Commit 4eae67c6 authored Jul 19, 2019 by Oleksandr Suvorov Committed by Greg Kroah-Hartman Oct 05, 2019

ASoC: sgtl5000: Fix charge pump source assignment

[ 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@toradex.com>
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20190719100524.23300-7-oleksandr.suvorov@toradex.com


Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 22a46dcf

sound/soc/codecs/sgtl5000.c

+10 −5

Original line number	Diff line number	Diff line
		@@ -987,13 +987,18 @@ 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 */
		/*
		* 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);