remove(legacy_sdm): remove legacy sdm driver in IDF v6.0

components/driver/CMakeLists.txt

@@ -26,11 +26,6 @@ if(CONFIG_SOC_RMT_SUPPORTED)
     list(APPEND srcs "deprecated/rmt_legacy.c")
 endif()
 
-# Sigma-Delta Modulation legacy driver
-if(CONFIG_SOC_SDM_SUPPORTED)
-    list(APPEND srcs "deprecated/sigma_delta_legacy.c")
-endif()
-
 # Touch Sensor related source files
 if(CONFIG_SOC_TOUCH_SENSOR_SUPPORTED)
     if(CONFIG_SOC_TOUCH_SENSOR_VERSION LESS 3)

components/driver/Kconfig

@@ -28,23 +28,6 @@ menu "Driver Configurations"
                 This configuration option allows the user to bypass the conflict check mechanism with legacy code.
     endmenu # Legacy I2C Driver Configurationss
 
-    menu "Legacy SDM Driver Configurations"
-        depends on SOC_SDM_SUPPORTED
-        config SDM_SUPPRESS_DEPRECATE_WARN
-            bool "Suppress legacy driver deprecated warning"
-            default n
-            help
-                whether to suppress the deprecation warnings when using legacy SDM driver (driver/sigmadelta.h).
-                If you want to continue using the legacy driver, and don't want to see related deprecation warnings,
-                you can enable this option.
-
-        config SDM_SKIP_LEGACY_CONFLICT_CHECK
-            bool "Skip legacy conflict check"
-            default n
-            help
-                This configuration option allows the user to bypass the conflict check mechanism with legacy code.
-    endmenu # Legacy SDM Driver Configurationss
-
     menu "Legacy Touch Sensor Driver Configurations"
         depends on SOC_TOUCH_SENSOR_SUPPORTED
         config TOUCH_SUPPRESS_DEPRECATE_WARN

components/driver/deprecated/driver/sigmadelta.h

@@ -1,82 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#pragma once
-
-#include <stdint.h>
-#include "esp_err.h"
-#include "driver/gpio.h"
-#include "driver/sigmadelta_types_legacy.h"
-
-#if !CONFIG_SDM_SUPPRESS_DEPRECATE_WARN
-#warning "The legacy sigma-delta driver is deprecated, please use driver/sdm.h"
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @brief Configure Sigma-delta channel
- *
- * @param  config Pointer of Sigma-delta channel configuration struct
- *
- * @return
- *     - ESP_OK Success
- *     - ESP_ERR_INVALID_STATE sigmadelta driver already initialized
- *     - ESP_ERR_INVALID_ARG Parameter error
- */
-esp_err_t sigmadelta_config(const sigmadelta_config_t *config);
-
-/**
- * @brief Set Sigma-delta channel duty.
- *
- *        This function is used to set Sigma-delta channel duty,
- *        If you add a capacitor between the output pin and ground,
- *        the average output voltage will be Vdc = VDDIO / 256 * duty + VDDIO/2,
- *        where VDDIO is the power supply voltage.
- *
- * @param channel Sigma-delta channel number
- * @param duty Sigma-delta duty of one channel, the value ranges from -128 to 127, recommended range is -90 ~ 90.
- *             The waveform is more like a random one in this range.
- *
- * @return
- *     - ESP_OK Success
- *     - ESP_ERR_INVALID_STATE sigmadelta driver has not been initialized
- *     - ESP_ERR_INVALID_ARG Parameter error
- */
-esp_err_t sigmadelta_set_duty(sigmadelta_channel_t channel, int8_t duty);
-
-/**
- * @brief Set Sigma-delta channel's clock pre-scale value.
- *        The source clock is APP_CLK, 80MHz. The clock frequency of the sigma-delta channel is APP_CLK / pre_scale
- *
- * @param channel Sigma-delta channel number
- * @param prescale The divider of source clock, ranges from 0 to 255
- *
- * @return
- *     - ESP_OK Success
- *     - ESP_ERR_INVALID_STATE sigmadelta driver has not been initialized
- *     - ESP_ERR_INVALID_ARG Parameter error
- */
-esp_err_t sigmadelta_set_prescale(sigmadelta_channel_t channel, uint8_t prescale);
-
-/**
- * @brief Set Sigma-delta signal output pin
- *
- * @param channel Sigma-delta channel number
- * @param gpio_num GPIO number of output pin.
- *
- * @return
- *     - ESP_OK Success
- *     - ESP_ERR_INVALID_STATE sigmadelta driver has not been initialized
- *     - ESP_ERR_INVALID_ARG Parameter error
- */
-esp_err_t sigmadelta_set_pin(sigmadelta_channel_t channel, gpio_num_t gpio_num);
-
-#ifdef __cplusplus
-}
-#endif

