diff mbox series

[v4,6/6] ASoC: sgtl5000: Fix charge pump source assignment

Message ID 20190717163014.429-7-oleksandr.suvorov@toradex.com (mailing list archive)
State New, archived
Headers show
Series VAG power control improvement for sgtl5000 codec | expand

Commit Message

Oleksandr Suvorov July 17, 2019, 4:30 p.m. UTC 
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>
---

Changes in v4: None
Changes in v3:
- Add the reference to NXP SGTL5000 data sheet to commit message
- Fix multi-line comment format

Changes in v2:
- Fix patch formatting

 sound/soc/codecs/sgtl5000.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

Comments

Fabio Estevam July 17, 2019, 4:50 p.m. UTC | #1 
On Wed, Jul 17, 2019 at 1:30 PM Oleksandr Suvorov
<oleksandr.suvorov@toradex.com> wrote:
>
> 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>
diff mbox series

Patch

diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index 31d546abde717..a04cba66615de 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -1328,12 +1328,17 @@  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);