Added note and example of SPI support.

Signed-off-by: Jiri Prchal jiri.prchal@aksignal.cz --- .../devicetree/bindings/sound/tlv320aic3x.txt | 21 +++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt index 9796c4639262..20931a63fd64 100644 --- a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt +++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt @@ -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>; + }; +};