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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2017-08-31 11:49:47 +0300
committerMark Brown <broonie@kernel.org>2017-08-31 12:24:01 +0300
commit19b0fa11bb1c0c24296c9f670a37c091bd3c815d (patch)
treec2168c918eb3192ab2c53a49d2885bb30023c325 /Documentation/devicetree/bindings/sound/tlv320aic3x.txt
parent5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff)
downloadlinux-19b0fa11bb1c0c24296c9f670a37c091bd3c815d.tar.xz
ASoC: tlv320aic3x: Support for OCMV configuration
In aic3x class of devices Output Common-Mode Voltage can be configured for better analog performance. The OCMV value depends on the Analog and digital domain power supply voltage configuration. The default OCMV of 1.35V gives best performance when AVDD is around 2.7V and DVDD is 1.525V, but for higher AVDD/DVDD higher OCMV setting is recommended. The patch gives an automatic way of guessing the best OCMV which can be overwritten by a DT parameter if needed. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/sound/tlv320aic3x.txt')
-rw-r--r--Documentation/devicetree/bindings/sound/tlv320aic3x.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
index 47a213c411ce..ba5b45c483f5 100644
--- a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
+++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
@@ -26,6 +26,11 @@ Optional properties:
3 - MICBIAS output is connected to AVDD,
If this node is not mentioned or if the value is incorrect, then MicBias
is powered down.
+- ai3x-ocmv - Output Common-Mode Voltage selection:
+ 0 - 1.35V,
+ 1 - 1.5V,
+ 2 - 1.65V,
+ 3 - 1.8V
- AVDD-supply, IOVDD-supply, DRVDD-supply, DVDD-supply : power supplies for the
device as covered in Documentation/devicetree/bindings/regulator/regulator.txt