From bfbf18d991756858337f7700e8ff0a6f0dc31afc Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Tue, 18 Oct 2016 10:10:24 +0200 Subject: dts: update to v4.9-rc1 Signed-off-by: Sascha Hauer --- dts/Bindings/sound/simple-scu-card.txt | 110 +++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 dts/Bindings/sound/simple-scu-card.txt (limited to 'dts/Bindings/sound/simple-scu-card.txt') diff --git a/dts/Bindings/sound/simple-scu-card.txt b/dts/Bindings/sound/simple-scu-card.txt new file mode 100644 index 0000000000..d6fe47ed09 --- /dev/null +++ b/dts/Bindings/sound/simple-scu-card.txt @@ -0,0 +1,110 @@ +ASoC simple SCU Sound Card + +Simple-Card specifies audio DAI connections of SoC <-> codec. + +Required properties: + +- compatible : "simple-scu-audio-card" + "renesas,rsrc-card" + +Optional properties: + +- simple-audio-card,name : User specified audio sound card name, one string + property. +- simple-audio-card,cpu : CPU sub-node +- simple-audio-card,codec : CODEC sub-node + +Optional subnode properties: + +- simple-audio-card,format : CPU/CODEC common audio format. + "i2s", "right_j", "left_j" , "dsp_a" + "dsp_b", "ac97", "pdm", "msb", "lsb" +- simple-audio-card,frame-master : Indicates dai-link frame master. + phandle to a cpu or codec subnode. +- simple-audio-card,bitclock-master : Indicates dai-link bit clock master. + phandle to a cpu or codec subnode. +- simple-audio-card,bitclock-inversion : bool property. Add this if the + dai-link uses bit clock inversion. +- simple-audio-card,frame-inversion : bool property. Add this if the + dai-link uses frame clock inversion. +- simple-audio-card,convert-rate : platform specified sampling rate convert +- simple-audio-card,convert-channels : platform specified converted channel size (2 - 8 ch) +- simple-audio-card,prefix : see audio-routing +- simple-audio-card,routing : A list of the connections between audio components. + Each entry is a pair of strings, the first being the connection's sink, + the second being the connection's source. Valid names for sources. + use audio-prefix if some components is using same sink/sources naming. + it can be used if compatible was "renesas,rsrc-card"; + +Required CPU/CODEC subnodes properties: + +- sound-dai : phandle and port of CPU/CODEC + +Optional CPU/CODEC subnodes properties: + +- 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) + If a clock is specified, it is + enabled with clk_prepare_enable() + in dai startup() and disabled with + clk_disable_unprepare() in dai + shutdown(). + +Example 1. Sampling Rate Covert + +sound { + compatible = "simple-scu-audio-card"; + + simple-audio-card,name = "rsnd-ak4643"; + simple-audio-card,format = "left_j"; + simple-audio-card,format = "left_j"; + simple-audio-card,bitclock-master = <&sndcodec>; + simple-audio-card,frame-master = <&sndcodec>; + + simple-audio-card,convert-rate = <48000>; /* see audio_clk_a */ + + simple-audio-card,prefix = "ak4642"; + simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback", + "DAI0 Capture", "ak4642 Capture"; + + sndcpu: simple-audio-card,cpu { + sound-dai = <&rcar_sound>; + }; + + sndcodec: simple-audio-card,codec { + sound-dai = <&ak4643>; + system-clock-frequency = <11289600>; + }; +}; + +Example 2. 2 CPU 1 Codec + +sound { + compatible = "renesas,rsrc-card"; + + card-name = "rsnd-ak4643"; + format = "left_j"; + bitclock-master = <&dpcmcpu>; + frame-master = <&dpcmcpu>; + + convert-rate = <48000>; /* see audio_clk_a */ + + audio-prefix = "ak4642"; + audio-routing = "ak4642 Playback", "DAI0 Playback", + "ak4642 Playback", "DAI1 Playback"; + + dpcmcpu: cpu@0 { + sound-dai = <&rcar_sound 0>; + }; + + cpu@1 { + sound-dai = <&rcar_sound 1>; + }; + + codec { + sound-dai = <&ak4643>; + clocks = <&audio_clock>; + }; +}; -- cgit v1.2.3