diff options
| author | Curtis Malainey <cujomalainey@chromium.org> | 2019-11-05 17:13:36 -0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-11-11 13:02:07 +0000 |
| commit | 9da776ba7852f9b5cbfdfaa80a1dc07cda592b55 (patch) | |
| tree | e1617b697854165c7bf4c82d06f006c018c8fe82 /sound | |
| parent | ba0b3a977ecf525231d36f2d9f3a6ea05c35090a (diff) | |
| download | linux-9da776ba7852f9b5cbfdfaa80a1dc07cda592b55.tar.gz linux-9da776ba7852f9b5cbfdfaa80a1dc07cda592b55.tar.bz2 linux-9da776ba7852f9b5cbfdfaa80a1dc07cda592b55.zip | |
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>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/rt5677.c | 13 |
1 files changed, 13 insertions, 0 deletions
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); |