Re: [PATCH v4 09/18] dt-bindings: usb: Add Qualcomm PMIC TCPM YAML schema

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On 19/03/2023 11:58, Krzysztof Kozlowski wrote:
+
+maintainers:
+  - Bryan O'Donoghue<bryan.odonoghue@xxxxxxxxxx>
+
+description: |
+  Qualcomm PMIC Virtual Type-C Port Manager Driver
+  A virtual device which manages Qualcomm PMIC provided Type-C port and
+  Power Delivery in one place.
OK, so it looks like bindings for driver, so a no-go. Unless there is
such device as "manager", this does not look like hardware description.

+
+properties:
+  compatible:
+    const: qcom,pmic-virt-tcpm
+
+  connector:
+    type: object
+    $ref: /schemas/connector/usb-connector.yaml#
+    unevaluatedProperties: false
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description:
+      Contains a port which consumes data-role switching messages.
+
+  qcom,pmic-typec:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      A phandle to the typec port hardware driver.
+
+  qcom,pmic-pdphy:
+    $ref: /schemas/types.yaml#/definitions/phandle
Having typec and phy as phandles - not children - also suggests this is
some software construct, not hardware description.

So probably I didn't interpret Rob's comment correctly here.

For a pure software device - a virtual device - there should be no dts representation at all - not even at the firmware{}, chosen{}, rpm{} level, it wouldn't be possible/acceptable to have a tcpm {} with a compat pointing to the two phandles I have here ?

---
bod





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