components/driver/deprecated/driver/sigmadelta_types_legacy.h

@@ -1,54 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#pragma once
-
-#include <stdint.h>
-#include "soc/soc_caps.h"
-#include "driver/gpio.h" // for gpio_num_t type define
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * @brief SIGMADELTA port number, the max port number is (SIGMADELTA_NUM_MAX -1).
- */
-typedef enum {
-    SIGMADELTA_PORT_0,      /*!< SIGMADELTA port 0 */
-    SIGMADELTA_PORT_MAX,    /*!< SIGMADELTA port max */
-} sigmadelta_port_t;
-
-/**
- * @brief Sigma-delta channel list
- */
-typedef enum {
-    SIGMADELTA_CHANNEL_0,   /*!< Sigma-delta channel 0 */
-    SIGMADELTA_CHANNEL_1,   /*!< Sigma-delta channel 1 */
-    SIGMADELTA_CHANNEL_2,   /*!< Sigma-delta channel 2 */
-    SIGMADELTA_CHANNEL_3,   /*!< Sigma-delta channel 3 */
-#if SOC_SDM_CHANNELS_PER_GROUP > 4
-    SIGMADELTA_CHANNEL_4,   /*!< Sigma-delta channel 4 */
-    SIGMADELTA_CHANNEL_5,   /*!< Sigma-delta channel 5 */
-    SIGMADELTA_CHANNEL_6,   /*!< Sigma-delta channel 6 */
-    SIGMADELTA_CHANNEL_7,   /*!< Sigma-delta channel 7 */
-#endif
-    SIGMADELTA_CHANNEL_MAX, /*!< Sigma-delta channel max */
-} sigmadelta_channel_t;
-
-/**
- * @brief Sigma-delta configure struct
- */
-typedef struct {
-    sigmadelta_channel_t channel; /*!< Sigma-delta channel number */
-    int8_t sigmadelta_duty;       /*!< Sigma-delta duty, duty ranges from -128 to 127. */
-    uint8_t sigmadelta_prescale;  /*!< Sigma-delta prescale, prescale ranges from 0 to 255. */
-    gpio_num_t sigmadelta_gpio;   /*!< Sigma-delta output io number, refer to gpio.h for more details. */
-} sigmadelta_config_t;
-
-#ifdef __cplusplus
-}
-#endif

