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

21 Sep 2016


      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@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

    