diff --git a/components/esp_hal_i2s/esp32s31/include/hal/i2s_ll.h b/components/esp_hal_i2s/esp32s31/include/hal/i2s_ll.h
index 08cfd4d51a6..671671bf8b7 100644
--- a/components/esp_hal_i2s/esp32s31/include/hal/i2s_ll.h
+++ b/components/esp_hal_i2s/esp32s31/include/hal/i2s_ll.h
@@ -345,7 +345,7 @@ static inline void i2s_ll_tx_clk_set_src(i2s_dev_t *hw, i2s_clock_src_t src)
         case I2S_CLK_SRC_APLL:
             HP_SYS_CLKRST.i2s0_tx_ctrl0.reg_i2s0_tx_clk_src_sel = 1;
             return;
-        case I2S_CLK_SRC_RTC_FAST:
+        case I2S_CLK_SRC_RC_FAST:
             HP_SYS_CLKRST.i2s0_tx_ctrl0.reg_i2s0_tx_clk_src_sel = 2;
             return;
         case I2S_CLK_SRC_EXTERNAL:
@@ -363,7 +363,7 @@ static inline void i2s_ll_tx_clk_set_src(i2s_dev_t *hw, i2s_clock_src_t src)
         case I2S_CLK_SRC_APLL:
             HP_SYS_CLKRST.i2s1_tx_ctrl0.reg_i2s1_tx_clk_src_sel = 1;
             return;
-        case I2S_CLK_SRC_RTC_FAST:
+        case I2S_CLK_SRC_RC_FAST:
             HP_SYS_CLKRST.i2s1_tx_ctrl0.reg_i2s1_tx_clk_src_sel = 2;
             return;
         case I2S_CLK_SRC_EXTERNAL:
@@ -396,7 +396,7 @@ static inline void i2s_ll_rx_clk_set_src(i2s_dev_t *hw, i2s_clock_src_t src)
         case I2S_CLK_SRC_APLL:
             HP_SYS_CLKRST.i2s0_rx_ctrl0.reg_i2s0_rx_clk_src_sel = 1;
             return;
-        case I2S_CLK_SRC_RTC_FAST:
+        case I2S_CLK_SRC_RC_FAST:
             HP_SYS_CLKRST.i2s0_rx_ctrl0.reg_i2s0_rx_clk_src_sel = 2;
             return;
         case I2S_CLK_SRC_EXTERNAL:
@@ -414,7 +414,7 @@ static inline void i2s_ll_rx_clk_set_src(i2s_dev_t *hw, i2s_clock_src_t src)
         case I2S_CLK_SRC_APLL:
             HP_SYS_CLKRST.i2s1_rx_ctrl0.reg_i2s1_rx_clk_src_sel = 1;
             return;
-        case I2S_CLK_SRC_RTC_FAST:
+        case I2S_CLK_SRC_RC_FAST:
             HP_SYS_CLKRST.i2s1_rx_ctrl0.reg_i2s1_rx_clk_src_sel = 2;
             return;
         case I2S_CLK_SRC_EXTERNAL:
@@ -454,7 +454,7 @@ static inline i2s_clock_src_t i2s_ll_tx_clk_get_src(i2s_dev_t *hw)
     case 1:
         return (i2s_clock_src_t)I2S_CLK_SRC_APLL;
     case 2:
-        return (i2s_clock_src_t)I2S_CLK_SRC_RTC_FAST;
+        return (i2s_clock_src_t)I2S_CLK_SRC_RC_FAST;
     case 3:
         return (i2s_clock_src_t)I2S_CLK_SRC_EXTERNAL;
     default:
@@ -487,7 +487,7 @@ static inline i2s_clock_src_t i2s_ll_rx_clk_get_src(i2s_dev_t *hw)
     case 1:
         return (i2s_clock_src_t)I2S_CLK_SRC_APLL;
     case 2:
-        return (i2s_clock_src_t)I2S_CLK_SRC_RTC_FAST;
+        return (i2s_clock_src_t)I2S_CLK_SRC_RC_FAST;
     case 3:
         return (i2s_clock_src_t)I2S_CLK_SRC_EXTERNAL;
     default:
diff --git a/components/soc/esp32s31/include/soc/Kconfig.soc_caps.in b/components/soc/esp32s31/include/soc/Kconfig.soc_caps.in
index 165a5764ceb..f1f38292132 100644
--- a/components/soc/esp32s31/include/soc/Kconfig.soc_caps.in
+++ b/components/soc/esp32s31/include/soc/Kconfig.soc_caps.in
@@ -1283,7 +1283,7 @@ config SOC_I2S_SUPPORTS_APLL
     bool
     default y
 
-config SOC_I2S_SUPPORTS_RTC_FAST
+config SOC_I2S_SUPPORTS_RC_FAST
     bool
     default y
 
diff --git a/components/soc/esp32s31/include/soc/clk_tree_defs.h b/components/soc/esp32s31/include/soc/clk_tree_defs.h
index 428a2a600e7..570cac1aa38 100644
--- a/components/soc/esp32s31/include/soc/clk_tree_defs.h
+++ b/components/soc/esp32s31/include/soc/clk_tree_defs.h
@@ -482,7 +482,7 @@ typedef enum {
 /**
  * @brief I2S clock source
  */
-#define SOC_I2S_CLKS {SOC_MOD_CLK_XTAL, SOC_MOD_CLK_APLL, SOC_MOD_CLK_RTC_FAST, I2S_CLK_SRC_EXTERNAL}
+#define SOC_I2S_CLKS {SOC_MOD_CLK_XTAL, SOC_MOD_CLK_APLL, SOC_MOD_CLK_RC_FAST, I2S_CLK_SRC_EXTERNAL}
 
