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| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2017-08-31 11:49:47 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-08-31 10:24:01 +0100 |
| commit | 19b0fa11bb1c0c24296c9f670a37c091bd3c815d (patch) | |
| tree | c2168c918eb3192ab2c53a49d2885bb30023c325 /Documentation | |
| parent | 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff) | |
| download | linux-19b0fa11bb1c0c24296c9f670a37c091bd3c815d.tar.bz2 | |
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')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/tlv320aic3x.txt | 5 |
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 |