[PATCH v11 2/3] dt-bindings: arm: mediatek: mmsys: Add OF graph support for board path
AngeloGioacchino Del Regno
angelogioacchino.delregno at collabora.com
Mon Oct 7 09:31:13 UTC 2024
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.
Reviewed-by: Rob Herring (Arm) <robh at kernel.org>
Reviewed-by: Alexandre Mergnat <amergnat at baylibre.com>
Tested-by: Alexandre Mergnat <amergnat at baylibre.com>
Reviewed-by: CK Hu <ck.hu at mediatek.com>
Tested-by: Michael Walle <mwalle at kernel.org> # on kontron-sbc-i1200
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
---
.../bindings/arm/mediatek/mediatek,mmsys.yaml | 28 +++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
index b3c6888c1457..3f4262e93c78 100644
--- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
@@ -93,6 +93,34 @@ 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 multiple display outputs per MMSYS.
+ properties:
+ endpoint at 0:
+ $ref: /schemas/graph.yaml#/properties/endpoint
+ description: Output to the primary display pipeline
+
+ endpoint at 1:
+ $ref: /schemas/graph.yaml#/properties/endpoint
+ description: Output to the secondary display pipeline
+
+ endpoint at 2:
+ $ref: /schemas/graph.yaml#/properties/endpoint
+ description: Output to the tertiary display pipeline
+
+ anyOf:
+ - required:
+ - endpoint at 0
+ - required:
+ - endpoint at 1
+ - required:
+ - endpoint at 2
+
required:
- compatible
- reg
--
2.46.1
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