0;
-    conf0_reg.irda_rx_inv |= (inv_mask & UART_SIGNAL_IRDA_RX_INV) ? 1 : 0;
-    conf0_reg.rxd_inv |= (inv_mask & UART_SIGNAL_RXD_INV) ? 1 : 0;
-    conf0_reg.cts_inv |= (inv_mask & UART_SIGNAL_CTS_INV) ? 1 : 0;
-    conf0_reg.dsr_inv |= (inv_mask & UART_SIGNAL_DSR_INV) ? 1 : 0;
-    conf0_reg.txd_inv |= (inv_mask & UART_SIGNAL_TXD_INV) ? 1 : 0;
-    conf0_reg.rts_inv |= (inv_mask & UART_SIGNAL_RTS_INV) ? 1 : 0;
-    conf0_reg.dtr_inv |= (inv_mask & UART_SIGNAL_DTR_INV) ? 1 : 0;
+    conf0_reg.irda_tx_inv = (inv_mask & UART_SIGNAL_IRDA_TX_INV) ? 1 : 0;
+    conf0_reg.irda_rx_inv = (inv_mask & UART_SIGNAL_IRDA_RX_INV) ? 1 : 0;
+    conf0_reg.rxd_inv = (inv_mask & UART_SIGNAL_RXD_INV) ? 1 : 0;
+    conf0_reg.cts_inv = (inv_mask & UART_SIGNAL_CTS_INV) ? 1 : 0;
+    conf0_reg.dsr_inv = (inv_mask & UART_SIGNAL_DSR_INV) ? 1 : 0;
+    conf0_reg.txd_inv = (inv_mask & UART_SIGNAL_TXD_INV) ? 1 : 0;
+    conf0_reg.rts_inv = (inv_mask & UART_SIGNAL_RTS_INV) ? 1 : 0;
+    conf0_reg.dtr_inv = (inv_mask & UART_SIGNAL_DTR_INV) ? 1 : 0;
     hw->conf0.val = conf0_reg.val;
 }
 
diff --git a/components/soc/src/esp32s2/include/hal/uart_ll.h b/components/soc/src/esp32s2/include/hal/uart_ll.h
index 7068b926f2..ab42296d1c 100644
--- a/components/soc/src/esp32s2/include/hal/uart_ll.h
+++ b/components/soc/src/esp32s2/include/hal/uart_ll.h
@@ -761,14 +761,14 @@ static inline void uart_ll_set_loop_back(uart_dev_t *hw, bool loop_back_en)
 static inline void uart_ll_inverse_signal(uart_dev_t *hw, uint32_t inv_mask)
 {
     typeof(hw->conf0) conf0_reg = hw->conf0;
-    conf0_reg.irda_tx_inv |= (inv_mask & UART_SIGNAL_IRDA_TX_INV) ? 1 : 0;
-    conf0_reg.irda_rx_inv |= (inv_mask & UART_SIGNAL_IRDA_RX_INV) ? 1 : 0;
-    conf0_reg.rxd_inv |= (inv_mask & UART_SIGNAL_RXD_INV) ? 1 : 0;
-    conf0_reg.cts_inv |= (inv_mask & UART_SIGNAL_CTS_INV) ? 1 : 0;
-    conf0_reg.dsr_inv |= (inv_mask & UART_SIGNAL_DSR_INV) ? 1 : 0;
-    conf0_reg.txd_inv |= (inv_mask & UART_SIGNAL_TXD_INV) ? 1 : 0;
-    conf0_reg.rts_inv |= (inv_mask & UART_SIGNAL_RTS_INV) ? 1 : 0;
-    conf0_reg.dtr_inv |= (inv_mask & UART_SIGNAL_DTR_INV) ? 1 : 0;
+    conf0_reg.irda_tx_inv = (inv_mask & UART_SIGNAL_IRDA_TX_INV) ? 1 : 0;
+    conf0_reg.irda_rx_inv = (inv_mask & UART_SIGNAL_IRDA_RX_INV) ? 1 : 0;
+    conf0_reg.rxd_inv = (inv_mask & UART_SIGNAL_RXD_INV) ? 1 : 0;
+    conf0_reg.cts_inv = (inv_mask & UART_SIGNAL_CTS_INV) ? 1 : 0;
+    conf0_reg.dsr_inv = (inv_mask & UART_SIGNAL_DSR_INV) ? 1 : 0;
+    conf0_reg.txd_inv = (inv_mask & UART_SIGNAL_TXD_INV) ? 1 : 0;
+    conf0_reg.rts_inv = (inv_mask & UART_SIGNAL_RTS_INV) ? 1 : 0;
+    conf0_reg.dtr_inv = (inv_mask & UART_SIGNAL_DTR_INV) ? 1 : 0;
     hw->conf0.val = conf0_reg.val;
 }