diff mbox series

[v3,2/3] dt-bindings: arm: mediatek: mmsys: Add OF graph support for board path

Message ID 20240502115622.248456-3-angelogioacchino.delregno@collabora.com (mailing list archive)
State New, archived
Headers show
Series drm/mediatek: Add support for OF graphs | expand

Commit Message

AngeloGioacchino Del Regno May 2, 2024, 11:56 a.m. UTC
Document OF graph on MMSYS/VDOSYS: this supports up to three DDP paths
per HW instance (so potentially up to six displays for multi-vdo SoCs).

The MMSYS or VDOSYS is always the first component in the DDP pipeline,
so it only supports an output port with multiple endpoints - where each
endpoint defines the starting point for one of the (currently three)
possible hardware paths.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 .../bindings/arm/mediatek/mediatek,mmsys.yaml | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

Comments

Rob Herring (Arm) May 7, 2024, 4:29 p.m. UTC | #1
On Thu, 02 May 2024 13:56:21 +0200, AngeloGioacchino Del Regno wrote:
> Document OF graph on MMSYS/VDOSYS: this supports up to three DDP paths
> per HW instance (so potentially up to six displays for multi-vdo SoCs).
> 
> The MMSYS or VDOSYS is always the first component in the DDP pipeline,
> so it only supports an output port with multiple endpoints - where each
> endpoint defines the starting point for one of the (currently three)
> possible hardware paths.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> ---
>  .../bindings/arm/mediatek/mediatek,mmsys.yaml | 23 +++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
index b3c6888c1457..4e9acd966aa5 100644
--- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
@@ -93,6 +93,29 @@  properties:
   '#reset-cells':
     const: 1
 
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description:
+      Output port node. This port connects the MMSYS/VDOSYS output to
+      the first component of one display pipeline, for example one of
+      the available OVL or RDMA blocks.
+      Some MediaTek SoCs support up to three display outputs per MMSYS.
+    properties:
+      endpoint@0:
+        $ref: /schemas/graph.yaml#/properties/endpoint
+        description: Output to the primary display pipeline
+
+      endpoint@1:
+        $ref: /schemas/graph.yaml#/properties/endpoint
+        description: Output to the secondary display pipeline
+
+      endpoint@2:
+        $ref: /schemas/graph.yaml#/properties/endpoint
+        description: Output to the tertiary display pipeline
+
+    required:
+      - endpoint@0
+
 required:
   - compatible
   - reg