projects / deliverable / linux.git / blame
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|---|---|---|
| 708b4351 NC |
1 | Freescale Generic ASoC Sound Card with ASRC support |
| 2 | ||
| 3 | The Freescale Generic ASoC Sound Card can be used, ideally, for all Freescale | |
| 4 | SoCs connecting with external CODECs. | |
| 5 | ||
| 6 | The idea of this generic sound card is a bit like ASoC Simple Card. However, | |
| 7 | for Freescale SoCs (especially those released in recent years), most of them | |
| 8 | have ASRC (Documentation/devicetree/bindings/sound/fsl,asrc.txt) inside. And | |
| 9 | this is a specific feature that might be painstakingly controlled and merged | |
| 10 | into the Simple Card. | |
| 11 | ||
| 12 | So having this generic sound card allows all Freescale SoC users to benefit | |
| 13 | from the simplification of a new card support and the capability of the wide | |
| 14 | sample rates support through ASRC. | |
| 15 | ||
| 50760cad MS |
16 | Note: The card is initially designed for those sound cards who use AC'97, I2S |
| 17 | and PCM DAI formats. However, it'll be also possible to support those non | |
| 18 | AC'97/I2S/PCM type sound cards, such as S/PDIF audio and HDMI audio, as | |
| 19 | long as the driver has been properly upgraded. | |
| 708b4351 NC |
20 | |
| 21 | ||
| 22 | The compatible list for this generic sound card currently: | |
| 50760cad MS |
23 | "fsl,imx-audio-ac97" |
| 24 | ||
| 708b4351 NC |
25 | "fsl,imx-audio-cs42888" |
| 26 | ||
| 57e756d3 FT |
27 | "fsl,imx-audio-cs427x" |
| 28 | (compatible with CS4271 and CS4272) | |
| 29 | ||
| 708b4351 NC |
30 | "fsl,imx-audio-wm8962" |
| 31 | (compatible with Documentation/devicetree/bindings/sound/imx-audio-wm8962.txt) | |
| 32 | ||
| 33 | "fsl,imx-audio-sgtl5000" | |
| 34 | (compatible with Documentation/devicetree/bindings/sound/imx-audio-sgtl5000.txt) | |
| 35 | ||
| 2935bf43 XL |
36 | "fsl,imx-audio-wm8960" |
| 37 | ||
| 708b4351 NC |
38 | Required properties: |
| 39 | ||
| 40 | - compatible : Contains one of entries in the compatible list. | |
| 41 | ||
| 42 | - model : The user-visible name of this sound complex | |
| 43 | ||
| 44 | - audio-cpu : The phandle of an CPU DAI controller | |
| 45 | ||
| 46 | - audio-codec : The phandle of an audio codec | |
| 47 | ||
| 48 | - audio-routing : A list of the connections between audio components. | |
| 49 | Each entry is a pair of strings, the first being the | |
| 50 | connection's sink, the second being the connection's | |
| 51 | source. There're a few pre-designed board connectors: | |
| 52 | * Line Out Jack | |
| 53 | * Line In Jack | |
| 54 | * Headphone Jack | |
| 55 | * Mic Jack | |
| 56 | * Ext Spk | |
| 57 | * AMIC (stands for Analog Microphone Jack) | |
| 58 | * DMIC (stands for Digital Microphone Jack) | |
| 59 | ||
| 60 | Note: The "Mic Jack" and "AMIC" are redundant while | |
| 6dca83fd | 61 | coexisting in order to support the old bindings |
| 708b4351 NC |
62 | of wm8962 and sgtl5000. |
| 63 | ||
| 64 | Optional properties: | |
| 65 | ||
| 66 | - audio-asrc : The phandle of ASRC. It can be absent if there's no | |
| 67 | need to add ASRC support via DPCM. | |
| 68 | ||
| 57e756d3 FT |
69 | Optional unless SSI is selected as a CPU DAI: |
| 70 | ||
| 71 | - mux-int-port : The internal port of the i.MX audio muxer (AUDMUX) | |
| 72 | ||
| 73 | - mux-ext-port : The external port of the i.MX audio muxer | |
| 74 | ||
| 708b4351 NC |
75 | Example: |
| 76 | sound-cs42888 { | |
| 77 | compatible = "fsl,imx-audio-cs42888"; | |
| 78 | model = "cs42888-audio"; | |
| 79 | audio-cpu = <&esai>; | |
| 80 | audio-asrc = <&asrc>; | |
| 81 | audio-codec = <&cs42888>; | |
| 82 | audio-routing = | |
| 83 | "Line Out Jack", "AOUT1L", | |
| 84 | "Line Out Jack", "AOUT1R", | |
| 85 | "Line Out Jack", "AOUT2L", | |
| 86 | "Line Out Jack", "AOUT2R", | |
| 87 | "Line Out Jack", "AOUT3L", | |
| 88 | "Line Out Jack", "AOUT3R", | |
| 89 | "Line Out Jack", "AOUT4L", | |
| 90 | "Line Out Jack", "AOUT4R", | |
| 91 | "AIN1L", "Line In Jack", | |
| 92 | "AIN1R", "Line In Jack", | |
| 93 | "AIN2L", "Line In Jack", | |
| 94 | "AIN2R", "Line In Jack"; | |
| 95 | }; |