[PATCH v7 3/7] dt-bindings: mfd: ahc1ec0.yaml: Add Advantech embedded controller - AHC1EC0

[Campion Kang]

Add DT binding schema for Advantech embedded controller AHC1EC0.

Changed in v7:
	Fix the patch according to reviewer's comment:
	-remove inappropriate attributes: sub-dev-nb, sub-dev

Changed in v6:
	-rename dt-bindings/mfd/ahc1ec0.h to dt-bindings/mfd/ahc1ec0-dt.h
	 that found errors by bot 'make dt_binding_check'

Signed-off-by: Campion Kang <campion.kang@xxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/mfd/ahc1ec0.yaml      | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/ahc1ec0.yaml

diff --git a/Documentation/devicetree/bindings/mfd/ahc1ec0.yaml b/Documentation/devicetree/bindings/mfd/ahc1ec0.yaml
new file mode 100644
index 000000000000..1bc96933ce29
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/ahc1ec0.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/ahc1ec0.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Advantech Embedded Controller (AHC1EC0)
+
+maintainers:
+  - Campion Kang <campion.kang@xxxxxxxxxxxxxxxx>
+
+description: |
+  AHC1EC0 is one of the embedded controllers used by Advantech to provide several
+  functions such as watchdog, hwmon, brightness, GPIO, LED, etc. Advantech related
+  applications can control the whole system via these functions.
+
+properties:
+  compatible:
+    const: advantech,ahc1ec0
+
+  advantech,hwmon-profile:
+    description:
+      The number of sub-devices specified in the platform. Defines for the
+      hwmon profiles can found in dt-bindings/mfd/ahc1ec0-dt.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maxItems: 1
+
+  advantech,has-watchdog:
+    description:
+      Some implementations of the EC include a watchdog used to monitor the
+      system. This boolean flag is used to specify whether this watchdog is
+      present or not. Default is true, otherwise set to false.
+    type: boolean
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/mfd/ahc1ec0-dt.h>
+    ahc1ec0 {
+        compatible = "advantech,ahc1ec0";
+
+        advantech,hwmon-profile = <AHC1EC0_HWMON_PRO_UNO2271G>;
+        advantech,has-watchdog;
+    };
-- 
2.17.1