 /**
  * @brief I2S clock source enum
@@ -492,7 +492,7 @@ typedef enum {
     I2S_CLK_SRC_DEFAULT = SOC_MOD_CLK_XTAL,                            /*!< Auto select maximum clock source as default source clock */
     I2S_CLK_SRC_XTAL = SOC_MOD_CLK_XTAL,                /*!< Select XTAL as the source clock */
     I2S_CLK_SRC_APLL = SOC_MOD_CLK_APLL,                /*!< Select APLL as the source clock */
-    I2S_CLK_SRC_RTC_FAST = SOC_MOD_CLK_RTC_FAST,        /*!< Select RTC_FAST as the source clock */
+    I2S_CLK_SRC_RC_FAST = SOC_MOD_CLK_RC_FAST,        /*!< Select RC_FAST as the source clock */
     I2S_CLK_SRC_EXTERNAL = -1,                          /*!< Select external clock as source clock */
 } soc_periph_i2s_clk_src_t;
 
diff --git a/components/soc/esp32s31/include/soc/soc_caps.h b/components/soc/esp32s31/include/soc/soc_caps.h
index 9ec5b3248e8..84b0b6b8e36 100644
--- a/components/soc/esp32s31/include/soc/soc_caps.h
+++ b/components/soc/esp32s31/include/soc/soc_caps.h
@@ -525,7 +525,7 @@
 #define SOC_I2S_HW_VERSION_2                 (1)
 #define SOC_I2S_SUPPORTS_ETM                  (1)
 #define SOC_I2S_SUPPORTS_APLL                 (1)
-#define SOC_I2S_SUPPORTS_RTC_FAST             (1)     // Support RTC_FAST as I2S clock source
+#define SOC_I2S_SUPPORTS_RC_FAST             (1)     // Support RC_FAST as I2S clock source
 #define SOC_I2S_SUPPORTS_EXTERNAL             (1)     // Support External clock source
 #define SOC_I2S_SUPPORTS_PCM                  (1)
 #define SOC_I2S_SUPPORTS_PDM                  (1)
diff --git a/docs/en/api-reference/peripherals/i2s.rst b/docs/en/api-reference/peripherals/i2s.rst
index f7b51644b7f..63a8a6f9338 100644
--- a/docs/en/api-reference/peripherals/i2s.rst
+++ b/docs/en/api-reference/peripherals/i2s.rst
@@ -61,7 +61,7 @@ Clock Source
     :SOC_I2S_SUPPORTS_PLL_F96M: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_PLL_96M`: 96 MHz PLL clock.
     :SOC_I2S_SUPPORTS_PLL_F240M: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_PLL_240M`: 240 MHz PLL clock.
     :SOC_I2S_SUPPORTS_APLL: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_APLL`: Audio PLL clock. Its frequency is configurable according to the sample rate, which makes it more precise in high sample rate applications. However, if APLL has been occupied by EMAC or other channels, the APLL frequency cannot be changed, and the driver will try to work under this APLL frequency. If this frequency cannot meet the requirements of I2S, the clock configuration will fail.
-    :SOC_I2S_SUPPORTS_RTC_FAST: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_RTC_FAST`: RTC_FAST clock source.
+    :SOC_I2S_SUPPORTS_RC_FAST: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_RC_FAST`: RC_FAST clock source.
     :SOC_I2S_SUPPORTS_EXTERNAL: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_EXTERNAL`: External clock source.
 
 Clock Terminology
diff --git a/docs/zh_CN/api-reference/peripherals/i2s.rst b/docs/zh_CN/api-reference/peripherals/i2s.rst
index 5a0a0abc172..083672d08e5 100644
--- a/docs/zh_CN/api-reference/peripherals/i2s.rst
+++ b/docs/zh_CN/api-reference/peripherals/i2s.rst
@@ -61,7 +61,7 @@ I2S 时钟
     :SOC_I2S_SUPPORTS_PLL_F96M: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_PLL_96M`：96 MHz PLL 时钟。
     :SOC_I2S_SUPPORTS_PLL_F240M: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_PLL_240M`：240 MHz PLL 时钟。
     :SOC_I2S_SUPPORTS_APLL: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_APLL`：音频 PLL 时钟。其频率可根据采样率进行配置，在高采样率应用中精度更高。但如果 APLL 已经被 EMAC 或其他通道占用，则无法更改 APLL 频率，驱动程序将尝试在原有 APLL 频率下工作。如果原有 APLL 频率无法满足 I2S 的需求，时钟配置将失败。
-    :SOC_I2S_SUPPORTS_RTC_FAST: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_RTC_FAST`：RTC_FAST 时钟源。
+    :SOC_I2S_SUPPORTS_RC_FAST: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_RC_FAST`：RC_FAST 时钟源。
     :SOC_I2S_SUPPORTS_EXTERNAL: - :cpp:enumerator:`i2s_clock_src_t::I2S_CLK_SRC_EXTERNAL`：外部时钟源。
 
 时钟术语