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author | Tom Rini | 2024-07-20 11:15:22 -0600 |
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committer | Tom Rini | 2024-07-20 11:15:22 -0600 |
commit | 5024a96db8ea6ff2e814f4599af9e5faf09296b7 (patch) | |
tree | bc0d02e7022f796932c5d24c9d6b61b166488efa /dts/upstream/Bindings/sound/fsl,audmix.txt | |
parent | d353e30ef3610c01b031dc9ada53701b13d473d4 (diff) | |
parent | 762f85bb2e36762ee4d7395002b8181905aec690 (diff) |
[1] https://git.kernel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git/
Diffstat (limited to 'dts/upstream/Bindings/sound/fsl,audmix.txt')
-rw-r--r-- | dts/upstream/Bindings/sound/fsl,audmix.txt | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/dts/upstream/Bindings/sound/fsl,audmix.txt b/dts/upstream/Bindings/sound/fsl,audmix.txt deleted file mode 100644 index 840b7e0d6a6..00000000000 --- a/dts/upstream/Bindings/sound/fsl,audmix.txt +++ /dev/null @@ -1,50 +0,0 @@ -NXP Audio Mixer (AUDMIX). - -The Audio Mixer is a on-chip functional module that allows mixing of two -audio streams into a single audio stream. Audio Mixer has two input serial -audio interfaces. These are driven by two Synchronous Audio interface -modules (SAI). Each input serial interface carries 8 audio channels in its -frame in TDM manner. Mixer mixes audio samples of corresponding channels -from two interfaces into a single sample. Before mixing, audio samples of -two inputs can be attenuated based on configuration. The output of the -Audio Mixer is also a serial audio interface. Like input interfaces it has -the same TDM frame format. This output is used to drive the serial DAC TDM -interface of audio codec and also sent to the external pins along with the -receive path of normal audio SAI module for readback by the CPU. - -The output of Audio Mixer can be selected from any of the three streams - - serial audio input 1 - - serial audio input 2 - - mixed audio - -Mixing operation is independent of audio sample rate but the two audio -input streams must have same audio sample rate with same number of channels -in TDM frame to be eligible for mixing. - -Device driver required properties: -================================= - - compatible : Compatible list, contains "fsl,imx8qm-audmix" - - - reg : Offset and length of the register set for the device. - - - clocks : Must contain an entry for each entry in clock-names. - - - clock-names : Must include the "ipg" for register access. - - - power-domains : Must contain the phandle to AUDMIX power domain node - - - dais : Must contain a list of phandles to AUDMIX connected - DAIs. The current implementation requires two phandles - to SAI interfaces to be provided, the first SAI in the - list being used to route the AUDMIX output. - -Device driver configuration example: -====================================== - audmix: audmix@59840000 { - compatible = "fsl,imx8qm-audmix"; - reg = <0x0 0x59840000 0x0 0x10000>; - clocks = <&clk IMX8QXP_AUD_AUDMIX_IPG>; - clock-names = "ipg"; - power-domains = <&pd_audmix>; - dais = <&sai4>, <&sai5>; - }; |