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Message-Id: <20191003154449.941253223@linuxfoundation.org>
Date: Thu, 3 Oct 2019 17:52:13 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Oleksandr Suvorov <oleksandr.suvorov@...adex.com>,
Marcel Ziswiler <marcel.ziswiler@...adex.com>,
Igor Opaniuk <igor.opaniuk@...adex.com>,
Fabio Estevam <festevam@...il.com>,
Mark Brown <broonie@...nel.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 055/185] ASoC: sgtl5000: Fix charge pump source assignment
From: Oleksandr Suvorov <oleksandr.suvorov@...adex.com>
[ Upstream commit b6319b061ba279577fd7030a9848fbd6a17151e3 ]
If VDDA != VDDIO and any of them is greater than 3.1V, charge pump
source can be assigned automatically [1].
[1] https://www.nxp.com/docs/en/data-sheet/SGTL5000.pdf
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@...adex.com>
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@...adex.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@...adex.com>
Reviewed-by: Fabio Estevam <festevam@...il.com>
Link: https://lore.kernel.org/r/20190719100524.23300-7-oleksandr.suvorov@toradex.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
sound/soc/codecs/sgtl5000.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index 0b11a2e01b2fc..b649675d190d2 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -1084,12 +1084,17 @@ static int sgtl5000_set_power_regs(struct snd_soc_codec *codec)
SGTL5000_INT_OSC_EN);
/* Enable VDDC charge pump */
ana_pwr |= SGTL5000_VDDC_CHRGPMP_POWERUP;
- } else if (vddio >= 3100 && vdda >= 3100) {
+ } else {
ana_pwr &= ~SGTL5000_VDDC_CHRGPMP_POWERUP;
- /* VDDC use VDDIO rail */
- lreg_ctrl |= SGTL5000_VDDC_ASSN_OVRD;
- lreg_ctrl |= SGTL5000_VDDC_MAN_ASSN_VDDIO <<
- SGTL5000_VDDC_MAN_ASSN_SHIFT;
+ /*
+ * if vddio == vdda the source of charge pump should be
+ * assigned manually to VDDIO
+ */
+ if (vddio == vdda) {
+ lreg_ctrl |= SGTL5000_VDDC_ASSN_OVRD;
+ lreg_ctrl |= SGTL5000_VDDC_MAN_ASSN_VDDIO <<
+ SGTL5000_VDDC_MAN_ASSN_SHIFT;
+ }
}
snd_soc_write(codec, SGTL5000_CHIP_LINREG_CTRL, lreg_ctrl);
--
2.20.1
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