[PATCH 1/2] dt-bindings: mfd: Add Realtek switch

[Chris Packham <chris.packham@alliedtelesis.co.nz>]

Add device tree schema for the Realtek switch. Currently the only
supported feature is the syscon-reboot which is needed to be able to
reboot the board.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---
 .../bindings/mfd/realtek,switch.yaml          | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/realtek,switch.yaml

diff --git a/Documentation/devicetree/bindings/mfd/realtek,switch.yaml b/Documentation/devicetree/bindings/mfd/realtek,switch.yaml
new file mode 100644
index 000000000000..84b57f87bd3a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/realtek,switch.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/realtek,switch.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek Switch with Internal CPU
+
+description:
+  The RTL9302 ethernet switch has an internal CPU. The switch is a multi-port
+  networking switch that supports many interfaces. Additionally, the device can
+  support MDIO, SPI and I2C busses.
+
+maintainers:
+  - Chris Packham <chris.packham@alliedtelesis.co.nz>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - realtek,rtl9302c-switch
+      - const: syscon
+      - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  reboot:
+    $ref: /schemas/power/reset/syscon-reboot.yaml#
+
+required:
+  - compatible
+  - reg
+  - reboot
+
+additionalProperties: false
+
+examples:
+  - |
+    switch0: ethernet-switch@1b000000 {
+      compatible = "realtek,rtl9302c-switch", "syscon", "simple-mfd";
+      reg = <0x1b000000 0x10000>;
+
+      reboot {
+        compatible = "syscon-reboot";
+        offset = <0x0c>;
+        value = <0x01>;
+      };
+    };
+
-- 
2.46.0