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authorXiubo Li <Li.Xiubo@freescale.com>2014-02-14 05:34:34 +0400
committerMark Brown <broonie@linaro.org>2014-02-23 09:15:27 +0400
commit72899ad8a46a80ad5fc725afea443f94945ae370 (patch)
tree6ff17fc4c21fb615cc4a1625f43c5708fd764748 /Documentation/devicetree/bindings/sound/tdm-slot.txt
parentac7f4820301b6b6029f01e4c276c2cd42272d9cb (diff)
downloadlinux-72899ad8a46a80ad5fc725afea443f94945ae370.tar.xz
ASoC: binding: add tdm-slot.txt
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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+TDM slot:
+
+This specifies audio DAI's TDM slot.
+
+TDM slot properties:
+dai-tdm-slot-num : Number of slots in use.
+dai-tdm-slot-width : Width in bits for each slot.
+
+For instance:
+ dai-tdm-slot-num = <2>;
+ dai-tdm-slot-width = <8>;
+
+And for each spcified driver, there could be one .of_xlate_tdm_slot_mask()
+to specify a explicit mapping of the channels and the slots. If it's absent
+the default snd_soc_of_xlate_tdm_slot_mask() will be used to generating the
+tx and rx masks.
+
+For snd_soc_of_xlate_tdm_slot_mask(), the tx and rx masks will use a 1 bit
+for an active slot as default, and the default active bits are at the LSB of
+the masks.