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- .. SPDX-License-Identifier: GPL-2.0
- .. include:: <isonum.txt>
- ================================
- Starfive Camera Subsystem driver
- ================================
- Introduction
- ------------
- This file documents the driver for the Starfive Camera Subsystem found on
- Starfive JH7110 SoC. The driver is located under drivers/staging/media/starfive/
- camss.
- The driver implements V4L2, Media controller and v4l2_subdev interfaces. Camera
- sensor using V4L2 subdev interface in the kernel is supported.
- The driver has been successfully used on the Gstreamer 1.18.5 with v4l2src
- plugin.
- Starfive Camera Subsystem hardware
- ----------------------------------
- The Starfive Camera Subsystem hardware consists of::
- |\ +---------------+ +-----------+
- +----------+ | \ | | | |
- | | | | | | | |
- | MIPI |----->| |----->| ISP |----->| |
- | | | | | | | |
- +----------+ | | | | | Memory |
- |MUX| +---------------+ | Interface |
- +----------+ | | | |
- | | | |---------------------------->| |
- | Parallel |----->| | | |
- | | | | | |
- +----------+ | / | |
- |/ +-----------+
- - MIPI: The MIPI interface, receiving data from a MIPI CSI-2 camera sensor.
- - Parallel: The parallel interface, receiving data from a parallel sensor.
- - ISP: The ISP, processing raw Bayer data from an image sensor and producing
- YUV frames.
- Topology
- --------
- The media controller pipeline graph is as follows:
- .. _starfive_camss_graph:
- .. kernel-figure:: starfive_camss_graph.dot
- :alt: starfive_camss_graph.dot
- :align: center
- The driver has 2 video devices:
- - capture_raw: The capture device, capturing image data directly from a sensor.
- - capture_yuv: The capture device, capturing YUV frame data processed by the
- ISP module
- The driver has 3 subdevices:
- - stf_isp: is responsible for all the isp operations, outputs YUV frames.
- - cdns_csi2rx: a CSI-2 bridge supporting up to 4 CSI lanes in input, and 4
- different pixel streams in output.
- - imx219: an image sensor, image data is sent through MIPI CSI-2.
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