From 7df946b66575f56c27ba7b10c0b17225dfff4065 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Wed, 23 Sep 2026 23:22:44 +0100
Subject: [PATCH] [ledc] Use register_apply_action for the set_frequency action
 (#19515)

---
 esphome/components/ledc/ledc_output.h | 15 ---------------
 esphome/components/ledc/output.py     | 19 ++-----------------
 tests/components/ledc/common.yaml     |  3 +++
 3 files changed, 5 insertions(+), 32 deletions(-)

diff --git a/esphome/components/ledc/ledc_output.h b/esphome/components/ledc/ledc_output.h
index b0a243f2e4..de63325455 100644
--- a/esphome/components/ledc/ledc_output.h
+++ b/esphome/components/ledc/ledc_output.h
@@ -2,7 +2,6 @@
 
 #include "esphome/core/component.h"
 #include "esphome/core/hal.h"
-#include "esphome/core/automation.h"
 #include "esphome/components/output/float_output.h"
 #include <cstdint>
 
@@ -43,20 +42,6 @@ class LEDCOutput final : public output::FloatOutput, public Component {
   bool initialized_ = false;
 };
 
-template<typename... Ts> class SetFrequencyAction final : public Action<Ts...> {
- public:
-  SetFrequencyAction(LEDCOutput *parent) : parent_(parent) {}
-  TEMPLATABLE_VALUE(float, frequency);
-
-  void play(const Ts &...x) {
-    float freq = this->frequency_.value(x...);
-    this->parent_->update_frequency(freq);
-  }
-
- protected:
-  LEDCOutput *parent_;
-};
-
 }  // namespace esphome::ledc
 
 #endif
diff --git a/esphome/components/ledc/output.py b/esphome/components/ledc/output.py
index e5e7c3dcbe..bb7f8de3fe 100644
--- a/esphome/components/ledc/output.py
+++ b/esphome/components/ledc/output.py
@@ -12,8 +12,6 @@ from esphome.const import (
     CONF_PHASE_ANGLE,
     CONF_PIN,
 )
-from esphome.core import ID
-from esphome.cpp_generator import MockObj, TemplateArgsType
 from esphome.types import ConfigType
 
 DEPENDENCIES = ["esp32"]
@@ -45,7 +43,6 @@ def validate_frequency(value: Any) -> float:
 
 ledc_ns = cg.esphome_ns.namespace("ledc")
 LEDCOutput = ledc_ns.class_("LEDCOutput", output.FloatOutput, cg.Component)
-SetFrequencyAction = ledc_ns.class_("SetFrequencyAction", automation.Action)
 
 CONFIG_SCHEMA = output.FLOAT_OUTPUT_SCHEMA.extend(
     {
@@ -77,25 +74,13 @@ async def to_code(config: ConfigType) -> None:
         cg.add(var.set_phase_angle(config[CONF_PHASE_ANGLE]))
 
 
-@automation.register_action(
+automation.register_apply_action(
     "output.ledc.set_frequency",
-    SetFrequencyAction,
     cv.Schema(
         {
             cv.Required(CONF_ID): cv.use_id(LEDCOutput),
             cv.Required(CONF_FREQUENCY): cv.templatable(validate_frequency),
         }
     ),
-    synchronous=True,
+    automation.ApplyField(CONF_FREQUENCY, "update_frequency", cg.float_),
 )
-async def ledc_set_frequency_to_code(
-    config: ConfigType,
-    action_id: ID,
-    template_arg: cg.TemplateArguments,
-    args: TemplateArgsType,
-) -> MockObj:
-    paren = await cg.get_variable(config[CONF_ID])
-    var = cg.new_Pvariable(action_id, template_arg, paren)
-    template_ = await cg.templatable(config[CONF_FREQUENCY], args, cg.float_)
-    cg.add(var.set_frequency(template_))
-    return var
diff --git a/tests/components/ledc/common.yaml b/tests/components/ledc/common.yaml
index 70352b4519..52bef63fbb 100644
--- a/tests/components/ledc/common.yaml
+++ b/tests/components/ledc/common.yaml
@@ -4,6 +4,9 @@ esphome:
       - output.ledc.set_frequency:
           id: test_ledc
           frequency: 100Hz
+      - output.ledc.set_frequency:
+          id: test_ledc
+          frequency: !lambda return 200.0f;
 
 output:
   - platform: ledc