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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Shengjiu Wang The i.MX EASRC hardware supports up to four conversion contexts (A, B, C, D). Add a ports container property to the binding to allow each independent conversion path to be represented as an individual audio-graph port: port@0 -- conversion path 0 port@1 -- conversion path 1 port@2 -- conversion path 2 port@3 -- conversion path 3 Each sub-port references audio-graph-port.yaml and follows the standard audio-graph binding conventions. Contexts are allocated dynamically at stream open time; each active stream direction (playback or capture) on a port consumes one hardware context. Signed-off-by: Shengjiu Wang Reviewed-by: Frank Li Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/sound/fsl,easrc.yaml | 45 +++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/fsl,easrc.yaml b/Documentation/devicetree/bindings/sound/fsl,easrc.yaml index d5727f8bfb0b..a53ec4f6f1c0 100644 --- a/Documentation/devicetree/bindings/sound/fsl,easrc.yaml +++ b/Documentation/devicetree/bindings/sound/fsl,easrc.yaml @@ -55,6 +55,14 @@ properties: - const: imx/easrc/easrc-imx8mn.bin description: The coefficient table for the filters + ports: + $ref: /schemas/graph.yaml#/properties/ports + patternProperties: + "^port@[0-3]$": + $ref: audio-graph-port.yaml# + unevaluatedProperties: false + description: port for an independent conversion path + fsl,asrc-rate: $ref: /schemas/types.yaml#/definitions/uint32 minimum: 8000 @@ -106,4 +114,41 @@ examples: firmware-name = "imx/easrc/easrc-imx8mn.bin"; fsl,asrc-rate = <8000>; fsl,asrc-format = <2>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + playback-only; + endpoint { + remote-endpoint = <&fe00_ep>; + }; + }; + + port@1 { + reg = <1>; + playback-only; + endpoint { + remote-endpoint = <&fe01_ep>; + }; + }; + + port@2 { + reg = <2>; + capture-only; + endpoint { + remote-endpoint = <&fe02_ep>; + }; + }; + + port@3 { + reg = <3>; + capture-only; + endpoint { + remote-endpoint = <&fe03_ep>; + }; + }; + }; }; -- 2.34.1