[alsa-devel] [PATCH 5/7] ASoC: wm_adsp: Put DSP into low power state between loading and running

[Charles Keepax]

On Tue, Sep 20, 2016 at 01:52:34PM +0100, Charles Keepax wrote:
> Between when we load the DSP and when it actually starts running put the
> core into a lower power state where the memory is retained but nothing
> is clocked.
> 
> Signed-off-by: Charles Keepax <ckeepax at opensource.wolfsonmicro.com>
> ---
> @@ -2344,6 +2355,11 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
>  		if (!dsp->booted)
>  			return -EIO;
>  
> +		ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
> +					 ADSP2_SYS_ENA, ADSP2_SYS_ENA);
> +		if (ret != 0)
> +			goto err;
> +

We actually need to wait for RAM_RDY again here, I will fire out
a new version of the patches in the next day or two.

Thanks,
Charles