diff --git a/components/soc/src/esp32/rtc_sleep.c b/components/soc/src/esp32/rtc_sleep.c
index d903dc70ab..9264c5d5e0 100644
--- a/components/soc/src/esp32/rtc_sleep.c
+++ b/components/soc/src/esp32/rtc_sleep.c
@@ -201,6 +201,11 @@ void rtc_sleep_init(rtc_sleep_config_t cfg)
     } else {
         REG_CLR_BIT(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_CK8M_FORCE_PU);
     }
+    //Keep the RTC8M_CLK on in light_sleep mode if the ledc low-speed channel is clocked by RTC8M_CLK.
+    if (!cfg.deep_slp && GET_PERI_REG_MASK(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_DIG_CLK8M_EN_M)) {
+        REG_CLR_BIT(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_CK8M_FORCE_PD);
+        REG_SET_BIT(RTC_CNTL_CLK_CONF_REG, RTC_CNTL_CK8M_FORCE_PU);
+    }
 
     /* enable VDDSDIO control by state machine */
     REG_CLR_BIT(RTC_CNTL_SDIO_CONF_REG, RTC_CNTL_SDIO_FORCE);