components/driver/deprecated/sigma_delta_legacy.c

@@ -1,149 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include "esp_log.h"
-#include "esp_check.h"
-#include "esp_err.h"
-#include "esp_heap_caps.h"
-#include "driver/gpio.h"
-#include "driver/sigmadelta_types_legacy.h"
-#include "soc/sdm_periph.h"
-#include "hal/sdm_hal.h"
-#include "hal/sdm_ll.h"
-#include "hal/gpio_hal.h"
-#include "esp_rom_gpio.h"
-#include "esp_private/gpio.h"
-
-static const char *TAG = "sdm(legacy)";
-
-#define SIGMADELTA_CHECK(a,str,ret_val) ESP_RETURN_ON_FALSE(a, ret_val, TAG, "%s", str)
-
-typedef struct {
-    sdm_hal_context_t hal;        /*!< SIGMADELTA hal context*/
-} sigmadelta_obj_t;
-
-static sigmadelta_obj_t *p_sigmadelta_obj[SIGMADELTA_PORT_MAX] = {0};
-
-#define SIGMADELTA_OBJ_CHECK(sigmadelta_port) { \
-    SIGMADELTA_CHECK((sigmadelta_port < SIGMADELTA_PORT_MAX), "sigmadelta port error", ESP_ERR_INVALID_ARG); \
-    SIGMADELTA_CHECK((p_sigmadelta_obj[sigmadelta_port]), "sigmadelta driver has not been initialized", ESP_ERR_INVALID_STATE); \
-}
-
-static inline esp_err_t _sigmadelta_set_duty(sigmadelta_port_t sigmadelta_port, sigmadelta_channel_t channel, int8_t duty)
-{
-    SIGMADELTA_OBJ_CHECK(sigmadelta_port);
-
-    sdm_ll_set_pulse_density(p_sigmadelta_obj[sigmadelta_port]->hal.dev, channel, duty);
-    return ESP_OK;
-}
-
-static inline esp_err_t _sigmadelta_set_prescale(sigmadelta_port_t sigmadelta_port, sigmadelta_channel_t channel, uint8_t prescale)
-{
-    SIGMADELTA_OBJ_CHECK(sigmadelta_port);
-
-    sdm_ll_set_prescale(p_sigmadelta_obj[sigmadelta_port]->hal.dev, channel, prescale + 1);
-    return ESP_OK;
-}
-
-static inline esp_err_t _sigmadelta_set_pin(sigmadelta_port_t sigmadelta_port, sigmadelta_channel_t channel, gpio_num_t gpio_num)
-{
-    SIGMADELTA_OBJ_CHECK(sigmadelta_port);
-
-    gpio_func_sel(gpio_num, PIN_FUNC_GPIO);
-    gpio_set_direction(gpio_num, GPIO_MODE_OUTPUT);
-    esp_rom_gpio_connect_out_signal(gpio_num, sigma_delta_periph_signals.channels[channel].sd_sig, 0, 0);
-    return ESP_OK;
-}
-
-static inline esp_err_t _sigmadelta_config(sigmadelta_port_t sigmadelta_port, const sigmadelta_config_t *config)
-{
-    SIGMADELTA_OBJ_CHECK(sigmadelta_port);
-
-    _sigmadelta_set_duty(sigmadelta_port, config->channel, config->sigmadelta_duty);
-    _sigmadelta_set_prescale(sigmadelta_port, config->channel, config->sigmadelta_prescale);
-    _sigmadelta_set_pin(sigmadelta_port, config->channel, config->sigmadelta_gpio);
-    return ESP_OK;
-}
-
-esp_err_t sigmadelta_deinit(sigmadelta_port_t sigmadelta_port)
-{
-    SIGMADELTA_OBJ_CHECK(sigmadelta_port);
-
-    heap_caps_free(p_sigmadelta_obj[sigmadelta_port]);
-    p_sigmadelta_obj[sigmadelta_port] = NULL;
-    return ESP_OK;
-}
-
-esp_err_t sigmadelta_init(sigmadelta_port_t sigmadelta_port)
-{
-    SIGMADELTA_CHECK((sigmadelta_port < SIGMADELTA_PORT_MAX), "sigmadelta_port error", ESP_ERR_INVALID_ARG);
-    SIGMADELTA_CHECK((p_sigmadelta_obj[sigmadelta_port]) == NULL, "sigmadelta driver already initialized", ESP_ERR_INVALID_STATE);
-
-    p_sigmadelta_obj[sigmadelta_port] = (sigmadelta_obj_t *) heap_caps_calloc(1, sizeof(sigmadelta_obj_t), MALLOC_CAP_DEFAULT);
-
-    if (p_sigmadelta_obj[sigmadelta_port] == NULL) {
-        ESP_LOGE(TAG, "TAG driver malloc error");
-        return ESP_FAIL;
-    }
-
-    sdm_hal_init(&(p_sigmadelta_obj[sigmadelta_port]->hal), sigmadelta_port);
-    sdm_ll_enable_clock(p_sigmadelta_obj[sigmadelta_port]->hal.dev, true);
-    return ESP_OK;
-}
-
-// TODO: The following functions are wrappers, for compatibility with current API.
-
-esp_err_t sigmadelta_set_duty(sigmadelta_channel_t channel, int8_t duty)
-{
-    SIGMADELTA_CHECK(channel < SIGMADELTA_CHANNEL_MAX, "sigmadelta channel error", ESP_ERR_INVALID_ARG);
-    return _sigmadelta_set_duty(SIGMADELTA_PORT_0, channel, duty);
-}
-
-esp_err_t sigmadelta_set_prescale(sigmadelta_channel_t channel, uint8_t prescale)
-{
-    SIGMADELTA_CHECK(channel < SIGMADELTA_CHANNEL_MAX, "sigmadelta channel error", ESP_ERR_INVALID_ARG);
-    return _sigmadelta_set_prescale(SIGMADELTA_PORT_0, channel, prescale);
-}
-
-esp_err_t sigmadelta_set_pin(sigmadelta_channel_t channel, gpio_num_t gpio_num)
-{
-    SIGMADELTA_CHECK(channel < SIGMADELTA_CHANNEL_MAX, "sigmadelta channel error", ESP_ERR_INVALID_ARG);
-    SIGMADELTA_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(gpio_num), "sigmadelta gpio num error", ESP_ERR_INVALID_ARG);
-    return _sigmadelta_set_pin(SIGMADELTA_PORT_0, channel, gpio_num);
-}
-
-esp_err_t sigmadelta_config(const sigmadelta_config_t *config)
-{
-    SIGMADELTA_CHECK(config->channel < SIGMADELTA_CHANNEL_MAX, "sigmadelta channel error", ESP_ERR_INVALID_ARG);
-    SIGMADELTA_CHECK(GPIO_IS_VALID_OUTPUT_GPIO(config->sigmadelta_gpio), "sigmadelta gpio num error", ESP_ERR_INVALID_ARG);
-    esp_err_t ret;
-
-    if ((p_sigmadelta_obj[SIGMADELTA_PORT_0]) == NULL) {
-        ret = sigmadelta_init(SIGMADELTA_PORT_0);
-        if (ret != ESP_OK) {
-            return ret;
-        }
-    }
-    return _sigmadelta_config(SIGMADELTA_PORT_0, config);
-}
-
-#if !CONFIG_SDM_SKIP_LEGACY_CONFLICT_CHECK
-/**
- * @brief This function will be called during start up, to check that sdm driver is not running along with the legacy sdm driver
- */
-__attribute__((constructor))
-static void check_sdm_driver_conflict(void)
-{
-    // This function was declared as weak here. sdm driver has one implementation.
-    // So if sdm driver is not linked in, then `sdm_new_channel` should be NULL at runtime.
-    extern __attribute__((weak)) esp_err_t sdm_new_channel(const void *config, void **ret_unit);
-    if ((void *)sdm_new_channel != NULL) {
-        ESP_EARLY_LOGE(TAG, "CONFLICT! driver_ng is not allowed to be used with the legacy driver");
-        abort();
-    }
-    ESP_EARLY_LOGW(TAG, "legacy driver is deprecated, please migrate to `driver/sdm.h`");
-}
-#endif //CONFIG_PCNT_SKIP_LEGACY_CONFLICT_CHECK

