[PATCH v2 1/6] dt-bindings: display: bridge: Add YAML schema for Synopsys DW-HDMI

[Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>]

Add a .yaml schema containing the common properties for the Synopsys
DesignWare HDMI TX controller. This isn't a full device tree binding
specification, but is meant to be referenced by platform-specific
bindings for the IP core.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
Changes since v1:

- Add default to reg-io-width property
- Add additionalProperties
- Rebase on top of OF graph schema, dropped redundant properties
- Drop cec clock as it's device-specific
- Increase max clocks to 5 to accommodate the Rockchip DW-HDMI
---
 .../display/bridge/synopsys,dw-hdmi.yaml      | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
new file mode 100644
index 000000000000..96c4bc06dbe7
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/synopsys,dw-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Common Properties for Synopsys DesignWare HDMI TX Controller
+
+maintainers:
+  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+
+description: |
+  This document defines device tree properties for the Synopsys DesignWare HDMI
+  TX controller (DWC HDMI TX) IP core. It doesn't constitute a full device tree
+  binding specification by itself but is meant to be referenced by device tree
+  bindings for the platform-specific integrations of the DWC HDMI TX.
+
+  When referenced from platform device tree bindings the properties defined in
+  this document are defined as follows. The platform device tree bindings are
+  responsible for defining whether each property is required or optional.
+
+properties:
+  reg:
+    maxItems: 1
+
+  reg-io-width:
+    description:
+      Width (in bytes) of the registers specified by the reg property.
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - enum: [1, 4]
+    default: 1
+
+  clocks:
+    minItems: 2
+    maxItems: 5
+    items:
+      - description: The bus clock for either AHB and APB
+      - description: The internal register configuration clock
+    additionalItems: true
+
+  clock-names:
+    minItems: 2
+    maxItems: 5
+    items:
+      - const: iahb
+      - const: isfr
+    additionalItems: true
+
+  interrupts:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+additionalProperties: true
+
+...
-- 
Regards,

Laurent Pinchart