return ret;
}
- mclk_rate = clk_get_rate(sii902x->audio.mclk);
-
- ret = sii902x_select_mclk_div(&i2s_config_reg, params->sample_rate,
- mclk_rate);
- if (mclk_rate != ret * params->sample_rate)
- dev_dbg(dev, "Inaccurate reference clock (%ld/%d != %u)\n",
- mclk_rate, ret, params->sample_rate);
+ if (sii902x->audio.mclk) {
+ mclk_rate = clk_get_rate(sii902x->audio.mclk);
+ ret = sii902x_select_mclk_div(&i2s_config_reg,
+ params->sample_rate, mclk_rate);
+ if (mclk_rate != ret * params->sample_rate)
+ dev_dbg(dev, "Inaccurate reference clock (%ld/%d != %u)\n",
+ mclk_rate, ret, params->sample_rate);
+ }
mutex_lock(&sii902x->mutex);
sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] |
i2s_lane_id[lanes[i]] | SII902X_TPI_I2S_FIFO_ENABLE;
- sii902x->audio.mclk = devm_clk_get(dev, "mclk");
+ sii902x->audio.mclk = devm_clk_get_optional(dev, "mclk");
if (IS_ERR(sii902x->audio.mclk)) {
dev_err(dev, "%s: No clock (audio mclk) found: %ld\n",
__func__, PTR_ERR(sii902x->audio.mclk));
- return 0;
+ return PTR_ERR(sii902x->audio.mclk);
}
sii902x->audio.pdev = platform_device_register_data(