[PATCH v3 5/7] dt-bindings: mfd: Add synology,microp device

[Markus Probst via B4 Relay <devnull+markus.probst.posteo.de@kernel.org>]

From: Markus Probst <markus.probst@posteo.de>

Add the Synology Microp devicetree bindings. Those devices are
microcontrollers found on Synology NAS devices. They are connected to a
serial port on the host device.

Those devices are used to control certain LEDs, fan speeds, a beeper, to
handle buttons, fan failures and to properly shutdown and reboot the
device.

Signed-off-by: Markus Probst <markus.probst@posteo.de>
---
 .../devicetree/bindings/leds/synology,microp.yaml  | 40 +++++++++++++++++
 .../devicetree/bindings/mfd/synology,microp.yaml   | 51 ++++++++++++++++++++++
 2 files changed, 91 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/synology,microp.yaml b/Documentation/devicetree/bindings/leds/synology,microp.yaml
new file mode 100644
index 000000000000..f7bf32c240f7
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/synology,microp.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/synology,microp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synology NAS on-board Microcontroller LEDs
+
+maintainers:
+  - Markus Probst <markus.probst@posteo.de>
+
+description: |
+  This is part of device tree bindings for Synology NAS on-board
+  Microcontroller.
+
+  This device can manage up to 4 leds in Synology NAS devices:
+  - Power
+  - Status
+  - Alert
+  - USB
+
+  The Power and Status LEDs are available on every Synology NAS model,
+  therefore the associated child nodes are mandatory. If the NAS also has
+  a alert or usb led, the associated child nodes need to be added.
+
+properties:
+  compatible:
+    const: synology,microp-leds
+
+patternProperties:
+  "^(power|status|alert|usb)-led$":
+    $ref: /schemas/leds/common.yaml
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - power-led
+  - status-led
+
+additionalProperties: false
diff --git a/Documentation/devicetree/bindings/mfd/synology,microp.yaml b/Documentation/devicetree/bindings/mfd/synology,microp.yaml
new file mode 100644
index 000000000000..57bb986d24f7
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/synology,microp.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/synology,microp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synology NAS on-board Microcontroller
+
+maintainers:
+  - Markus Probst <markus.probst@posteo.de>
+
+description: |
+  Synology Microp is a microcontroller found in Synology NAS devices.
+  It is connected to a serial port on the host device.
+
+  It is a multifunction device with the following sub modules:
+  - LEDs
+
+properties:
+  compatible:
+    const: synology,microp
+
+  leds:
+    $ref: /schemas/leds/synology,microp.yaml
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    mcu {
+      compatible = "synology,microp";
+
+      leds {
+        compatible = "synology,microp-leds";
+
+        power-led {
+          color = <LED_COLOR_ID_BLUE>;
+          function = LED_FUNCTION_POWER;
+        };
+
+        status-led {
+          color = <LED_COLOR_ID_MULTI>;
+          function = LED_FUNCTION_STATUS;
+        };
+      };
+    };

-- 
2.52.0