2 files changed, 76 insertions, 0 deletions
diff --git a/zephyr/dts/bindings/gpio/cros,ioex-chip.yaml b/zephyr/dts/bindings/gpio/cros,ioex-chip.yaml
new file mode 100644
index 0000000000..8ab297b035
--- /dev/null
+++ b/zephyr/dts/bindings/gpio/cros,ioex-chip.yaml
@@ -0,0 +1,50 @@
+description: IEOX chip definition
+
+compatible: "cros,ioex-chip"
+
+include: [base.yaml]
+
+properties:
+    i2c-port:
+      type: phandle
+      description:
+        Handle to the i2c named-port containing the IO expander chip
+
+    i2c-addr:
+      type: int
+      required: true
+      description:
+        I2C address of chip
+
+    flags:
+      type: int
+      required: true
+      description:
+        Value which represents IOEX_FLAGS_* or other internal flags
+        for IO expander chip.
+
+    drv:
+      type: string
+      required: true
+      description:
+        CrOS EC driver used to communicate with chip
+      enum:
+        - "ccgxxf_ioexpander_drv"
+        - "it8801_ioexpander_drv"
+        - "nct38xx_ioexpander_drv"
+        - "pca9675_ioexpander_drv"
+        - "pcal6408_ioexpander_drv"
+        - "tca64xxa_ioexpander_drv"
+
+    int-gpios:
+      type: phandle-array
+      required: false
+      description:
+        GPIO connected to the interrupt output signal of IO expander chip
+
+    "#address-cells":
+      required: true
+      const: 1
+    "#size-cells":
+      required: true
+      const: 0
+\ No newline at end of file
diff --git a/zephyr/dts/bindings/gpio/cros,ioex-port.yaml b/zephyr/dts/bindings/gpio/cros,ioex-port.yaml
new file mode 100644
index 0000000000..bde3fde1ac
--- /dev/null
+++ b/zephyr/dts/bindings/gpio/cros,ioex-port.yaml
@@ -0,0 +1,26 @@
+description: IEOX port definition
+
+compatible: "cros,ioex-port"
+
+include: [gpio-controller.yaml, base.yaml]
+
+properties:
+    reg:
+      required: true
+      description:
+        Number of port within IO expander
+
+    "#gpio-cells":
+      required: true
+      const: 2
+      description:
+        Number of parameters describing the pin
+
+    ngpios:
+      required: true
+      description:
+        Number of pins per port
+
+gpio-cells:
+  - pin
+  - flags
+\ No newline at end of file