From: Oleksandr Suvorov <oleksandr.suvo...@toradex.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.suvo...@toradex.com> Reviewed-by: Marcel Ziswiler <marcel.ziswi...@toradex.com> Reviewed-by: Igor Opaniuk <igor.opan...@toradex.com> Reviewed-by: Fabio Estevam <feste...@gmail.com> Link: https://lore.kernel.org/r/20190719100524.23300-7-oleksandr.suvo...@toradex.com Signed-off-by: Mark Brown <broo...@kernel.org> Signed-off-by: Sasha Levin <sas...@kernel.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 aad9eca41587e..7cbaedffa1ef7 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -1173,12 +1173,17 @@ static int sgtl5000_set_power_regs(struct snd_soc_component *component) 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_component_write(component, SGTL5000_CHIP_LINREG_CTRL, lreg_ctrl); -- 2.20.1