components/driver/test_apps/.build-test-rules.yml

@@ -14,14 +14,6 @@ components/driver/test_apps/legacy_rmt_driver:
   depends_filepatterns:
     - components/driver/deprecated/**/*rmt*
 
-components/driver/test_apps/legacy_sigma_delta_driver:
-  disable:
-    - if: SOC_SDM_SUPPORTED != 1
-  depends_filepatterns:
-    - components/driver/deprecated/**/*sigma*
-  depends_components:
-    - esp_driver_gpio
-
 components/driver/test_apps/legacy_twai:
   disable:
     - if: SOC_TWAI_SUPPORTED != 1 or SOC_TWAI_SUPPORT_FD == 1

components/driver/test_apps/legacy_sigma_delta_driver/CMakeLists.txt

@@ -1,8 +0,0 @@
-# This is the project CMakeLists.txt file for the test subproject
-cmake_minimum_required(VERSION 3.16)
-
-# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
-set(COMPONENTS main)
-
-include($ENV{IDF_PATH}/tools/cmake/project.cmake)
-project(legacy_sigma_delta_driver_test)

components/driver/test_apps/legacy_sigma_delta_driver/README.md

@@ -1,2 +0,0 @@
-| Supported Targets | ESP32 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
-| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- | -------- |

components/driver/test_apps/legacy_sigma_delta_driver/main/CMakeLists.txt

@@ -1,11 +0,0 @@
-set(srcs "test_app_main.c")
-
-if(CONFIG_SOC_SDM_SUPPORTED)
-    list(APPEND srcs "test_sigma_delta_legacy.c")
-endif()
-
-# In order for the cases defined by `TEST_CASE` to be linked into the final elf,
-# the component can be registered as WHOLE_ARCHIVE
-idf_component_register(SRCS ${srcs}
-                       PRIV_REQUIRES unity driver esp_driver_gpio
-                       WHOLE_ARCHIVE)

