[PATCH 05/16] dt-bindings: usb: add FUSB340 switch binding

[Fabrice Gasnier]

Document the ON Semiconductor FUSB340 SuperSpeed switch as a USB switch
binding with enable-gpios and select-gpios controls. The switch can be used
in Type-C applications where a reversible cable requires a switch.

Assisted-by: GitHub-Copilot:GPT-5.4-mini
Signed-off-by: Fabrice Gasnier <fabrice.gasnier at foss.st.com>
---
 .../devicetree/bindings/usb/onnn,fusb340.yaml      | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/onnn,fusb340.yaml b/Documentation/devicetree/bindings/usb/onnn,fusb340.yaml
new file mode 100644
index 000000000000..b1991bd465ad
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/onnn,fusb340.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/onnn,fusb340.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ON Semiconductor FUSB340 SuperSpeed switch
+
+maintainers:
+  - Fabrice Gasnier <fabrice.gasnier at foss.st.com>
+
+description:
+  The FUSB340 is a 2:1 USB 3.1 SuperSpeed data switch with enable and select
+  GPIO control signals. The switch can be used in Type-C applications where a
+  reversible cable requires a switch.
+
+properties:
+  compatible:
+    const: onnn,fusb340
+
+  enable-gpios:
+    description: Switch enable GPIO
+
+  select-gpios:
+    description: Switch path select GPIO
+
+  mode-switch: true
+  orientation-switch: true
+
+required:
+  - compatible
+  - enable-gpios
+  - select-gpios
+  - mode-switch
+  - orientation-switch
+
+allOf:
+  - $ref: usb-switch.yaml#
+  - $ref: usb-switch-ports.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    usb-switch {
+        compatible = "onnn,fusb340";
+        enable-gpios = <&gpioh 2 GPIO_ACTIVE_LOW>;
+        select-gpios = <&gpioh 3 GPIO_ACTIVE_HIGH>;
+        mode-switch;
+        orientation-switch;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port at 0 {
+                reg = <0>;
+                usb_con_ss: endpoint {
+                    remote-endpoint = <&typec_con_ss>;
+                };
+            };
+
+            port at 1 {
+                reg = <1>;
+                usb_phy_ss: endpoint {
+                    remote-endpoint = <&usb_phy_ss>;
+                };
+            };
+        };
+    };
+...

-- 
2.43.0