[PATCH 1/2] dt-bindings: usb: Add onsemi FUSB15201 Type-C and PD controller

[Shawn Guo <shengchao.guo@oss.qualcomm.com>]

The FUSB15201 is an autonomous dual-port USB Type-C and Power Delivery
controller. It runs the Type-C state machine and the Power Delivery
policy engine on an integrated microcontroller, and exposes only a
status and command interface over I2C, so it is not a TCPC.

Describe the two ports as addressed connector child nodes, so that a
board which wires up only one of them can describe just that one.

Assisted-by: LLM
Signed-off-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
---
 .../bindings/usb/onnn,fusb15201.yaml          | 152 ++++++++++++++++++
 1 file changed, 152 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/onnn,fusb15201.yaml

diff --git a/Documentation/devicetree/bindings/usb/onnn,fusb15201.yaml b/Documentation/devicetree/bindings/usb/onnn,fusb15201.yaml
new file mode 100644
index 000000000000..09f2e964d3ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/onnn,fusb15201.yaml
@@ -0,0 +1,152 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/onnn,fusb15201.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: onsemi FUSB15201 dual-port Type-C and Power Delivery controller
+
+maintainers:
+  - Shawn Guo <shengchao.guo@oss.qualcomm.com>
+
+description:
+  The FUSB15201 is an autonomous dual-port USB Type-C and Power Delivery
+  controller. It runs the Type-C state machine and the Power Delivery policy
+  engine on an integrated microcontroller, so the host is not involved in
+  Power Delivery messaging. Over I2C it reports the attach state, CC
+  orientation, data and power roles, faults and the VBUS voltage of each of
+  its two ports, and accepts commands to initiate data and power role swaps.
+
+  The two ports are described as connector child nodes, addressed 0 for port A
+  and 1 for port B. A board that wires up only one of the two ports describes
+  only the corresponding connector.
+
+properties:
+  compatible:
+    const: onnn,fusb15201
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+    description:
+      Interrupt line shared by both ports, driven by the I2C_INT pin. The pin
+      is active low and stays asserted until every pending interrupt has been
+      cleared, so it has to be described as level triggered.
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+patternProperties:
+  '^connector@[01]$':
+    type: object
+    $ref: /schemas/connector/usb-connector.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      compatible:
+        const: usb-c-connector
+
+      reg:
+        maximum: 1
+        description:
+          0 for port A, 1 for port B.
+
+    required:
+      - reg
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - '#address-cells'
+  - '#size-cells'
+
+anyOf:
+  - required: [connector@0]
+  - required: [connector@1]
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        typec@50 {
+            compatible = "onnn,fusb15201";
+            reg = <0x50>;
+            interrupts-extended = <&pmic_gpios 8 IRQ_TYPE_LEVEL_LOW>;
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            connector@0 {
+                compatible = "usb-c-connector";
+                reg = <0>;
+                label = "USB-C0";
+                power-role = "dual";
+                data-role = "dual";
+                try-power-role = "sink";
+
+                ports {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    port@0 {
+                        reg = <0>;
+
+                        endpoint {
+                            remote-endpoint = <&usb_0_dwc3_hs>;
+                        };
+                    };
+
+                    port@1 {
+                        reg = <1>;
+
+                        endpoint {
+                            remote-endpoint = <&usb_0_qmpphy_ss>;
+                        };
+                    };
+                };
+            };
+
+            connector@1 {
+                compatible = "usb-c-connector";
+                reg = <1>;
+                label = "USB-C1";
+                power-role = "dual";
+                data-role = "dual";
+                try-power-role = "sink";
+
+                ports {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    port@0 {
+                        reg = <0>;
+
+                        endpoint {
+                            remote-endpoint = <&usb_1_dwc3_hs>;
+                        };
+                    };
+
+                    port@1 {
+                        reg = <1>;
+
+                        endpoint {
+                            remote-endpoint = <&usb_1_qmpphy_ss>;
+                        };
+                    };
+                };
+            };
+        };
+    };
+...
-- 
2.43.0