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author | Mark Brown <broonie@linaro.org> | 2014-01-02 13:01:52 +0000 |
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committer | Mark Brown <broonie@linaro.org> | 2014-01-02 13:01:52 +0000 |
commit | 7471c5c9f58eb7ff322dfcd7a8c6dc801c010b0d (patch) | |
tree | 47ca4dbfee257543b27a333a98560bb38bcb97ac /Documentation | |
parent | 75aac8206006e70859930d356ccfe02543530c27 (diff) | |
parent | dd41e0c4e35abc5a5679762ab108a6fcd9a0ead9 (diff) | |
download | linux-stable-7471c5c9f58eb7ff322dfcd7a8c6dc801c010b0d.tar.gz linux-stable-7471c5c9f58eb7ff322dfcd7a8c6dc801c010b0d.tar.bz2 linux-stable-7471c5c9f58eb7ff322dfcd7a8c6dc801c010b0d.zip |
Merge remote-tracking branch 'asoc/topic/dt' into asoc-next
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/sound/simple-card.txt | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt b/Documentation/devicetree/bindings/sound/simple-card.txt new file mode 100644 index 000000000000..769a346f890c --- /dev/null +++ b/Documentation/devicetree/bindings/sound/simple-card.txt @@ -0,0 +1,68 @@ +Simple-Card: + +Simple-Card specifies audio DAI connection of SoC <-> codec. + +Required properties: + +- compatible : "simple-audio-card" + +Optional properties: + +- simple-audio-card,format : CPU/CODEC common audio format. + "i2s", "right_j", "left_j" , "dsp_a" + "dsp_b", "ac97", "pdm", "msb", "lsb" +Required subnodes: + +- simple-audio-card,cpu : CPU sub-node +- simple-audio-card,codec : CODEC sub-node + +Required CPU/CODEC subnodes properties: + +- sound-dai : phandle and port of CPU/CODEC + +Optional CPU/CODEC subnodes properties: + +- format : CPU/CODEC specific audio format if needed. + see simple-audio-card,format +- frame-master : bool property. add this if subnode is frame master +- bitclock-master : bool property. add this if subnode is bitclock master +- bitclock-inversion : bool property. add this if subnode has clock inversion +- frame-inversion : bool property. add this if subnode has frame inversion +- clocks / system-clock-frequency : specify subnode's clock if needed. + it can be specified via "clocks" if system has + clock node (= common clock), or "system-clock-frequency" + (if system doens't support common clock) + +Example: + +sound { + compatible = "simple-audio-card"; + simple-audio-card,format = "left_j"; + + simple-audio-card,cpu { + sound-dai = <&sh_fsi2 0>; + }; + + simple-audio-card,codec { + sound-dai = <&ak4648>; + bitclock-master; + frame-master; + clocks = <&osc>; + }; +}; + +&i2c0 { + ak4648: ak4648@12 { + #sound-dai-cells = <0>; + compatible = "asahi-kasei,ak4648"; + reg = <0x12>; + }; +}; + +sh_fsi2: sh_fsi2@ec230000 { + #sound-dai-cells = <1>; + compatible = "renesas,sh_fsi2"; + reg = <0xec230000 0x400>; + interrupt-parent = <&gic>; + interrupts = <0 146 0x4>; +}; |