components/driver/test_apps/legacy_sigma_delta_driver/main/test_app_main.c

@@ -1,41 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include "unity.h"
-#include "unity_test_runner.h"
-#include "esp_heap_caps.h"
-
-// Some resources are lazy allocated in gpio/dedicated_gpio/delta_sigma driver, the threshold is left for that case
-#define TEST_MEMORY_LEAK_THRESHOLD (-400)
-
-static size_t before_free_8bit;
-static size_t before_free_32bit;
-
-static void check_leak(size_t before_free, size_t after_free, const char *type)
-{
-    ssize_t delta = after_free - before_free;
-    printf("MALLOC_CAP_%s: Before %u bytes free, After %u bytes free (delta %d)\n", type, before_free, after_free, delta);
-    TEST_ASSERT_MESSAGE(delta >= TEST_MEMORY_LEAK_THRESHOLD, "memory leak");
-}
-
-void setUp(void)
-{
-    before_free_8bit = heap_caps_get_free_size(MALLOC_CAP_8BIT);
-    before_free_32bit = heap_caps_get_free_size(MALLOC_CAP_32BIT);
-}
-
-void tearDown(void)
-{
-    size_t after_free_8bit = heap_caps_get_free_size(MALLOC_CAP_8BIT);
-    size_t after_free_32bit = heap_caps_get_free_size(MALLOC_CAP_32BIT);
-    check_leak(before_free_8bit, after_free_8bit, "8BIT");
-    check_leak(before_free_32bit, after_free_32bit, "32BIT");
-}
-
-void app_main(void)
-{
-    unity_run_menu();
-}

components/driver/test_apps/legacy_sigma_delta_driver/main/test_sigma_delta_legacy.c

@@ -1,65 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include "freertos/FreeRTOS.h"
-#include "freertos/task.h"
-#include "unity.h"
-#include "soc/soc_caps.h"
-#include "driver/sigmadelta.h"
-
-TEST_CASE("SigmaDelta_config_test", "[sigma_delta]")
-{
-    sigmadelta_config_t sigmadelta_cfg = {
-        .sigmadelta_prescale = 80,
-        .sigmadelta_duty = 45,
-        .sigmadelta_gpio = 4,
-    };
-    for (int i = 0; i < SIGMADELTA_CHANNEL_MAX; i++) {
-        sigmadelta_cfg.channel = i;
-        TEST_ESP_OK(sigmadelta_config(&sigmadelta_cfg));
-    }
-
-    sigmadelta_cfg.channel = SIGMADELTA_CHANNEL_MAX;
-    TEST_ASSERT_EQUAL_MESSAGE(ESP_ERR_INVALID_ARG, sigmadelta_config(&sigmadelta_cfg), "wrong channel number should be inspected");
-}
-
-// connect GPIO4 with LED positive pin, and the GND pin connect LED negative pin
-// logic analyzer help also to see the wave form(more standard and accurate)
-TEST_CASE("SigmaDelta_pin_duty_prescale_set", "[sigma_delta]")
-{
-    sigmadelta_config_t sigmadelta_cfg = {
-        .channel = 0,
-        .sigmadelta_prescale = 80,
-        .sigmadelta_duty = 0,
-        .sigmadelta_gpio = 4,
-    };
-    TEST_ESP_OK(sigmadelta_config(&sigmadelta_cfg));
-
-    int8_t duty = 0;
-    int inc = 1;
-    for (int i = 0; i < 100; i++) {
-        sigmadelta_set_duty(sigmadelta_cfg.channel, duty);
-        vTaskDelay(10 / portTICK_PERIOD_MS);
-
-        duty += inc;
-        if (duty == 127 || duty == -127) {
-            inc = (-1) * inc;
-        }
-    }
-
-    TEST_ESP_OK(sigmadelta_set_prescale(0, 200));
-    for (int i = 0; i < 100; i++) {
-        sigmadelta_set_duty(sigmadelta_cfg.channel, duty);
-        vTaskDelay(10 / portTICK_PERIOD_MS);
-
-        duty += inc;
-        if (duty == 127 || duty == -127) {
-            inc = (-1) * inc;
-        }
-    }
-
-    TEST_ESP_OK(sigmadelta_set_pin(sigmadelta_cfg.channel, 5));
-}

components/driver/test_apps/legacy_sigma_delta_driver/pytest_legacy_sigma_delta.py

