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Date:   Thu, 31 Dec 2020 20:39:45 +0800
From:   Campion Kang <campion.kang@...antech.com.tw>
To:     <linux-kernel@...r.kernel.org>, Lee Jones <lee.jones@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        <linux-hwmon@...r.kernel.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        <linux-watchdog@...r.kernel.org>,
        AceLan Kao <chia-lin.kao@...onical.com>,
        Campion Kang <campion.kang@...antech.com.tw>
Subject: [PATCH v5 3/6] dt-bindings: mfd: ahc1ec0.yaml: Add Advantech embedded controller - AHC1EC0

Add DT binding schema for Advantech embedded controller AHC1EC0.

Signed-off-by: Campion Kang <campion.kang@...antech.com.tw>
---
 .../devicetree/bindings/mfd/ahc1ec0.yaml      | 69 +++++++++++++++++++
 1 file changed, 69 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..da57d782ea77
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/ahc1ec0.yaml
@@ -0,0 +1,69 @@
+# 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@...antech.com.tw>
+
+description: |
+  AHC1EC0 is one of the embedded controllers used by Advantech to provide several
+  functions such as watchdog, hwmon, brightness, etc. Advantech related applications
+  can control the whole system via these functions.
+
+properties:
+  compatible:
+    const: advantech,ahc1ec0
+
+  advantech,sub-dev-nb:
+    description:
+      The number of sub-devices specified in the platform.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maxItems: 1
+
+  advantech,sub-dev:
+    description:
+      A list of the sub-devices supported in the platform. Defines for the
+      appropriate values can found in dt-bindings/mfd/ahc1ec0.h.
+    $ref: "/schemas/types.yaml#/definitions/uint32-array"
+    minItems: 1
+    maxItems: 6
+
+  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.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maxItems: 1
+
+required:
+  - compatible
+  - advantech,sub-dev-nb
+  - advantech,sub-dev
+
+if:
+  properties:
+    advantech,sub-dev:
+      contains:
+        const: 0x3
+then:
+  required:
+    - advantech,hwmon-profile
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/mfd/ahc1ec0.h>
+    ahc1ec0 {
+        compatible = "advantech,ahc1ec0";
+
+        advantech,sub-dev-nb = <2>;
+        advantech,sub-dev = <AHC1EC0_SUBDEV_HWMON
+                             AHC1EC0_SUBDEV_WDT>;
+
+        advantech,hwmon-profile = <AHC1EC0_HWMON_PRO_UNO2271G>;
+    };
-- 
2.17.1

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