From bb92bdfb3d3e552a410c4452aed438c3c9cbb8c7 Mon Sep 17 00:00:00 2001 From: Detlev Casanova Date: Thu, 10 Nov 2022 14:06:12 -0500 Subject: [PATCH] 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 Reviewed-by: Fabio Estevam Link: https://lore.kernel.org/r/20221110190612.1341469-1-detlev.casanova@collabora.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/sgtl5000.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index 3fafd9fc5cfd..75a45ad55aa8 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -1794,6 +1794,7 @@ static int sgtl5000_i2c_remove(struct i2c_client *client) { struct sgtl5000_priv *sgtl5000 = i2c_get_clientdata(client); + regmap_write(sgtl5000->regmap, SGTL5000_CHIP_CLK_CTRL, SGTL5000_CHIP_CLK_CTRL_DEFAULT); regmap_write(sgtl5000->regmap, SGTL5000_CHIP_DIG_POWER, SGTL5000_DIG_POWER_DEFAULT); regmap_write(sgtl5000->regmap, SGTL5000_CHIP_ANA_POWER, SGTL5000_ANA_POWER_DEFAULT);