From: Kevin Tang <[email protected]>
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
Unisoc's display pipeline have several components as below
description, multi display controllers and corresponding physical
interfaces.
For different display scenarios, dpu0 and dpu1 maybe binding to
different encoder.
E.g:
dpu0 and dpu1 both binding to DSI for dual mipi-dsi display;
dpu0 binding to DSI for primary display, and dpu1 binding to DP for
external display;
Cc: Orson Zhai <[email protected]>
Cc: Chunyan Zhang <[email protected]>
Signed-off-by: Kevin Tang <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
---
.../display/sprd/sprd,display-subsystem.yaml | 64 +++++++++++++++++++
1 file changed, 64 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
diff --git a/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml b/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
new file mode 100644
index 000000000..3d107e943
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/sprd/sprd,display-subsystem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc DRM master device
+
+maintainers:
+ - Kevin Tang <[email protected]>
+
+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.
+
+ Unisoc's display pipeline have several components as below description,
+ multi display controllers and corresponding physical interfaces.
+ For different display scenarios, dpu0 and dpu1 maybe binding to different
+ encoder.
+
+ E.g:
+ dpu0 and dpu1 both binding to DSI for dual mipi-dsi display;
+ dpu0 binding to DSI for primary display, and dpu1 binding to DP for external display;
+
+ +-----------------------------------------+
+ | |
+ | +---------+ |
+ +----+ | +----+ +---------+ |DPHY/CPHY| | +------+
+ | +----->+dpu0+--->+MIPI|DSI +--->+Combo +----->+Panel0|
+ |AXI | | +----+ +---------+ +---------+ | +------+
+ | | | ^ |
+ | | | | |
+ | | | +-----------+ |
+ | | | | |
+ |APB | | +--+-+ +-----------+ +---+ | +------+
+ | +----->+dpu1+--->+DisplayPort+--->+PHY+--------->+Panel1|
+ | | | +----+ +-----------+ +---+ | +------+
+ +----+ | |
+ +-----------------------------------------+
+
+properties:
+ compatible:
+ const: sprd,display-subsystem
+
+ ports:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description:
+ Should contain a list of phandles pointing to display interface port
+ of DPU devices.
+
+required:
+ - compatible
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ display-subsystem {
+ compatible = "sprd,display-subsystem";
+ ports = <&dpu_out>;
+ };
+
--
2.29.0