[alsa-devel] [PATCH] Add support for CLKOUT to wm8731 codec driver

Bill Gatliff bgat at billgatliff.com
Fri Oct 30 17:50:20 CET 2009

Mark Brown wrote:
>> +		dev_dbg(codec->dev, PREFIX "%s turning off CLKOUT\n", __func__);
>> +		reg = wm8731_read_reg_cache(codec, WM8731_PWR);
>> +		reg |= (1 << WM8731_PWR_CLKOUTPD);
>> +		wm8731_write(codec, WM8731_PWR, reg);
>> +	}
> It'd be better define a new clock for the CLKOUT pin rather than munging
> it in with the master clock.  MCLK is always an input on the WM8731, the
> CLKOUT output is a separate pin and so including it in MCLK is likely to
> make things confusing and could well introduce errors.

Could you explain more about what you meant by this?  I'm trying to
rework these patches now, and I don't understand how to implement what
you are suggesting.


Bill Gatliff
bgat at billgatliff.com

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