schemas: gpio: Add gpio-line schema and gpio-line-name for hogs

dtschema/dtb.py

@@ -415,7 +415,7 @@ def fixup_phandles(validator, dt, path=''):
 
 
 def fixup_gpios(dt):
-    if 'gpio-hog' in dt:
+    if 'gpio-hog' in dt or 'gpio-line' in dt:
         return
     for k, v in dt.items():
         if isinstance(v, dict):

dtschema/schemas/gpio/gpio-consumer.yaml

@@ -12,10 +12,11 @@ description: Schema for GPIO consumer devicetree bindings
 maintainers:
   - Rob Herring <robh@kernel.org>
 
-# do not select this schema for GPIO hogs
+# do not select this schema for GPIO hog/line child nodes
 select:
   properties:
     gpio-hog: false
+    gpio-line: false
 
 properties:
   gpios:

dtschema/schemas/gpio/gpio-hog.yaml

@@ -36,6 +36,9 @@ properties:
   line-name:
     $ref: /schemas/types.yaml#/definitions/string
 
+  gpio-line-name:
+    $ref: /schemas/types.yaml#/definitions/string
+
   output-high:
     $ref: /schemas/types.yaml#/definitions/flag
 

dtschema/schemas/gpio/gpio-line.yaml

@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/gpio-line.yaml#
+$schema: http://devicetree.org/meta-schemas/base.yaml#
+
+title: GPIO Line Nodes
+
+description: Schema for GPIO line initialization devicetree bindings
+
+maintainers:
+  - Rob Herring <robh@kernel.org>
+
+# select this schema for GPIO line setup nodes
+select:
+  properties:
+    gpio-line: true
+
+  required:
+    - gpio-line
+
+properties:
+  $nodename:
+    pattern: "-line(-[0-9]+)?$"
+
+  gpio-line:
+    $ref: /schemas/types.yaml#/definitions/flag
+
+  gpios:
+    $ref: /schemas/types.yaml#/definitions/uint32-matrix
+
+  input:
+    $ref: /schemas/types.yaml#/definitions/flag
+
+  output-high:
+    $ref: /schemas/types.yaml#/definitions/flag
+
+  output-low:
+    $ref: /schemas/types.yaml#/definitions/flag
+
+  gpio-line-name:
+    $ref: /schemas/types.yaml#/definitions/string
+
+required:
+  - gpio-line
+  - gpios
+
+additionalProperties: false