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Diffstat (limited to 'Documentation/devicetree/bindings/sound/fsl,asrc.txt')
-rw-r--r-- | Documentation/devicetree/bindings/sound/fsl,asrc.txt | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/Documentation/devicetree/bindings/sound/fsl,asrc.txt b/Documentation/devicetree/bindings/sound/fsl,asrc.txt deleted file mode 100644 index 998b4c8a7f..0000000000 --- a/Documentation/devicetree/bindings/sound/fsl,asrc.txt +++ /dev/null @@ -1,80 +0,0 @@ -Freescale Asynchronous Sample Rate Converter (ASRC) Controller - -The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of a -signal associated with an input clock into a signal associated with a different -output clock. The driver currently works as a Front End of DPCM with other Back -Ends Audio controller such as ESAI, SSI and SAI. It has three pairs to support -three substreams within totally 10 channels. - -Required properties: - - - compatible : Compatible list, should contain one of the following - compatibles: - "fsl,imx35-asrc", - "fsl,imx53-asrc", - "fsl,imx8qm-asrc", - "fsl,imx8qxp-asrc", - - - reg : Offset and length of the register set for the device. - - - interrupts : Contains the spdif interrupt. - - - dmas : Generic dma devicetree binding as described in - Documentation/devicetree/bindings/dma/dma.txt. - - - dma-names : Contains "rxa", "rxb", "rxc", "txa", "txb" and "txc". - - - clocks : Contains an entry for each entry in clock-names. - - - clock-names : Contains the following entries - "mem" Peripheral access clock to access registers. - "ipg" Peripheral clock to driver module. - "asrck_<0-f>" Clock sources for input and output clock. - "spba" The spba clock is required when ASRC is placed as a - bus slave of the Shared Peripheral Bus and when two - or more bus masters (CPU, DMA or DSP) try to access - it. This property is optional depending on the SoC - design. - - - fsl,asrc-rate : Defines a mutual sample rate used by DPCM Back Ends. - - - fsl,asrc-width : Defines a mutual sample width used by DPCM Back Ends. - - - fsl,asrc-clk-map : Defines clock map used in driver. which is required - by imx8qm/imx8qxp platform - <0> - select the map for asrc0 in imx8qm/imx8qxp - <1> - select the map for asrc1 in imx8qm/imx8qxp - -Optional properties: - - - big-endian : If this property is absent, the little endian mode - will be in use as default. Otherwise, the big endian - mode will be in use for all the device registers. - - - fsl,asrc-format : Defines a mutual sample format used by DPCM Back - Ends, which can replace the fsl,asrc-width. - The value is 2 (S16_LE), or 6 (S24_LE). - -Example: - -asrc: asrc@2034000 { - compatible = "fsl,imx53-asrc"; - reg = <0x02034000 0x4000>; - interrupts = <0 50 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&clks 107>, <&clks 107>, <&clks 0>, - <&clks 0>, <&clks 0>, <&clks 0>, <&clks 0>, - <&clks 0>, <&clks 0>, <&clks 0>, <&clks 0>, - <&clks 0>, <&clks 0>, <&clks 0>, <&clks 0>, - <&clks 107>, <&clks 0>, <&clks 0>; - clock-names = "mem", "ipg", "asrck0", - "asrck_1", "asrck_2", "asrck_3", "asrck_4", - "asrck_5", "asrck_6", "asrck_7", "asrck_8", - "asrck_9", "asrck_a", "asrck_b", "asrck_c", - "asrck_d", "asrck_e", "asrck_f"; - dmas = <&sdma 17 23 1>, <&sdma 18 23 1>, <&sdma 19 23 1>, - <&sdma 20 23 1>, <&sdma 21 23 1>, <&sdma 22 23 1>; - dma-names = "rxa", "rxb", "rxc", - "txa", "txb", "txc"; - fsl,asrc-rate = <48000>; - fsl,asrc-width = <16>; -}; |