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ASoC: rt5677: Wait for DSP to boot before loading firmware 

Wait for hardware to startup. If we load before hardware is ready we
could end up corrupting the firmware.

Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Link: https://lore.kernel.org/r/20191106011335.223061-12-cujomalainey@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Curtis Malainey 2019-11-05 17:13:36 -08:00 committed by Mark Brown
parent ba0b3a977e
commit 9da776ba78
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GPG Key ID: 24D68B725D5487D0
1 changed files with 13 additions and 0 deletions
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13
sound/soc/codecs/rt5677.c
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@ -892,6 +892,7 @@ static void rt5677_dsp_work(struct work_struct *work)
container_of(work, struct rt5677_priv, dsp_work.work);
static bool activity;
bool enable = rt5677->dsp_vad_en;
int i, val;
dev_info(rt5677->component->dev, "DSP VAD: enable=%d, activity=%d\n",
@ -913,6 +914,18 @@ static void rt5677_dsp_work(struct work_struct *work)
rt5677_set_vad_source(rt5677);
rt5677_set_dsp_mode(rt5677, true);
#define RT5677_BOOT_RETRY 20
for (i = 0; i < RT5677_BOOT_RETRY; i++) {
regmap_read(rt5677->regmap, RT5677_PWR_DSP_ST, &val);
if (val == 0x3ff)
break;
udelay(500);
}
if (i == RT5677_BOOT_RETRY && val != 0x3ff) {
dev_err(rt5677->component->dev, "DSP Boot Timed Out!");
return;
}
/* Boot the firmware from IRAM instead of SRAM0. */
rt5677_dsp_mode_i2c_write_addr(rt5677, RT5677_DSP_BOOT_VECTOR,
0x0009, 0x0003);