[alsa-devel] PLL computation in TLV320AIC3x SoC driver

Liam Girdwood lrg at slimlogic.co.uk
Tue Dec 8 16:02:42 CET 2009

On Tue, 2009-12-08 at 12:28 +0100, Peter Meerwald wrote:
> Hello,
> I'm trying to use the SoC TLV320AIC3x codec driver with sysclk 16384000 
> and ran into some problems with setting PLL; below is a patch against 
> linux-2.6-asoc
> note that the original code uses variables pll_r and pll_p instead of the 
> loop variable r and p to compute tmp, this seems broken
> further, the original code does not respect the constraints on j (>= 4, <= 
> 55 for d==0) according to the codec's datasheet, and similarly for d!=0
> I've tested the code with a number of reasonable sysclk values and got 
> sane PLL values; please apply if acceptable

Can you confirm you also tested against 12.288MHz and 11.2869MHz ?

If so, Acked-by: Liam Girdwood <lrg at slimlogic.co.uk>



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