schemas: add SDRAM consumer

Add a new SDRAM consumer bindings.
Some peripherals may need to reference SDRAM channel, create the
"memory-channel" to allow it.

Signed-off-by: Clément Le Goffic <[email protected]>

Author: Upsylonbare

dtschema/schemas/sdram/sdram-consumer.yaml

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: BSD-2-Clause
+# Copyright Clément Le Goffic <[email protected]>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sdram/sdram-consumer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SDRAM channel consumer properties
+
+maintainers:
+  - Clément Le Goffic <[email protected]>
+
+select: true
+
+properties:
+  memory-channel:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to a memory channel node. This property references a node that
+      represents a SDRAM channel.
+
+additionalProperties: true