linux-kernel - [PATCH v4 2/6] dt-bindings: usb: Add Qualcomm PMIC type C controller dt-binding

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Message-Id: <20200626185516.18018-3-wcheng@codeaurora.org>
Date:   Fri, 26 Jun 2020 11:55:12 -0700
From:   Wesley Cheng <wcheng@...eaurora.org>
To:     heikki.krogerus@...ux.intel.com, agross@...nel.org,
        mark.rutland@....com, bjorn.andersson@...aro.org,
        gregkh@...uxfoundation.org, broonie@...nel.org,
        lgirdwood@...il.com, robh+dt@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-usb@...r.kernel.org,
        jackp@...eaurora.org, rdunlap@...radead.org,
        Wesley Cheng <wcheng@...eaurora.org>
Subject: [PATCH v4 2/6] dt-bindings: usb: Add Qualcomm PMIC type C controller dt-binding

Introduce the dt-binding for enabling USB type C orientation and role
detection using the PM8150B.  The driver will be responsible for receiving
the interrupt at a state change on the CC lines, reading the orientation/role,
and communicating this information to the remote clients, which can include
a role switch node and a type C switch.

Signed-off-by: Wesley Cheng <wcheng@...eaurora.org>
---
 .../bindings/usb/qcom,pmic-typec.yaml         | 126 ++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml

diff --git a/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
new file mode 100644
index 000000000000..6714fb2e6b08
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/qcom,pmic-typec.yaml
@@ -0,0 +1,126 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/usb/qcom,pmic-typec.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Qualcomm PMIC based USB type C Detection Driver
+
+maintainers:
+  - Wesley Cheng <wcheng@...eaurora.org>
+
+description: |
+  Qualcomm PMIC Type C Detect
+
+properties:
+  compatible:
+    enum:
+      - qcom,pm8150b-usb-typec
+
+  reg:
+    maxItems: 1
+    description: Type C base address
+
+  interrupts:
+    maxItems: 1
+    description: CC change interrupt from PMIC
+
+  connector:
+    description: Connector type for remote endpoints
+    type: object
+    $ref: /schemas/connector/usb-connector.yaml#
+
+    properties:
+      compatible:
+        enum:
+          - usb-c-connector
+
+      power-role:
+       enum:
+         - dual
+         - source
+         - sink
+
+      data-role:
+        enum:
+          - dual
+          - host
+          - device
+
+      ports:
+        description: Remote endpoint connections
+        type: object
+
+        properties:
+          port@0:
+            description: Remote endpoints for the High Speed path
+            type: object
+
+          port@1:
+            description: Remote endpoints for the Super Speed path
+            type: object
+
+            properties:
+              endpoint@0:
+                description: Connection to USB type C mux node
+                type: object
+
+                properties:
+                  remote-endpoint:
+                    maxItems: 1
+                    description: Node reference to the type C mux
+
+              endpoint@1:
+                description: Connection to role switch node
+                type: object
+
+                properties:
+                  remote-endpoint:
+                    maxItems: 1
+                    description: Node reference to the role switch node
+
+    required:
+      - compatible
+
+required:
+  - compatible
+  - interrupts
+  - connector
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    pm8150b {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        pm8150b_typec: typec@...0 {
+            compatible = "qcom,pm8150b-usb-typec";
+            reg = <0x1500>;
+            interrupts = <0x2 0x15 0x5 IRQ_TYPE_EDGE_RISING>;
+
+            connector {
+                compatible = "usb-c-connector";
+                power-role = "dual";
+                data-role = "dual";
+                ports {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+                    port@0 {
+                        reg = <0>;
+                    };
+                    port@1 {
+                        reg = <1>;
+                        usb3_data_ss: endpoint@0 {
+                            remote-endpoint = <&qmp_ss_mux>;
+                        };
+                        usb3_role: endpoint@1 {
+                            remote-endpoint = <&dwc3_drd_switch>;
+                        };
+                    };
+                };
+            };
+        };
+    };
+...
-- 
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