esp32c6: add esp_pm support

components/esp_pm/include/esp32c6/pm.h

@@ -0,0 +1,32 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+#pragma once
+#include <stdint.h>
+#include <stdbool.h>
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * @brief Power management config for ESP32C6
+ *
+ * Pass a pointer to this structure as an argument to esp_pm_configure function.
+ */
+typedef struct {
+    int max_freq_mhz;   /*!< Maximum CPU frequency, in MHz */
+    int min_freq_mhz;   /*!< Minimum CPU frequency to use when no locks are taken, in MHz */
+    bool light_sleep_enable;        /*!< Enter light sleep when no locks are taken */
+} esp_pm_config_esp32c6_t;
+
+
+#ifdef __cplusplus
+}
+#endif

components/esp_pm/include/esp_pm.h

@@ -21,6 +21,8 @@
 #include "esp32h2/pm.h"
 #elif CONFIG_IDF_TARGET_ESP32C2
 #include "esp32c2/pm.h"
+#elif CONFIG_IDF_TARGET_ESP32C6
+#include "esp32c6/pm.h"
 #endif
 
 #ifdef __cplusplus

components/esp_pm/pm_impl.c

@@ -56,6 +56,9 @@
 #elif CONFIG_IDF_TARGET_ESP32C2
 #include "esp32c2/pm.h"
 #include "driver/gpio.h"
+#elif CONFIG_IDF_TARGET_ESP32C6
+#include "esp32c6/pm.h"
+#include "driver/gpio.h"
 #endif
 
 #define MHZ (1000000)
@@ -85,13 +88,15 @@
 #define REF_CLK_DIV_MIN 2
 #elif CONFIG_IDF_TARGET_ESP32S3
 /* Minimal divider at which REF_CLK_FREQ can be obtained */
-#define REF_CLK_DIV_MIN 2
+#define REF_CLK_DIV_MIN 2         // TODO: IDF-5660
 #elif CONFIG_IDF_TARGET_ESP32C3
 #define REF_CLK_DIV_MIN 2
 #elif CONFIG_IDF_TARGET_ESP32H2
 #define REF_CLK_DIV_MIN 2
 #elif CONFIG_IDF_TARGET_ESP32C2
 #define REF_CLK_DIV_MIN 2
+#elif CONFIG_IDF_TARGET_ESP32C6
+#define REF_CLK_DIV_MIN 2
 #endif
 
 #ifdef CONFIG_PM_PROFILING
@@ -228,6 +233,8 @@ esp_err_t esp_pm_configure(const void* vconfig)
     const esp_pm_config_esp32h2_t* config = (const esp_pm_config_esp32h2_t*) vconfig;
 #elif CONFIG_IDF_TARGET_ESP32C2
     const esp_pm_config_esp32c2_t* config = (const esp_pm_config_esp32c2_t*) vconfig;
+#elif CONFIG_IDF_TARGET_ESP32C6
+    const esp_pm_config_esp32c6_t* config = (const esp_pm_config_esp32c6_t*) vconfig;
 #endif
 
 #ifndef CONFIG_FREERTOS_USE_TICKLESS_IDLE
@@ -338,6 +345,8 @@ esp_err_t esp_pm_get_configuration(void* vconfig)
     esp_pm_config_esp32h2_t* config = (esp_pm_config_esp32h2_t*) vconfig;
 #elif CONFIG_IDF_TARGET_ESP32C2
     esp_pm_config_esp32c2_t* config = (esp_pm_config_esp32c2_t*) vconfig;
+#elif CONFIG_IDF_TARGET_ESP32C6
+    esp_pm_config_esp32c6_t* config = (esp_pm_config_esp32c6_t*) vconfig;
 #endif
 
     portENTER_CRITICAL(&s_switch_lock);
@@ -782,6 +791,8 @@ void esp_pm_impl_init(void)
     esp_pm_config_esp32h2_t cfg = {
 #elif CONFIG_IDF_TARGET_ESP32C2
     esp_pm_config_esp32c2_t cfg = {
+#elif CONFIG_IDF_TARGET_ESP32C6
+    esp_pm_config_esp32c6_t cfg = {
 #endif
         .max_freq_mhz = CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ,
         .min_freq_mhz = xtal_freq_mhz,

components/esp_pm/test/test_pm.c

@@ -54,6 +54,8 @@ static void switch_freq(int mhz)
     esp_pm_config_esp32c3_t pm_config = {
 #elif CONFIG_IDF_TARGET_ESP32H2
     esp_pm_config_esp32h2_t pm_config = {
+#elif CONFIG_IDF_TARGET_ESP32C6
+    esp_pm_config_esp32c6_t pm_config = {
 #endif
         .max_freq_mhz = mhz,
         .min_freq_mhz = MIN(mhz, xtal_freq_mhz),
@@ -109,6 +111,8 @@ static void light_sleep_enable(void)
     esp_pm_config_esp32c3_t pm_config = {
 #elif CONFIG_IDF_TARGET_ESP32H2
     esp_pm_config_esp32h2_t pm_config = {
+#elif CONFIG_IDF_TARGET_ESP32C6
+    esp_pm_config_esp32c6_t pm_config = {
 #endif
         .max_freq_mhz = cur_freq_mhz,
         .min_freq_mhz = xtal_freq,
@@ -133,6 +137,8 @@ static void light_sleep_disable(void)
     esp_pm_config_esp32c3_t pm_config = {
 #elif CONFIG_IDF_TARGET_ESP32H2
     esp_pm_config_esp32h2_t pm_config = {
+#elif CONFIG_IDF_TARGET_ESP32C6
+    esp_pm_config_esp32c6_t pm_config = {
 #endif
         .max_freq_mhz = cur_freq_mhz,
         .min_freq_mhz = cur_freq_mhz,