dt-bindings: leds: pca955x: Convert text bindings to YAML

Convert the text bindings of pca955x to YAML so it could be used to
validate the DTS.

Signed-off-by: Ricky CX Wu <[email protected]>
Signed-off-by: Delphine CC Chiu <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: RickyWu0919

Documentation/devicetree/bindings/leds/leds-pca955x.txt

@@ -0,0 +1,158 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/nxp,pca955x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP PCA955X LED controllers
+
+maintainers:
+  - Nate Case <[email protected]>
+
+description: |
+  The PCA955x family of chips are I2C LED blinkers whose pins not used
+  to control LEDs can be used as general purpose I/Os. The GPIO pins can
+  be input or output, and output pins can also be pulse-width controlled.
+
+  For more product information please see the link below:
+  - https://www.nxp.com/docs/en/data-sheet/PCA9552.pdf
+
+properties:
+  compatible:
+    enum:
+      - nxp,pca9550
+      - nxp,pca9551
+      - nxp,pca9552
+      - ibm,pca9552
+      - nxp,pca9553
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+  gpio-controller: true
+
+  gpio-line-names:
+    minItems: 1
+    maxItems: 16
+
+  "#gpio-cells":
+    const: 2
+
+patternProperties:
+  "^led@[0-9a-f]$":
+    type: object
+    $ref: common.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        maxItems: 1
+      type:
+        description: |
+          Output configuration, see include/dt-bindings/leds/leds-pca955x.h
+        $ref: /schemas/types.yaml#/definitions/uint32
+        default: 0
+        minimum: 0
+        maximum: 2
+
+    required:
+      - reg
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nxp,pca9550
+    then:
+      patternProperties:
+        "^led@[0-9a-f]$":
+          properties:
+            reg:
+              maximum: 1
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nxp,pca9551
+    then:
+      patternProperties:
+        "^led@[0-9a-f]$":
+          properties:
+            reg:
+              maximum: 7
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nxp,pca9552
+              - ibm,pca9552
+    then:
+      patternProperties:
+        "^led@[0-9a-f]$":
+          properties:
+            reg:
+              maximum: 15
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nxp,pca9553
+    then:
+      patternProperties:
+        "^led@[0-9a-f]$":
+          properties:
+            reg:
+              maximum: 3
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/leds/leds-pca955x.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led-controller@60 {
+            compatible = "nxp,pca9552";
+            reg = <0x60>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            led@0 {
+                reg = <0>;
+                label = "red:power";
+                linux,default-trigger = "default-on";
+                type = <PCA955X_TYPE_LED>;
+            };
+            led@1 {
+                reg = <1>;
+                label = "green:power";
+                type = <PCA955X_TYPE_LED>;
+            };
+            led@2 {
+                reg = <2>;
+                label = "pca9552:yellow";
+                type = <PCA955X_TYPE_LED>;
+            };
+            led@3 {
+                reg = <3>;
+                label = "pca9552:white";
+                type = <PCA955X_TYPE_LED>;
+            };
+        };
+    };
+
+...