From: Fabio Estevam festevam@denx.de
Currently, the reset_gpio polarity handling is done backwards.
The gpiod API takes the logic value of the GPIO, not the physical one.
As per the CS4265 datasheet:
"When RESET is low, the CS4265 enters a low-power mode and all internal states are reset"
If a devicetree describes reset_gpio as active-low, the correct behaviour would be to retrieve the GPIO and put in its active state (GPIOD_OUT_HIGH) and then move it to its inactive state so that it can be operational (logic level 0).
Fix it accordingly.
Fixes: fb6f806967f6 ("ASoC: Add support for the CS4265 CODEC") Signed-off-by: Fabio Estevam festevam@denx.de --- Changes since v1: - Newly introduced patch.
sound/soc/codecs/cs4265.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/cs4265.c b/sound/soc/codecs/cs4265.c index b89002189a2b..294fa7ac16cb 100644 --- a/sound/soc/codecs/cs4265.c +++ b/sound/soc/codecs/cs4265.c @@ -590,13 +590,13 @@ static int cs4265_i2c_probe(struct i2c_client *i2c_client, }
cs4265->reset_gpio = devm_gpiod_get_optional(&i2c_client->dev, - "reset", GPIOD_OUT_LOW); + "reset", GPIOD_OUT_HIGH); if (IS_ERR(cs4265->reset_gpio)) return PTR_ERR(cs4265->reset_gpio);
if (cs4265->reset_gpio) { mdelay(1); - gpiod_set_value_cansleep(cs4265->reset_gpio, 1); + gpiod_set_value_cansleep(cs4265->reset_gpio, 0); }
i2c_set_clientdata(i2c_client, cs4265);