From: Fabio Estevam fabio.estevam@freescale.com
sgtl5000 codec does not have a reset line, nor a reset command in software.
After a 'reboot' command in Linux or after pressing the system's reset button the sgtl5000 driver fails to probe:
sgtl5000 0-000a: Device with ID register ffff is not a sgtl5000 sgtl5000 0-000a: ASoC: failed to probe CODEC -19 imx-sgtl5000 sound.12: ASoC: failed to instantiate card -19 imx-sgtl5000 sound.12: snd_soc_register_card failed (-19)
As the sgtl5000 codec did not go through a real reset, we cannot rely on the reg_defaults array, since these are only valid after a clean power-on reset.
To fix this issue, use 'reg_defaults_raw' which tells the regcache driver to actually read the codec registers and then fill the cache.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- sound/soc/codecs/sgtl5000.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index 327b443..c59fae8 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -1470,8 +1470,8 @@ static const struct regmap_config sgtl5000_regmap = { .readable_reg = sgtl5000_readable,
.cache_type = REGCACHE_RBTREE, - .reg_defaults = sgtl5000_reg_defaults, - .num_reg_defaults = ARRAY_SIZE(sgtl5000_reg_defaults), + .reg_defaults_raw = sgtl5000_reg_defaults, + .num_reg_defaults_raw = ARRAY_SIZE(sgtl5000_reg_defaults), };
static int sgtl5000_i2c_probe(struct i2c_client *client,