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MLK-16563-1: ASoC: cs42xx8: reset the codec in the beginning of probe

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In AUDIO IO board for imx8qxp mek, after board reset, the codec
failed to probe, system can't find codec device on i2c bus.
The reason is not clear, but add reset operation in the beginning of
probe can fix this issue.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
This commit is contained in:
Shengjiu Wang 2017-10-10 16:59:50 +08:00 committed by Jason Liu
parent 74543072b8
commit 3041c698bb
1 changed files with 5 additions and 2 deletions
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7
sound/soc/codecs/cs42xx8.c
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@ -536,11 +536,12 @@ int cs42xx8_probe(struct device *dev, struct regmap *regmap)
cs42xx8->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0);
if (gpio_is_valid(cs42xx8->reset_gpio)) {
ret = devm_gpio_request_one(dev, cs42xx8->reset_gpio,
GPIOF_OUT_INIT_HIGH, "cs42xx8 reset");
GPIOF_OUT_INIT_LOW, "cs42xx8 reset");
if (ret) {
dev_err(dev, "unable to get reset gpio\n");
return ret;
}
gpio_set_value_cansleep(cs42xx8->reset_gpio, 1);
}
cs42xx8->clk = devm_clk_get(dev, "mclk");
@ -623,8 +624,10 @@ static int cs42xx8_runtime_resume(struct device *dev)
return ret;
}
if (gpio_is_valid(cs42xx8->reset_gpio))
if (gpio_is_valid(cs42xx8->reset_gpio)) {
gpio_set_value_cansleep(cs42xx8->reset_gpio, 0);
gpio_set_value_cansleep(cs42xx8->reset_gpio, 1);
}
ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
cs42xx8->supplies);