ASoC: sgtl5000: Reset the CHIP_CLK_CTRL reg on remove
authorDetlev Casanova <detlev.casanova@collabora.com>
Thu, 10 Nov 2022 19:06:12 +0000 (14:06 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 2 Dec 2022 16:41:03 +0000 (17:41 +0100)
commitdd62cb7e6fd4ca243f8f88d744f18ea98180613a
tree4b7ecb51641b75b49062747302e84e14527bbdc7
parentd80ffd4823b6f472f7894bdc37e6fdba59615c65
ASoC: sgtl5000: Reset the CHIP_CLK_CTRL reg on remove

[ Upstream commit 0bb8e9b36b5b7f2e77892981ff6c27ee831d8026 ]

Since commit bf2aebccddef ("ASoC: sgtl5000: Fix noise on shutdown/remove"),
the device power control registers are reset when the driver is
removed/shutdown.

This is an issue when the device is configured to use the PLL clock. The
device will stop responding if it is still configured to use the PLL
clock but the PLL clock is powered down.

When rebooting linux, the probe function will show:
sgtl5000 0-000a: Error reading chip id -11

Make sure that the CHIP_CLK_CTRL is reset to its default value before
powering down the device.

Fixes: bf2aebccddef ("ASoC: sgtl5000: Fix noise on shutdown/remove")
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20221110190612.1341469-1-detlev.casanova@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
sound/soc/codecs/sgtl5000.c