@@ -1,22 +0,0 @@
-# SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
-# SPDX-License-Identifier: CC0-1.0
-import pytest
-from pytest_embedded_idf import IdfDut
-from pytest_embedded_idf.utils import idf_parametrize
-
-
-@pytest.mark.generic
-@pytest.mark.parametrize(
-    'config',
-    [
-        'release',
-    ],
-    indirect=True,
-)
-@idf_parametrize(
-    'target',
-    ['esp32', 'esp32c3', 'esp32c5', 'esp32c6', 'esp32h2', 'esp32s2', 'esp32s3', 'esp32p4'],
-    indirect=['target'],
-)
-def test_legacy_sigma_delta(dut: IdfDut) -> None:
-    dut.run_all_single_board_cases(group='sigma_delta')

components/driver/test_apps/legacy_sigma_delta_driver/sdkconfig.ci.release

@@ -1,5 +0,0 @@
-CONFIG_PM_ENABLE=y
-CONFIG_FREERTOS_USE_TICKLESS_IDLE=y
-CONFIG_COMPILER_OPTIMIZATION_SIZE=y
-CONFIG_BOOTLOADER_COMPILER_OPTIMIZATION_SIZE=y
-CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT=y

components/driver/test_apps/legacy_sigma_delta_driver/sdkconfig.defaults

@@ -1,3 +0,0 @@
-CONFIG_FREERTOS_HZ=1000
-CONFIG_ESP_TASK_WDT_EN=n
-CONFIG_SDM_SUPPRESS_DEPRECATE_WARN=y

docs/en/migration-guides/release-5.x/5.0/peripherals.rst

@@ -91,15 +91,17 @@ GPIO
 
 .. only:: SOC_SDM_SUPPORTED
 
-    Sigma-Delta Modulator
+    .. _deprecate_sdm_legacy_driver:
-    ---------------------
+
+    Legacy Sigma-Delta Modulator Driver is Deprecated
+    -------------------------------------------------
 
     The Sigma-Delta Modulator driver has been redesigned into :doc:`SDM <../../../api-reference/peripherals/sdm>`.
 
     - The new driver implements a factory pattern, where the SDM channels are managed in a pool internally, thus users do not have to fix a SDM channel to a GPIO manually.
     - All SDM channels can be allocated dynamically.
 
-    Although it is recommended to use the new driver APIs, the legacy driver is still available in the previous include path ``driver/sigmadelta.h``. However, by default, including ``driver/sigmadelta.h`` triggers the build warning below. The warning can be suppressed by Kconfig option :ref:`CONFIG_SDM_SUPPRESS_DEPRECATE_WARN`.
+    Although it is recommended to use the new driver APIs, the legacy driver is still available in the previous include path ``driver/sigmadelta.h``. However, by default, including ``driver/sigmadelta.h`` triggers the build warning below. The warning can be suppressed by Kconfig option ``CONFIG_SDM_SUPPRESS_DEPRECATE_WARN``.
 
     .. code-block:: text
 
@@ -122,9 +124,7 @@ GPIO
     - Channel configuration was done by channel allocation, in :cpp:func:`sdm_new_channel`. In the new driver, only the ``density`` can be changed at runtime, by :cpp:func:`sdm_channel_set_pulse_density`. Other parameters like ``gpio number`` and ``prescale`` are only allowed to set during channel allocation.
     - Before further channel operations, users should **enable** the channel in advance, by calling :cpp:func:`sdm_channel_enable`. This function helps to manage some system level services, like **Power Management**.
 
-    .. _deprecate_gptimer_legacy_driver:
+.. only:: SOC_GPTIMER_SUPPORTED
-
-.. only:: not SOC_SDM_SUPPORTED
 
     .. _deprecate_gptimer_legacy_driver:
 

docs/en/migration-guides/release-6.x/6.0/peripherals.rst

@@ -116,3 +116,10 @@ SDMMC
     -------------------------------------------
 
     The legacy temperature sensor driver ``driver/temp_sensor.h`` is deprecated since version 5.0 (see :ref:`deprecate_tsens_legacy_driver`). Starting from version 6.0, the legacy driver is completely removed. The new driver is placed in the :component:`esp_driver_tsens`, and the header file path is ``driver/temperature_sensor.h``.
+
+.. only:: SOC_SDM_SUPPORTED
+
+    Legacy Sigma-Delta Modulator Driver is Removed
+    ----------------------------------------------
+
+    The legacy Sigma-Delta Modulator driver ``driver/sigmadelta.h`` is deprecated since version 5.0 (see :ref:`deprecate_sdm_legacy_driver`). Starting from version 6.0, the legacy driver is completely removed. The new driver is placed in the :component:`esp_driver_sdm`, and the header file path is ``driver/sdm.h``.

