Besides the fact that muxclk is optional, muxclk can be set using
assigned-clocks, removing the need to set it in driver. The warning is
thus unneeded, so we can transform it in a debug print, eventually to just
reflect that muxclk was not set by the driver.
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20201103100554.1307190-1-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
 
                err = PTR_ERR(muxclk);
                if (err == -EPROBE_DEFER)
                        return -EPROBE_DEFER;
-               dev_warn(dev->dev,
-                        "failed to get the I2S clock control: %d\n", err);
+               dev_dbg(dev->dev,
+                       "failed to get the I2S clock control: %d\n", err);
                return 0;
        }