2020-12-07 14:53:50

by Kevin Tang

Subject: [PATCH v1 1/6] dt-bindings: display: add Unisoc's drm master bindings

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]>
---
.../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 0000000..3d107e9
--- /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>;
+ };
+
--
2.7.4

2020-12-10 03:51:00

by Rob Herring (Arm)

Subject: Re: [PATCH v1 1/6] dt-bindings: display: add Unisoc's drm master bindings

On Mon, 07 Dec 2020 22:50:21 +0800, Kevin Tang wrote:
> 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]>
> ---
> .../display/sprd/sprd,display-subsystem.yaml | 64 ++++++++++++++++++++++
> 1 file changed, 64 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
>

Reviewed-by: Rob Herring <[email protected]>