linux-kernel - [PATCH v2 2/4] ASoC: dt-bindings: fsl,sai: Add AUDMIX mode support on i.MX952

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Message-Id: <20260120035210.1593742-3-shengjiu.wang@nxp.com>
Date: Tue, 20 Jan 2026 11:52:08 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: shengjiu.wang@...il.com,
	Xiubo.Lee@...il.com,
	festevam@...il.com,
	nicoleotsuka@...il.com,
	lgirdwood@...il.com,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	linux-sound@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 2/4] ASoC: dt-bindings: fsl,sai: Add AUDMIX mode support on i.MX952

The SAI can connect to AUDMIX, but AUDMIX can be bypassed or not on
i.MX952, so add 'fsl,sai-amix-mode' property for this feature, with
this property present, then SAI driver will try to config the setting,
fsl,sai-amix-mode = <0> is bypass mode, fsl,sai-amix-mode = <1> is
the AUDMIX mode.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 .../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..7808c324eebc 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/uint32
+    description:
+      The audmix module is bypassed from hardware or not.
+      Bypass AUDMIX(0), AUDMIX mode(1)
+    enum: [0, 1]
+
   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