diff --git a/components/driver/include/driver/ledc.h b/components/driver/include/driver/ledc.h
index fb97c6c011..691379a3d8 100644
--- a/components/driver/include/driver/ledc.h
+++ b/components/driver/include/driver/ledc.h
@@ -253,7 +253,7 @@ int ledc_get_duty(ledc_mode_t speed_mode, ledc_channel_t channel);
  *     - ESP_OK Success
  *     - ESP_ERR_INVALID_ARG Parameter error
  */
-esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty, ledc_duty_direction_t gradule_direction,
+esp_err_t ledc_set_fade(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty, ledc_duty_direction_t gradule_direction,
                         uint32_t step_num, uint32_t duty_cyle_num, uint32_t duty_scale);
 
 /**
@@ -354,7 +354,7 @@ esp_err_t ledc_timer_resume(ledc_mode_t speed_mode, uint32_t timer_sel);
  *     - ESP_OK Success
  *
  */
-esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, uint32_t channel, uint32_t timer_idx);
+esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t timer_idx);
 
 /***************************EXAMPLE**********************************
  *
@@ -391,7 +391,7 @@ esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, uint32_t channel, uint
  *
  * ----------------EXAMPLE OF SETTING DUTY --- -----------------
  * @code{c}
- * uint32_t ledc_channel = LEDC_CHANNEL_0;                  //LEDC channel(0-73)
+ * ledc_channel_t ledc_channel = LEDC_CHANNEL_0;            //LEDC channel(0-73)
  * uint32_t duty = 2000;                                    //duty range is 0 ~ ((2**bit_num)-1)
  * LEDC_set_duty(LEDC_HIGH_SPEED_MODE, ledc_channel, duty); //set speed mode, channel, and duty.
  * ledc_update_duty(LEDC_HIGH_SPEED_MODE, ledc_channel);    //after set duty, we need to call ledc_update_duty to update the settings.
diff --git a/components/driver/ledc.c b/components/driver/ledc.c
index 77ca975969..c00cf26bb1 100644
--- a/components/driver/ledc.c
+++ b/components/driver/ledc.c
@@ -44,7 +44,7 @@ esp_err_t ledc_timer_set(ledc_mode_t speed_mode, ledc_timer_t timer_sel, uint32_
     return ESP_OK;
 }
 
-static esp_err_t ledc_duty_config(ledc_mode_t speed_mode, uint32_t channel_num, uint32_t hpoint_val, uint32_t duty_val,
+static esp_err_t ledc_duty_config(ledc_mode_t speed_mode, ledc_channel_t channel_num, uint32_t hpoint_val, uint32_t duty_val,
     uint32_t duty_direction, uint32_t duty_num, uint32_t duty_cycle, uint32_t duty_scale)
 {
     portENTER_CRITICAL(&ledc_spinlock);
@@ -58,7 +58,7 @@ static esp_err_t ledc_duty_config(ledc_mode_t speed_mode, uint32_t channel_num,
     return ESP_OK;
 }
 
-esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, uint32_t channel, uint32_t timer_idx)
+esp_err_t ledc_bind_channel_timer(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t timer_idx)
 {
     LEDC_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "ledc mode error", ESP_ERR_INVALID_ARG);
     LEDC_CHECK(timer_idx <= LEDC_TIMER_3, "ledc timer error", ESP_ERR_INVALID_ARG);
@@ -239,7 +239,7 @@ esp_err_t ledc_stop(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t idl
     portEXIT_CRITICAL(&ledc_spinlock);
     return ESP_OK;
 }
-esp_err_t ledc_set_fade(ledc_mode_t speed_mode, uint32_t channel, uint32_t duty, ledc_duty_direction_t fade_direction,
+esp_err_t ledc_set_fade(ledc_mode_t speed_mode, ledc_channel_t channel, uint32_t duty, ledc_duty_direction_t fade_direction,
     uint32_t step_num, uint32_t duty_cyle_num, uint32_t duty_scale)
 {
     LEDC_CHECK(speed_mode < LEDC_SPEED_MODE_MAX, "ledc mode error", ESP_ERR_INVALID_ARG);