Merge branch 'feature/c2_systimer_26mhz' into 'master'

esp32c2: 26 MHz XTAL support: Kconfig option, systimer support

Closes IDF-5412 and IDF-5413

See merge request espressif/esp-idf!18835

components/bootloader_support/src/bootloader_clock_init.c

@@ -45,7 +45,10 @@ __attribute__((weak)) void bootloader_clock_configure(void)
 #if CONFIG_IDF_TARGET_ESP32
         clk_cfg.xtal_freq = CONFIG_ESP32_XTAL_FREQ;
 #endif
-        /* Except ESP32, there is no XTAL_FREQ choice */
+#if CONFIG_IDF_TARGET_ESP32C2
+        clk_cfg.xtal_freq = CONFIG_ESP32C2_XTAL_FREQ;
+#endif
+        /* For other chips, there is no XTAL_FREQ choice */
         clk_cfg.cpu_freq_mhz = cpu_freq_mhz;
         clk_cfg.slow_clk_src = rtc_clk_slow_src_get();
         if (clk_cfg.slow_clk_src == SOC_RTC_SLOW_CLK_SRC_INVALID) {

components/bootloader_support/src/bootloader_console.c

@@ -90,7 +90,7 @@ void bootloader_console_init(void)
     // Set configured UART console baud rate
     uint32_t clock_hz = rtc_clk_apb_freq_get();
 #if ESP_ROM_UART_CLK_IS_XTAL
-    clock_hz = UART_CLK_FREQ_ROM; // From esp32-s3 on, UART clock source is selected to XTAL in ROM
+    clock_hz = (uint32_t)rtc_clk_xtal_freq_get() * MHZ; // From esp32-s3 on, UART clk source is selected to XTAL in ROM
 #endif
     esp_rom_uart_set_clock_baudrate(uart_num, clock_hz, CONFIG_ESP_CONSOLE_UART_BAUDRATE);
 }