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authorTom Rini2024-07-20 11:15:22 -0600
committerTom Rini2024-07-20 11:15:22 -0600
commit5024a96db8ea6ff2e814f4599af9e5faf09296b7 (patch)
treebc0d02e7022f796932c5d24c9d6b61b166488efa /dts/upstream/Bindings/sound/fsl,audmix.yaml
parentd353e30ef3610c01b031dc9ada53701b13d473d4 (diff)
parent762f85bb2e36762ee4d7395002b8181905aec690 (diff)
Subtree merge tag 'v6.10-dts' of devicetree-rebasing repo [1] into dts/upstreamHEADmaster
[1] https://git.kernel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git/
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/fsl,audmix.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP Audio Mixer (AUDMIX).
+
+maintainers:
+ - Shengjiu Wang <shengjiu.wang@nxp.com>
+ - Frank Li <Frank.Li@nxp.com>
+
+description: |
+ 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.
+
+properties:
+ compatible:
+ const: fsl,imx8qm-audmix
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: ipg
+
+ power-domains:
+ maxItems: 1
+
+ dais:
+ description: contain a list of phandles to AUDMIX connected DAIs.
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ minItems: 2
+ items:
+ - description: the AUDMIX output
+ maxItems: 1
+ - description: serial audio input 1
+ maxItems: 1
+ - description: serial audio input 2
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - power-domains
+ - dais
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ audmix@59840000 {
+ compatible = "fsl,imx8qm-audmix";
+ reg = <0x59840000 0x10000>;
+ clocks = <&amix_lpcg 0>;
+ clock-names = "ipg";
+ power-domains = <&pd_audmix>;
+ dais = <&sai4>, <&sai5>;
+ };