[alsa-devel] [PATCH] ASoC: wm8741: Fix setting BCLK and LRCLK polarity

Charles Keepax ckeepax at opensource.cirrus.com
Fri Nov 3 12:18:31 CET 2017


On Thu, Nov 02, 2017 at 02:23:02PM +0100, Sergej Sawazki wrote:
> After checking the code and the datasheet, it seems like we are handling
> the clock inversion (SND_SOC_DAIFMT_NB_IF and SND_SOC_DAIFMT_IB_IF) not
> correctly.
> 
> >From the datasheet (Table 58):
> R5 Format Control, BITS[5:4], [BCP:LRP]:
>   (0) 00 =  normal   BCLK, normal   LRCLK
>   (1) 01 =  normal   BCLK, inverted LRCLK <-- Fix this
>   (2) 10 =  inverted BCLK, normal   LRCLK
>   (3) 11 =  inverted BCLK, inverted LRCLK <-- Fix this
> 
> Signed-off-by: Sergej Sawazki <sergej at taudac.com>
> ---

Acked-by: Charles Keepax <ckeepax at opensource.cirrus.com>

Thanks,
Charle


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