[PATCH v3 1/1] dt-bindings: soc: add vf610 reboot syscon controller

[Frank Li]

Add vf610 reboot controller, which used to reboot whole system. Fix below
CHECK_DTB warnings:

arch/arm/boot/dts/nxp/vf/vf610-bk4.dtb: /soc/bus at 40000000/src at 4006e000:
    failed to match any schema with compatible: ['fsl,vf610-src', 'syscon']

IC reference manual calls it as system reset controller(SRC), but it is not
module as reset controller, which used to reset individual device. SRC
works as reboot controller, which reboots whole system. It provides a
syscon interface to syscon-reboot.

Signed-off-by: Frank Li <Frank.Li at nxp.com>
---
change in v3
- add missed 's' at description
- remove duplicate / at path

Change in v2
- change description to avoid confuse about reset controller.
- it is legacy device, more than 10 year. So try keep existed dts as it.
---
 .../bindings/soc/fsl/fsl,vf610-src.yaml       | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/fsl/fsl,vf610-src.yaml

diff --git a/Documentation/devicetree/bindings/soc/fsl/fsl,vf610-src.yaml b/Documentation/devicetree/bindings/soc/fsl/fsl,vf610-src.yaml
new file mode 100644
index 0000000000000..6fb93e8be9292
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/fsl/fsl,vf610-src.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/fsl/fsl,vf610-src.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale vf610 System Reset Controller (SRC)
+
+maintainers:
+  - Frank Li <Frank.Li at nxp.com>
+
+description:
+  IC reference manual calls it as SRC, but it is not module as reset
+  controller, which used to reset individual device. SRC works as reboot
+  controller, which reboots whole system. It provides a syscon interface to
+  syscon-reboot.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - fsl,vf610-src
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    syscon at 4006e000 {
+        compatible = "fsl,vf610-src", "syscon";
+        reg = <0x4006e000 0x1000>;
+        interrupts = <96 IRQ_TYPE_LEVEL_HIGH>;
+    };
+
-- 
2.34.1