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From:   Kevin Tang <kevin3.tang@gmail.com>
To:     maarten.lankhorst@linux.intel.com, mripard@kernel.org,
        sean@poorly.run, airlied@linux.ie, daniel@ffwll.ch,
        robh+dt@kernel.org, mark.rutland@arm.com, kevin3.tang@gmail.com
Cc:     orsonzhai@gmail.com, baolin.wang@linaro.org, zhang.lyra@gmail.com,
        linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH RFC v4 1/6] dt-bindings: display: add Unisoc's drm master bindings
Date:   Wed, 26 Feb 2020 17:46:12 +0800
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From: Kevin Tang <kevin.tang@unisoc.com>

The Unisoc DRM master device is a virtual device needed to list all
DPU devices or other display interface nodes that comprise the
graphics subsystem

Cc: Orson Zhai <orsonzhai@gmail.com>
Cc: Baolin Wang <baolin.wang@linaro.org>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Kevin Tang <kevin.tang@unisoc.com>
---
 .../devicetree/bindings/display/sprd/drm.yaml      | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/sprd/drm.yaml

diff --git a/Documentation/devicetree/bindings/display/sprd/drm.yaml b/Documentation/devicetree/bindings/display/sprd/drm.yaml
new file mode 100644
index 0000000..b5792c0
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/sprd/drm.yaml
@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/sprd/drm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc DRM master device
+
+maintainers:
+  - Mark Rutland <mark.rutland@arm.com>
+
+description: |
+  The Unisoc DRM master device is a virtual device needed to list all
+  DPU devices or other display interface nodes that comprise the
+  graphics subsystem.
+
+properties:
+  compatible:
+    const: sprd,display-subsystem
+
+  ports:
+    description:
+      Should contain a list of phandles pointing to display interface port
+      of DPU devices.
+
+required:
+  - compatible
+  - ports
+
+examples:
+  - |
+    display-subsystem {
+        compatible = "sprd,display-subsystem";
+        ports = <&dpu_out>;
+    };
+
-- 
2.7.4