linux-kernel - [PATCH v3 1/3] ASoC: dt-bindings: qcom,q6afe: Document q6usb subnode

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Message-Id: <20250723-fp4-usb-audio-offload-v3-1-6be84ed4fc39@fairphone.com>
Date: Wed, 23 Jul 2025 16:03:38 +0200
From: Luca Weiss <luca.weiss@...rphone.com>
To: Srinivas Kandagatla <srini@...nel.org>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Jaroslav Kysela <perex@...ex.cz>, 
 Takashi Iwai <tiwai@...e.com>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 linux-sound@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Luca Weiss <luca.weiss@...rphone.com>, 
 Wesley Cheng <quic_wcheng@...cinc.com>
Subject: [PATCH v3 1/3] ASoC: dt-bindings: qcom,q6afe: Document q6usb
 subnode

Document the subnode for Q6USB, used for USB audio offloading.

Cc: Wesley Cheng <quic_wcheng@...cinc.com>
Acked-by: Rob Herring (Arm) <robh@...nel.org>
Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 Documentation/devicetree/bindings/sound/qcom,q6afe.yaml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/qcom,q6afe.yaml b/Documentation/devicetree/bindings/sound/qcom,q6afe.yaml
index 297aa362aa54ab41a956b3ceda73d4c7027d72a7..268f7073d7972da2ef46d36264c0f7d8f648071b 100644
--- a/Documentation/devicetree/bindings/sound/qcom,q6afe.yaml
+++ b/Documentation/devicetree/bindings/sound/qcom,q6afe.yaml
@@ -29,6 +29,12 @@ properties:
     unevaluatedProperties: false
     description: Qualcomm DSP audio ports
 
+  usbd:
+    type: object
+    $ref: /schemas/sound/qcom,q6usb.yaml#
+    unevaluatedProperties: false
+    description: Qualcomm DSP USB audio ports
+
 required:
   - compatible
   - dais
@@ -64,5 +70,12 @@ examples:
                     qcom,sd-lines = <0 1 2 3>;
                 };
             };
+
+            usbd {
+                compatible = "qcom,q6usb";
+                #sound-dai-cells = <1>;
+                iommus = <&apps_smmu 0x180f 0x0>;
+                qcom,usb-audio-intr-idx = /bits/ 16 <2>;
+            };
         };
     };

-- 
2.50.1