Re: [PATCH] ASoC: wm8960: Fix wrong bclk and lrclk with pll enabled for some chips

[Charles Keepax]

On Fri, Mar 19, 2021 at 06:48:46PM +0800, Shengjiu Wang wrote:
> The input MCLK is 12.288MHz, the desired output sysclk is 11.2896MHz
> and sample rate is 44100Hz, with the configuration pllprescale=2,
> postscale=sysclkdiv=1, some chip may have wrong bclk
> and lrclk output with pll enabled in master mode, but with the
> configuration pllprescale=1, postscale=2, the output clock is correct.
> 
> >From Datasheet, the PLL performs best when f2 is between
> 90MHz and 100MHz when the desired sysclk output is 11.2896MHz
> or 12.288MHz, so sysclkdiv = 2 (f2/8) is the best choice.
> 
> So search available sysclk_divs from 2 to 1 other than from 1 to 2.
> 
> Fixes: 84fdc00d519f ("ASoC: codec: wm9860: Refactor PLL out freq search")
> Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
> ---

Acked-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>

Thanks,
Charles