[PATCH 04/18] dt-bindings: mfd: Add bindings for sl28cpld

[Michael Walle <michael@walle.cc>]

This adds device tree bindings for the board management controller found
on the Kontron SMARC-sAL28 board.

Signed-off-by: Michael Walle <michael@walle.cc>
---
 .../bindings/mfd/kontron,sl28cpld.yaml        | 143 ++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml

diff --git a/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml b/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml
new file mode 100644
index 000000000000..3b9cca49d2d6
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/kontron,sl28cpld.yaml
@@ -0,0 +1,143 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/kontron,sl28cpld.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kontron's sl28cpld board management controller
+
+maintainers:
+  - Michael Walle <michael@walle.cc>
+
+description: |
+  The board management controller may contain different IP blocks like
+  watchdog, fan monitoring, PWM controller, interrupt controller and a
+  GPIO controller.
+
+properties:
+  compatible:
+    const: kontron,sl28cpld
+
+  reg:
+    description:
+      I2C device address.
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+  "#interrupt-cells":
+    const: 2
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+patternProperties:
+  "^gp(io|i|o)(@[0-9]+)?$":
+    $ref: ../gpio/kontron,sl28cpld-gpio.yaml
+
+  "^hwmon(@[0-9]+)?$":
+    $ref: ../hwmon/kontron,sl28cpld-hwmon.yaml
+
+  "^pwm(@[0-9]+)?$":
+    $ref: ../pwm/kontron,sl28cpld-pwm.yaml
+
+  "^watchdog(@[0-9]+)?$":
+    $ref: ../watchdog/kontron,sl28cpld-wdt.yaml
+
+required:
+  - "#address-cells"
+  - "#size-cells"
+  - compatible
+  - reg
+  - "#interrupt-cells"
+  - interrupt-controller
+
+oneOf:
+  - required:
+    - interrupts
+  - required:
+    - interrupts-extended
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        sl28cpld@4a {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            compatible = "kontron,sl28cpld";
+            reg = <0x4a>;
+            interrupts-extended = <&gpio2 6 IRQ_TYPE_EDGE_FALLING>;
+
+            #interrupt-cells = <2>;
+            interrupt-controller;
+
+            gpio@0 {
+                compatible = "kontron,sl28cpld-gpio";
+                reg = <0>;
+
+                gpio-controller;
+                #gpio-cells = <2>;
+
+                interrupt-controller;
+                #interrupt-cells = <2>;
+            };
+
+            gpio@1 {
+                compatible = "kontron,sl28cpld-gpio";
+                reg = <1>;
+
+                gpio-controller;
+                #gpio-cells = <2>;
+
+                interrupt-controller;
+                #interrupt-cells = <2>;
+            };
+
+            gpo {
+                compatible = "kontron,sl28cpld-gpo";
+
+                gpio-controller;
+                #gpio-cells = <2>;
+                gpio-line-names = "a", "b", "c";
+            };
+
+            gpi {
+                compatible = "kontron,sl28cpld-gpi";
+
+                gpio-controller;
+                #gpio-cells = <2>;
+            };
+
+            hwmon {
+                compatible = "kontron,sl28cpld-fan";
+            };
+
+            pwm@0 {
+                compatible = "kontron,sl28cpld-pwm";
+                reg = <0>;
+                #pwm-cells = <2>;
+            };
+
+            pwm@1 {
+                compatible = "kontron,sl28cpld-pwm";
+                reg = <1>;
+                #pwm-cells = <2>;
+            };
+
+            watchdog {
+                compatible = "kontron,sl28cpld-wdt";
+            };
+        };
+    };
-- 
2.20.1