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i2s: add mclk_div underflow check

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Closes https://github.com/espressif/esp-idf/issues/8344
This commit is contained in:
laokaiyao
2022-02-23 19:43:53 +08:00
parent 19f4eca4b9
commit 15e8601cfc
1 changed files with 1 additions and 1 deletions
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2
components/driver/i2s.c
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@@ -1002,7 +1002,7 @@ static esp_err_t i2s_calculate_adc_dac_clock(int i2s_num, i2s_hal_clock_cfg_t *c
/* Set I2S bit clock */
clk_cfg->bclk = p_i2s[i2s_num]->hal_cfg.sample_rate * I2S_LL_AD_BCK_FACTOR;
/* Set I2S bit clock default division */
clk_cfg->bclk_div = I2S_LL_AD_BCK_FACTOR * 16;
clk_cfg->bclk_div = p_i2s[i2s_num]->hal_cfg.chan_bits;
/* If fixed_mclk and use_apll are set, use fixed_mclk as mclk frequency, otherwise calculate by mclk = sample_rate * multiple */
clk_cfg->mclk = (p_i2s[i2s_num]->use_apll && p_i2s[i2s_num]->fixed_mclk) ?
p_i2s[i2s_num]->fixed_mclk : clk_cfg->bclk * clk_cfg->bclk_div;