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ASoC: codecs: tlv320aic3x: add SPI to the DT binding 

Added note and example of SPI support.

Signed-off-by: Jiri Prchal <jiri.prchal@aksignal.cz>
Link: https://lore.kernel.org/r/20210408060741.6879-1-jiri.prchal@aksignal.cz
Signed-off-by: Mark Brown <broonie@kernel.org>
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Jiri Prchal 2021-04-08 08:07:41 +02:00 committed by Mark Brown
parent b186e7c17d
commit 38ec3006ec
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1 changed files with 19 additions and 2 deletions
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21
Documentation/devicetree/bindings/sound/tlv320aic3x.txt
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@ -1,6 +1,6 @@
Texas Instruments - tlv320aic3x Codec module
The tlv320aic3x serial control bus communicates through I2C protocols
The tlv320aic3x serial control bus communicates through both I2C and SPI bus protocols
Required properties:
@ -63,7 +63,7 @@ CODEC input pins for other compatible codecs:
The pins can be used in referring sound node's audio-routing property.
Example:
I2C example:
#include <dt-bindings/gpio/gpio.h>
@ -78,3 +78,20 @@ tlv320aic3x: tlv320aic3x@1b {
DRVDD-supply = <&regulator>;
DVDD-supply = <&regulator>;
};
SPI example:
spi0: spi@f0000000 {
tlv320aic3x: codec@0 {
compatible = "ti,tlv320aic3x";
reg = <0>; /* CS number */
#sound-dai-cells = <0>;
spi-max-frequency = <1000000>;
AVDD-supply = <&regulator>;
IOVDD-supply = <&regulator>;
DRVDD-supply = <&regulator>;
DVDD-supply = <&regulator>;
ai3x-ocmv = <0>;
};
};