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 --- 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);