[PATCH v2 1/2] dt-bindings: usb: Add ITE IT885x support

[Amber Kao <amber.kao@ite.com.tw>]

Add device tree binding documentation for the ITE IT885x. The ITE
IT885x is an I2C-based USB Type-C Power Delivery (PD) controller.

v1 -> v2:
- Per Conor/Sashiko: dropped the redundant `gpios` property, the
  interrupt line is already described via `interrupts`
- Per Conor: renamed example node from `itepd@40` to `typec@40`

Cc: Yaode Fang <Yaode.Fang@ite.com.tw>
Cc: Jeson Yang <jeson.yang@ite.com.tw>
Cc: Bling Chiang <Bling.Chiang@ite.com.tw>
Cc: Eric Su <Eric.Su@ite.com.tw>
Cc: Doreen Lin <doreen.lin@ite.com.tw>
Signed-off-by: Amber Kao <amber.kao@ite.com.tw>

---
v1: https://lore.kernel.org/all/20260615-ucsi-itepd-feature-v1-0-a826cfd0df6a@ite.com.tw/
---
 .../devicetree/bindings/usb/ite,itepd-it885x.yaml  | 105 +++++++++++++++++++++
 MAINTAINERS                                        |  11 +++
 2 files changed, 116 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/ite,itepd-it885x.yaml b/Documentation/devicetree/bindings/usb/ite,itepd-it885x.yaml
new file mode 100644
index 000000000000..0a292a8e72cd
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ite,itepd-it885x.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/ite,itepd-it885x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ITE IT885x USB Type-C Power Delivery Controller
+
+maintainers:
+  - Jeson Yang <jeson.yang@ite.com.tw>
+
+description:
+  The ITE IT885x is an I2C-based USB Type-C Power Delivery (PD) controller.
+
+properties:
+  compatible:
+    const: ite,itepd-it885x
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  wakeup-source: true
+
+  pinctrl-names:
+    minItems: 1
+
+  pinctrl-0: true
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+patternProperties:
+  "^connector(@[0-9a-f]+)?$":
+    $ref: /schemas/connector/usb-connector.yaml#
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        typec@40 {
+            compatible = "ite,itepd-it885x";
+            reg = <0x40>;
+            interrupts-extended = <&tlmm 129 IRQ_TYPE_EDGE_FALLING>;
+            wakeup-source;
+
+            pinctrl-names = "default";
+            pinctrl-0 = <&itepd_int_default>;
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            connector@0 {
+                compatible = "usb-c-connector";
+                reg = <0>;
+                label = "USB-C";
+                power-role = "dual";
+                data-role = "dual";
+
+                ports {
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    port@0 {
+                        reg = <0>;
+                        endpoint {
+                            remote-endpoint = <&eud_con>;
+                        };
+                    };
+
+                    port@1 {
+                        reg = <1>;
+                        endpoint {
+                            remote-endpoint = <&redriver_ss_out>;
+                        };
+                    };
+
+                    port@2 {
+                        reg = <2>;
+                        endpoint {
+                            remote-endpoint = <&fsa4480_sbu_mux>;
+                        };
+                    };
+                };
+            };
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 461a3eed6129..1b03fa3aa060 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13720,6 +13720,17 @@ T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	Documentation/devicetree/bindings/display/bridge/ite,it66121.yaml
 F:	drivers/gpu/drm/bridge/ite-it66121.c
 
+ITE IT885x TYPE-C PD CONTROLLER DRIVER
+M:	Jeson Yang <jeson.yang@ite.com.tw>
+M:	Amber Kao <amber.kao@ite.com.tw>
+R:	Yaode Fang <Yaode.Fang@ite.com.tw>
+R:	Bling Chiang <Bling.Chiang@ite.com.tw>
+R:	Doreen Lin <doreen.lin@ite.com.tw>
+R:	Eric Su <Eric.Su@ite.com.tw>
+L:	linux-usb@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/usb/ite,itepd-it885x.yaml
+
 IVTV VIDEO4LINUX DRIVER
 M:	Andy Walls <awalls@md.metrocast.net>
 L:	linux-media@vger.kernel.org

-- 
2.53.0