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Commit 939fd1e8 authored by Charles Keepax's avatar Charles Keepax Committed by Mark Brown
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ASoC: wm_adsp: Add small delay while polling DSP RAM start 



Some devices are getting very close to the limit whilst polling the RAM
start, this patch adds a small delay to this loop to give a longer
startup timeout.

Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org
parent 6ce4eac1

sound/soc/codecs/wm_adsp.c

+7 −3
Original line number Diff line number Diff line
@@ -1474,13 +1474,17 @@ static int wm_adsp2_ena(struct wm_adsp *dsp) 
		return ret;



	/* Wait for the RAM to start, should be near instantaneous */

	count = 0;

	do {

	for (count = 0; count < 10; ++count) {

		ret = regmap_read(dsp->regmap, dsp->base + ADSP2_STATUS1,

				  &val);

		if (ret != 0)

			return ret;

	} while (!(val & ADSP2_RAM_RDY) && ++count < 10);



		if (val & ADSP2_RAM_RDY)

			break;



		msleep(1);

	}



	if (!(val & ADSP2_RAM_RDY)) {

		adsp_err(dsp, "Failed to start DSP RAM\n");