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docs(i2s): add note for the restriction of MCLK on esp32

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Closes https://github.com/espressif/esp-idf/issues/18564
This commit is contained in:
Chen Chen
2026-05-22 11:42:55 +08:00
parent c5b7e9e44a
commit 61607dae46
3 changed files with 13 additions and 1 deletions
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components/esp_driver_i2s/i2s_common.c
+1 -1
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@@ -950,7 +950,7 @@ esp_err_t i2s_check_set_mclk(i2s_chan_handle_t handle, i2s_port_t id, int gpio_n
if (g_i2s.controller[id]->mclk_out_hdl == NULL) {
i2s_output_gpio_reserve(handle, gpio_num);
soc_clkout_sig_id_t clkout_sig = is_apll ? CLKOUT_SIG_APLL : (is_i2s0 ? CLKOUT_SIG_I2S0 : CLKOUT_SIG_I2S1);
ESP_RETURN_ON_ERROR(esp_clock_output_start(clkout_sig, gpio_num, &(g_i2s.controller[id]->mclk_out_hdl)), TAG, "mclk configure failed");
ESP_RETURN_ON_ERROR(esp_clock_output_start(clkout_sig, gpio_num, &(g_i2s.controller[id]->mclk_out_hdl)), TAG, "mclk configure failed, note: only gpio 0/1/3 are supported on esp32");
}
#else
ESP_RETURN_ON_FALSE(GPIO_IS_VALID_GPIO(gpio_num), ESP_ERR_INVALID_ARG, TAG, "mck_io_num invalid");