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For some CPU/CODEC DAI devices the slot information maybe needed. This patch adds the slot information parsing for simple-card driver. Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
91 lines
2.5 KiB
Plaintext
91 lines
2.5 KiB
Plaintext
Simple-Card:
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Simple-Card specifies audio DAI connection of SoC <-> codec.
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Required properties:
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- compatible : "simple-audio-card"
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Optional properties:
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- simple-audio-card,name : User specified audio sound card name, one string
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property.
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- simple-audio-card,format : CPU/CODEC common audio format.
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"i2s", "right_j", "left_j" , "dsp_a"
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"dsp_b", "ac97", "pdm", "msb", "lsb"
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- simple-audio-card,widgets : Please refer to widgets.txt.
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- simple-audio-card,routing : A list of the connections between audio components.
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Each entry is a pair of strings, the first being the
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connection's sink, the second being the connection's
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source.
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- dai-tdm-slot-num : Please refer to tdm-slot.txt.
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- dai-tdm-slot-width : Please refer to tdm-slot.txt.
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Required subnodes:
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- simple-audio-card,cpu : CPU sub-node
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- simple-audio-card,codec : CODEC sub-node
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Required CPU/CODEC subnodes properties:
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- sound-dai : phandle and port of CPU/CODEC
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Optional CPU/CODEC subnodes properties:
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- format : CPU/CODEC specific audio format if needed.
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see simple-audio-card,format
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- frame-master : bool property. add this if subnode is frame master
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- bitclock-master : bool property. add this if subnode is bitclock master
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- bitclock-inversion : bool property. add this if subnode has clock inversion
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- frame-inversion : bool property. add this if subnode has frame inversion
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- clocks / system-clock-frequency : specify subnode's clock if needed.
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it can be specified via "clocks" if system has
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clock node (= common clock), or "system-clock-frequency"
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(if system doens't support common clock)
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Example:
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sound {
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compatible = "simple-audio-card";
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simple-audio-card,name = "VF610-Tower-Sound-Card";
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simple-audio-card,format = "left_j";
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simple-audio-card,widgets =
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"Microphone", "Microphone Jack",
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"Headphone", "Headphone Jack",
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"Speaker", "External Speaker";
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simple-audio-card,routing =
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"MIC_IN", "Microphone Jack",
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"Headphone Jack", "HP_OUT",
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"External Speaker", "LINE_OUT";
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dai-tdm-slot-num = <2>;
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dai-tdm-slot-width = <8>;
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simple-audio-card,cpu {
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sound-dai = <&sh_fsi2 0>;
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};
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simple-audio-card,codec {
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sound-dai = <&ak4648>;
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bitclock-master;
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frame-master;
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clocks = <&osc>;
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};
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};
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&i2c0 {
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ak4648: ak4648@12 {
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#sound-dai-cells = <0>;
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compatible = "asahi-kasei,ak4648";
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reg = <0x12>;
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};
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};
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sh_fsi2: sh_fsi2@ec230000 {
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#sound-dai-cells = <1>;
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compatible = "renesas,sh_fsi2";
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reg = <0xec230000 0x400>;
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interrupt-parent = <&gic>;
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interrupts = <0 146 0x4>;
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};
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