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Documentation: admin-guide: media: add rk3588 vicap

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Add a section that describes the Rockchip RK3588 VICAP.

Reviewed-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Signed-off-by: Michael Riesch <michael.riesch@collabora.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
This commit is contained in:
Michael Riesch
2026-05-22 23:23:07 +02:00
committed by Sakari Ailus
parent f368ded872
commit 804ed52335
2 changed files with 61 additions and 0 deletions
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29
Documentation/admin-guide/media/rkcif-rk3588-vicap.dot Normal file
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@@ -0,0 +1,29 @@
digraph board {
rankdir=TB
n00000007 [label="{{<port0> 0} | rkcif-mipi2\n/dev/v4l-subdev0 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
n00000007:port1 -> n0000000a
n00000007:port1 -> n00000010 [style=dashed]
n00000007:port1 -> n00000016 [style=dashed]
n00000007:port1 -> n0000001c [style=dashed]
n0000000a [label="rkcif-mipi2-id0\n/dev/video0", shape=box, style=filled, fillcolor=yellow]
n00000010 [label="rkcif-mipi2-id1\n/dev/video1", shape=box, style=filled, fillcolor=yellow]
n00000016 [label="rkcif-mipi2-id2\n/dev/video2", shape=box, style=filled, fillcolor=yellow]
n0000001c [label="rkcif-mipi2-id3\n/dev/video3", shape=box, style=filled, fillcolor=yellow]
n00000025 [label="{{<port0> 0} | rkcif-mipi4\n/dev/v4l-subdev1 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
n00000025:port1 -> n00000028
n00000025:port1 -> n0000002e [style=dashed]
n00000025:port1 -> n00000034 [style=dashed]
n00000025:port1 -> n0000003a [style=dashed]
n00000028 [label="rkcif-mipi4-id0\n/dev/video4", shape=box, style=filled, fillcolor=yellow]
n0000002e [label="rkcif-mipi4-id1\n/dev/video5", shape=box, style=filled, fillcolor=yellow]
n00000034 [label="rkcif-mipi4-id2\n/dev/video6", shape=box, style=filled, fillcolor=yellow]
n0000003a [label="rkcif-mipi4-id3\n/dev/video7", shape=box, style=filled, fillcolor=yellow]
n00000043 [label="{{<port0> 0} | dw-mipi-csi2rx fdd30000.csi\n/dev/v4l-subdev2 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
n00000043:port1 -> n00000007:port0
n00000048 [label="{{<port0> 0} | dw-mipi-csi2rx fdd50000.csi\n/dev/v4l-subdev3 | {<port1> 1}}", shape=Mrecord, style=filled, fillcolor=green]
n00000048:port1 -> n00000025:port0
n0000004d [label="{{} | imx415 3-001a\n/dev/v4l-subdev4 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
n0000004d:port0 -> n00000043:port0
n00000051 [label="{{} | imx415 4-001a\n/dev/v4l-subdev5 | {<port0> 0}}", shape=Mrecord, style=filled, fillcolor=green]
n00000051:port0 -> n00000048:port0
}

32
Documentation/admin-guide/media/rkcif.rst
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@@ -77,3 +77,35 @@ and the following video devices:
.. kernel-figure:: rkcif-rk3568-vicap.dot
:alt: Topology of the RK3568 Video Capture (VICAP) unit
:align: center
Rockchip RK3588 Video Capture (VICAP)
-------------------------------------
The RK3588 Video Capture (VICAP) unit features a digital video port and six
MIPI CSI-2 capture interfaces that can receive video data independently.
The DVP accepts parallel video data, BT.656 and BT.1120.
Since the BT.1120 protocol may feature more than one stream, the RK3588 VICAP
DVP features four DMA engines that can capture different streams.
Similarly, the RK3588 VICAP MIPI CSI-2 receivers feature four DMA engines each
to handle different Virtual Channels (VCs).
The rkcif driver represents this hardware variant by exposing the following
V4L2 subdevices:
* dw-mipi-csi2rx fdd30000.csi: MIPI CSI-2 receiver connected to MIPI DPHY0
* dw-mipi-csi2rx fdd50000.csi: MIPI CSI-2 receiver connected to MIPI DPHY1
* rkcif-mipi2: INTERFACE/CROP block for the MIPI CSI-2 receiver connected to
MIPI DPHY0
* rkcif-mipi4: INTERFACE/CROP block for the MIPI CSI-2 receiver connected to
MIPI DPHY1
and the following video devices:
* rkcif-mipi2-id{0,1,2,3}: The DMA engines connected to the rkcif-mipi2
INTERFACE/CROP block.
* rkcif-mipi4-id{0,1,2,3}: The DMA engines connected to the rkcif-mipi4
INTERFACE/CROP block.
.. kernel-figure:: rkcif-rk3588-vicap.dot
:alt: Topology of the RK3588 Video Capture (VICAP) unit
:align: center