deleted file mode 100644
@@ -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>;
- };
new file mode 100644
@@ -0,0 +1,83 @@
+# 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>;
+ };
Convert fsl,audmix.txt to yaml to let dtb check tools check audmix part. Signed-off-by: Frank Li <Frank.Li@nxp.com> --- Notes: Change from v1 to v2 - Add | at descript - Add phandle-array according to rob's feedback $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 dt_binding_check and DTB_CHECK passed. make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -j8 dt_binding_check DT_SCHEMA_FILES=fsl,audmix.yaml LINT Documentation/devicetree/bindings DTEX Documentation/devicetree/bindings/sound/fsl,audmix.example.dts CHKDT Documentation/devicetree/bindings/processed-schema.json SCHEMA Documentation/devicetree/bindings/processed-schema.json DTC_CHK Documentation/devicetree/bindings/sound/fsl,audmix.example.dtb .../devicetree/bindings/sound/fsl,audmix.txt | 50 ----------- .../devicetree/bindings/sound/fsl,audmix.yaml | 83 +++++++++++++++++++ 2 files changed, 83 insertions(+), 50 deletions(-) delete mode 100644 Documentation/devicetree/bindings/sound/fsl,audmix.txt create mode 100644 Documentation/devicetree/bindings/sound/fsl,audmix.yaml