The SAI can connect to AUDMIX, but AUDMIX can be bypassed or not on i.MX952. There are three use cases:
1) SAI -> Codec (No AUDMIX between SAI and Codec) 2) SAI -> Codec (Has AUDMIX, but AUDMIX is bypassed) 3) SAI -> AUDMIX -> Codec (Has AUDMIX and used) So add 'fsl,sai-amix-mode' property for this feature fsl,sai-amix-mode = "none": is for case 1) fsl,sai-amix-mode = "bypass": is for case 2) fsl,sai-amix-mode = "audmix": is for case 3) Signed-off-by: Shengjiu Wang <[email protected]> --- .../devicetree/bindings/sound/fsl,sai.yaml | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/fsl,sai.yaml b/Documentation/devicetree/bindings/sound/fsl,sai.yaml index d838ee0b61cb..83b5ea5f3d70 100644 --- a/Documentation/devicetree/bindings/sound/fsl,sai.yaml +++ b/Documentation/devicetree/bindings/sound/fsl,sai.yaml @@ -133,6 +133,13 @@ properties: - description: dataline mask for 'rx' - description: dataline mask for 'tx' + fsl,sai-amix-mode: + $ref: /schemas/types.yaml#/definitions/string + description: + The audmix module is bypassed from hardware or not. + enum: [none, bypass, audmix] + default: none + fsl,sai-mclk-direction-output: description: SAI will output the SAI MCLK clock. type: boolean @@ -180,6 +187,15 @@ allOf: properties: fsl,sai-synchronous-rx: false + - if: + required: + - fsl,sai-amix-mode + then: + properties: + compatible: + contains: + const: fsl,imx952-sai + required: - compatible - reg -- 2.34.1
