104 		if (!iface->mclk) {  in axg_tdm_iface_set_sysclk()
107 			ret = clk_set_rate(iface->mclk, freq);  in axg_tdm_iface_set_sysclk()
122 		if (!iface->mclk) {  in axg_tdm_iface_set_fmt()
123 			dev_err(dai->dev, "cpu clock master: mclk missing\n");  in axg_tdm_iface_set_fmt()
267 		/* If no specific mclk is requested, default to bit clock * 4 */  in axg_tdm_iface_set_sclk()
268 		clk_set_rate(iface->mclk, 4 * srate);  in axg_tdm_iface_set_sclk()
270 		/* Check if we can actually get the bit clock from mclk */  in axg_tdm_iface_set_sclk()
273 				"can't derive sclk %lu from mclk %lu\n",  in axg_tdm_iface_set_sclk()
454 			ret = clk_prepare_enable(iface->mclk);  in axg_tdm_iface_set_bias_level()
459 			clk_disable_unprepare(iface->mclk);  in axg_tdm_iface_set_bias_level()
529 	 * mclk maybe be missing when the cpu dai is in slave mode and  in axg_tdm_iface_probe()
531 	 * At this point, ignore the error if mclk is missing. We'll  in axg_tdm_iface_probe()
532 	 * throw an error if the cpu dai is master and mclk is missing  in axg_tdm_iface_probe()
534 	iface->mclk = devm_clk_get_optional(dev, "mclk");  in axg_tdm_iface_probe()
535 	if (IS_ERR(iface->mclk))  in axg_tdm_iface_probe()
536 		return dev_err_probe(dev, PTR_ERR(iface->mclk), "failed to get mclk\n");  in axg_tdm_iface_probe()