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@xxxxxxxxxxxx>
---
sound/soc/codecs/rt5677.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index 0e7773584145..f2f763b4c399 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -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);
--
2.24.0.rc1.363.gb1bccd3e3d-goog
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