OmniVision OV6211 is a monochrome image sensor, which produces frames in
8/10-bit raw output format and supports 400x400, 200x200 and 100x100
output image resolution modes.

At the moment the only supported resolution in the device driver is
400x400@120fps (Y8).

The driver version is based on top of media/master, which contains a new
devm_v4l2_sensor_clk_get() helper.

Output of v4l2-compliance tool from v4l-utils-1.20.0:

----8<----
v4l2-compliance SHA: not available, 64 bits, 64-bit time_t

Compliance test for device /dev/v4l-subdev28:

Required ioctls:

Allow for multiple opens:
	test second /dev/v4l-subdev28 open: OK
	test for unlimited opens: OK
	test invalid ioctls: OK

Debug ioctls:
	test VIDIOC_LOG_STATUS: OK (Not Supported)

Input ioctls:
	test VIDIOC_G/S_TUNER/ENUM_FREQ_BANDS: OK (Not Supported)
	test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
	test VIDIOC_S_HW_FREQ_SEEK: OK (Not Supported)
	test VIDIOC_ENUMAUDIO: OK (Not Supported)
	test VIDIOC_G/S/ENUMINPUT: OK (Not Supported)
	test VIDIOC_G/S_AUDIO: OK (Not Supported)
	Inputs: 0 Audio Inputs: 0 Tuners: 0

Output ioctls:
	test VIDIOC_G/S_MODULATOR: OK (Not Supported)
	test VIDIOC_G/S_FREQUENCY: OK (Not Supported)
	test VIDIOC_ENUMAUDOUT: OK (Not Supported)
	test VIDIOC_G/S/ENUMOUTPUT: OK (Not Supported)
	test VIDIOC_G/S_AUDOUT: OK (Not Supported)
	Outputs: 0 Audio Outputs: 0 Modulators: 0

Input/Output configuration ioctls:
	test VIDIOC_ENUM/G/S/QUERY_STD: OK (Not Supported)
	test VIDIOC_ENUM/G/S/QUERY_DV_TIMINGS: OK (Not Supported)
	test VIDIOC_DV_TIMINGS_CAP: OK (Not Supported)
	test VIDIOC_G/S_EDID: OK (Not Supported)

Control ioctls:
	test VIDIOC_QUERY_EXT_CTRL/QUERYMENU: OK
	test VIDIOC_QUERYCTRL: OK
	test VIDIOC_G/S_CTRL: OK
	test VIDIOC_G/S/TRY_EXT_CTRLS: OK
	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: OK
	test VIDIOC_G/S_JPEGCOMP: OK (Not Supported)
	Standard Controls: 10 Private Controls: 0

Format ioctls:
	test VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS: OK (Not Supported)
	test VIDIOC_G/S_PARM: OK (Not Supported)
	test VIDIOC_G_FBUF: OK (Not Supported)
	test VIDIOC_G_FMT: OK (Not Supported)
	test VIDIOC_TRY_FMT: OK (Not Supported)
	test VIDIOC_S_FMT: OK (Not Supported)
	test VIDIOC_G_SLICED_VBI_CAP: OK (Not Supported)
	test Cropping: OK (Not Supported)
	test Composing: OK (Not Supported)
	test Scaling: OK (Not Supported)

Codec ioctls:
	test VIDIOC_(TRY_)ENCODER_CMD: OK (Not Supported)
	test VIDIOC_G_ENC_INDEX: OK (Not Supported)
	test VIDIOC_(TRY_)DECODER_CMD: OK (Not Supported)

Buffer ioctls:
	test VIDIOC_REQBUFS/CREATE_BUFS/QUERYBUF: OK (Not Supported)
	test VIDIOC_EXPBUF: OK (Not Supported)
	test Requests: OK (Not Supported)

Total for device /dev/v4l-subdev28: 41, Succeeded: 41, Failed: 0, Warnings: 0
----8<----

Link to v4 of the OV6211 camera sensor device driver:
- https://lore.kernel.org/all/20250820224541.130229-1-vladimir.zapolskiy@linaro.org/ (local)

Changes from v4 to v5:
* removed unnecessary explicit setting of ov6211->sd.dev (Tarang),
* switched to regulator bulk operations (Sakari, Krzysztof),
* minor non-function clean-ups.

Link to v3 of the OV6211 camera sensor device driver:
- https://lore.kernel.org/all/20250812213024.361267-1-vladimir.zapolskiy@linaro.org/ (local)

Changes from v3 to v4:
* v4l2_ctrl_handler_init() properly set error in handler, an early check
  is not mandatory (Tarang, Sakari),
* removed pm_runtime_mark_last_busy() since it's called by
  pm_runtime_put_autosuspend() (Tarang, Sakari),
* pm_runtime_get_if_in_use() replaced by pm_runtime_get_if_active() (Sakari),
* use v4l2_link_freq_to_bitmap() helper function to check a link frequency
  map (Sakari),
* added a new test pattern control, apparently it's identical to ov7251 one.

Link to v2 of the OV6211 camera sensor device driver:
- https://lore.kernel.org/all/20250729231454.242748-1-vladimir.zapolskiy@linaro.org/ (local)

Changes from v2 to v3:
* added Reviewed-by: tag to the device tree binding (Rob),
* simplifed access to the associated struct device (Tarang),
* ov6211_get_format() replaced by v4l2_subdev_state_get_format() (Tarang),
* removed private .cur_mode, since just one mode is supported (Tarang),
* removed a custom serialization mutex (Tarang),
* set power on before registering the sensor in V4L2 (Tarang),
* v4l2_subdev_internal_ops: replaced .open with .init_state,
* updated signature of ov6211_update_pad_format() to generalize it and
  to simplify adding more modes in future,
* replaced a custom .s_stream from v4l2_subdev_video_ops by .enable_streams
  and .disable_streams callbacks in v4l2_subdev_pad_ops,
* add support of PM runtime autosuspend into the driver,
* taking into account a similarity of OV6211 PLL1 configuration to
  the known OV7251 PLL1 correct the set MIPI link frequency value.

Link to v1 of the OV6211 camera sensor device driver:
- https://lore.kernel.org/linux-media/20250717124001.108486-1-vladimir.zapolskiy@linaro.org/ (local)

Changes from v1 to v2:
* restrict endpoint unevaluated properties (Krzysztof),
* changed dev_err() to dev_err_probe() whenever it's applicable (Krzysztof),
* removed in-driver I2C operations in favour of V4L2 CCI interface (Kieran),
* added hblank, vblank, pixel rate and rotation/orientation V4L2 to
  the list of controls (Kieran, Dave),
* due to unselectable data lanes property removed data_lanes handling (Dave),
* replaced devm_clk_get_optional() with devm_v4l2_sensor_clk_get() (Dave, Mehdi),
* minor cosmetic updates (reported error messages, goto label names etc.).

Vladimir Zapolskiy (2):
  dt-bindings: media: i2c: Add OmniVision OV6211 image sensor
  media: i2c: Add OmniVision OV6211 image sensor driver

 .../bindings/media/i2c/ovti,ov6211.yaml       |  96 +++
 MAINTAINERS                                   |   8 +
 drivers/media/i2c/Kconfig                     |  10 +
 drivers/media/i2c/Makefile                    |   1 +
 drivers/media/i2c/ov6211.c                    | 793 ++++++++++++++++++
 5 files changed, 908 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/ovti,ov6211.yaml
 create mode 100644 drivers/media/i2c/ov6211.c

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2.49.0