docs/zh_CN/migration-guides/release-5.x/5.0/peripherals.rst

@@ -90,15 +90,17 @@ GPIO
 
 .. only:: SOC_SDM_SUPPORTED
 
-    Sigma-Delta 调制器
+    .. _deprecate_sdm_legacy_driver:
-    ---------------------------------
+
+    旧版 Sigma-Delta 调制器驱动已被弃用
+    --------------------------------------------------
 
     Sigma-Delta 调制器的驱动现已更新为 :doc:`SDM <../../../api-reference/peripherals/sdm>`。
 
     - 新驱动中实现了工厂模式，SDM 通道都位于内部通道池中，因此用户无需手动将 SDM 通道配置到 GPIO 管脚。
     - SDM 通道会被自动分配。
 
-    尽管我们推荐用户使用新的驱动 API，旧版驱动仍然可用，位于头文件引用路径 ``driver/sigmadelta.h`` 中。但是，引用 ``driver/sigmadelta.h`` 会默认触发如下编译警告，可通过配置 Kconfig 选项 :ref:`CONFIG_SDM_SUPPRESS_DEPRECATE_WARN` 关闭该警告。
+    尽管我们推荐用户使用新的驱动 API，旧版驱动仍然可用，位于头文件引用路径 ``driver/sigmadelta.h`` 中。但是，引用 ``driver/sigmadelta.h`` 会默认触发如下编译警告，可通过配置 Kconfig 选项 ``CONFIG_SDM_SUPPRESS_DEPRECATE_WARN`` 关闭该警告。
 
     .. code-block:: text
 
@@ -121,9 +123,7 @@ GPIO
     - 更新前，通道配置由通道分配在 :cpp:func:`sdm_new_channel` 完成。在新驱动中，只有 ``density`` 可在运行时由 :cpp:func:`sdm_channel_set_pulse_density` 更新。其他参数如 ``gpio number``、 ``prescale`` 只能在通道分配时进行设置。
     - 在进行下一步通道操作前，用户应通过调用 :cpp:func:`sdm_channel_enable` 提前 **使能** 该通道。该函数有助于管理一些系统级服务，如 **电源管理**。
 
-    .. _deprecate_gptimer_legacy_driver:
+.. only:: SOC_GPTIMER_SUPPORTED
-
-.. only:: not SOC_SDM_SUPPORTED
 
     .. _deprecate_gptimer_legacy_driver:
 

docs/zh_CN/migration-guides/release-6.x/6.0/peripherals.rst

@@ -115,3 +115,10 @@ SDMMC
     ------------------------------------
 
     旧版的温度传感器驱动 ``driver/temp_sensor.h`` 在 5.1 的版本中就已经被弃用（请参考 :ref:`deprecate_tsens_legacy_driver`）。从 6.0 版本开始，旧版驱动被完全移除。新驱动位于 :component:`esp_driver_tsens` 组件中，头文件引用路径为 ``driver/temperature_sensor.h``。
+
+.. only:: SOC_SDM_SUPPORTED
+
+    旧版 Sigma-Delta 调制器驱动被移除
+    ---------------------------------
+
+    旧版的 Sigma-Delta 调制器驱动 ``driver/sigmadelta.h`` 在 5.0 的版本中就已经被弃用（请参考 :ref:`deprecate_sdm_legacy_driver`）。从 6.0 版本开始，旧版驱动被完全移除。新驱动位于 :component:`esp_driver_sdm` 组件中，头文件引用路径为 ``driver/sdm.h``。

tools/idf_py_actions/hints.yml

@@ -519,3 +519,6 @@
         -
             re_variables: ['driver/mcpwm.h']
             hint_variables: ['legacy MCPWM', 'driver/mcpwm_prelude', 'esp_driver_mcpwm']
+        -
+            re_variables: ['driver/sigmadelta.h']
+            hint_variables: ['legacy Sigma-Delta', 'driver/sdm.h', 'esp_driver_sdm']