Commit 10a2b662 authored by Mark Brown's avatar Mark Brown
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ASoC: adsp: Keep ADSP2 memory powered off when not in use 



Turn off the ADSP memory when we aren't using it, saving a small amount of
power.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent e436cadd

sound/soc/codecs/wm_adsp.c

+11 −0
Original line number Diff line number Diff line
@@ -629,6 +629,17 @@ int wm_adsp2_init(struct wm_adsp *adsp, bool dvfs) 
{

	int ret;



	/*

	 * Disable the DSP memory by default when in reset for a small

	 * power saving.

	 */

	ret = regmap_update_bits(adsp->regmap, adsp->base + ADSP2_CONTROL,

				 ADSP2_MEM_ENA, 0);

	if (ret != 0) {

		adsp_err(adsp, "Failed to clear memory retention: %d\n", ret);

		return ret;

	}



	if (dvfs) {

		adsp->dvfs = devm_regulator_get(adsp->dev, "DCVDD");

		if (IS_ERR(adsp->dvfs)) {