Re: [PATCH 2/5] ASoC: dt-bindings: document WCD939x Audio Codec

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On 24/11/2023 09:33, Krzysztof Kozlowski wrote:
On 23/11/2023 15:49, Neil Armstrong wrote:

+  Qualcomm WCD9390/WCD9395 Codec is a standalone Hi-Fi audio codec IC.
+  It has RX and TX Soundwire slave devices.
+  The WCD9390/WCD9395 IC has a functionally separate USB-C Mux subsystem
+  accessible over an I2C interface.
+  The Audio Headphone and Microphone data path between the Codec and the USB-C Mux
+  subsystems are external to the IC, thus requiring DT port-endpoint graph description
+  to handle USB-C altmode & orientation switching for Audio Accessory Mode.
+
+allOf:
+  - $ref: dai-common.yaml#
+  - $ref: qcom,wcd93xx-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - qcom,wcd9390-codec
+      - qcom,wcd9395-codec

9395 should be compatible with 9390, so please express it with a list
using fallback. I know that earlier wcd93xx do not follow that concept,
but maybe we will fix them some point as well.

I don't get why this would be needed, yes their are compatible but still
two separate ICs with different internal capabilities.

It the first time I get such request for new documentation


+
+  mode-switch:
+    description: Flag the port as possible handle of altmode switching
+    type: boolean
+
+  orientation-switch:
+    description: Flag the port as possible handler of orientation switching
+    type: boolean
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description:
+      A port node to link the WCD939x Codec node to USB MUX subsystems for the
+      purpose of handling altmode muxing and orientation switching to detecte and
+      enable Audio Accessory Mode.
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    codec {
+        compatible = "qcom,wcd9390-codec";
+        reset-gpios = <&tlmm 32 0>;

Please define for the GPIO flag.

Ack


+        #sound-dai-cells = <1>;
+        qcom,tx-device = <&wcd939x_tx>;
+        qcom,rx-device = <&wcd939x_rx>;
+        qcom,micbias1-microvolt = <1800000>;
+        qcom,micbias2-microvolt = <1800000>;
+        qcom,micbias3-microvolt = <1800000>;
+        qcom,micbias4-microvolt = <1800000>;
+        qcom,hphl-jack-type-normally-closed;
+        qcom,ground-jack-type-normally-closed;
+        qcom,mbhc-buttons-vthreshold-microvolt = <75000 150000 237000 500000 500000 500000 500000 500000>;
+        qcom,mbhc-headphone-vthreshold-microvolt = <50000>;
+    };
+
+    /* ... */
+
+    soundwire@3210000 {
+        #address-cells = <2>;
+        #size-cells = <0>;
+        reg = <0x03210000 0x2000>;
+        wcd939x_rx: codec@0,4 {
+            compatible = "sdw20217010e00";
+            reg  = <0 4>;

Just one space before '='

Ack


+            qcom,rx-port-mapping = <1 2 3 4 5 6>;
+        };
+    };
+
+    soundwire@3230000 {
+        #address-cells = <2>;
+        #size-cells = <0>;
+        reg = <0x03230000 0x2000>;
+        wcd938x_tx: codec@0,3 {
+            compatible = "sdw20217010e00";
+            reg  = <0 3>;

Ditto

Ack

Thanks,
Neil



Best regards,
Krzysztof






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