[PATCH v3 0/2] Add bindings and driver for Sony IMX908

[Lachlan Michael <lachlan.michael@sony.com>]

This series adds device tree bindings and a V4L2 sub-device driver for
the Sony IMX908 image sensor.

The IMX908 is an 8.39 MP (3856x2176) CMOS image sensor with a MIPI CSI-2
output interface. The driver supports RAW10 and RAW12 output formats,
exposure and analogue gain controls, image flipping, blanking controls,
window cropping and test pattern generation.

HDR modes and RAW16 output are not currently supported.

The driver has been tested with libcamera on Raspberry Pi 5 based
hardware.

Changes in v3:
PATCH 1:
-  Adjust the binding description to match the actual hardware: the I2C
   target address is selected by the SLAMODE pins, not fixed to 0x1A.
-  Add the standard video-interface schema reference so the endpoint and
   remote-endpoint validation match the media DT conventions.
   
PATCH 2:
- Correct link-frequency indexing mapping to match the sensor
  DATARATE_SEL values and the frequency ordering
- Changed the pixel_rate to 16-pixel-per-clocks based on datasheet
  mode values
- Clean up the constant names, register definitions and comments in
  response to review feedback.
- Remove various (uneeded) checks in code based on feedback
- Remove cached vmax/hmax and recalculated where necessary
- Drop pixel_rate and test_pattern pointers from struct
- Remove read-only controls set_ctrl switch
- Remove event handlers
- Remove uneeded delays at startup 
- Simplify runtime_resume/suspend functions
- Remove the 4k recording-area in favour of larger active area
- Use the same constraints for VMAX for crop and all pixel mode to
  simplify the driver logic by removing branching
- Rework HMAX based on the fact that the whole line is always read
  even in crop mode. HMAX varies in all modes now, but not with 
  horizontal crop.
- Minor edits and bugfixes 

Link to v2: https://lore.kernel.org/r/20260806070934.21764-1-lachlan.michael@sony.com/

Changes in v2:
PATCH 1:
- Reword subject to drop the redundant "bindings" suffix.
- Reference video-interfaces.yaml for the endpoint and switch to
  unevaluatedProperties, fixing the remote-endpoint check.
- Drop "link-frequencies: true".
- MAINTAINERS: drop the L: line.
- MAINTAINERS: move the driver F: line to patch 2.

PATCH 2:
- Treat the pixel rate as a fixed sensor property (594 MHz, 8 px/clock),
  read-only.
- Compute HMAX from both the array and MIPI link floors.
- Express HBLANK in pixels with a step of 8; keep HMAX fixed in crop
  mode.
- Drop struct imx908_mode; cache hmax/vmax directly.
- Change the link-frequency table to s64.
- Fix the probe error-unwind ordering.
- Be silent on success (chip ID print is now dev_dbg).
- Drop redundant comments.
- Kconfig: fix a "module will be called" typo.

Link to v1: https://lore.kernel.org/r/20260730021525.166811-1-lachlan.michael@sony.com

Lachlan Michael (2):
  media: dt-bindings: imx908: Add Sony IMX908 sensor
  media: i2c: Add Sony IMX908 image sensor driver

 .../bindings/media/i2c/sony,imx908.yaml       |  108 ++
 MAINTAINERS                                   |    6 +
 drivers/media/i2c/Kconfig                     |   11 +
 drivers/media/i2c/Makefile                    |    1 +
 drivers/media/i2c/imx908.c                    | 1367 +++++++++++++++++
 5 files changed, 1493 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/sony,imx908.yaml
 create mode 100644 drivers/media/i2c/imx908.c

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2.47.3