[PATCH v4 0/8] media: i2c: Add RDACM21 camera module

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Hello, this v4 follows discussion on how to better handle the initial
reverse channel amplitude and incorporate Geert's and Kieran suggestion
to use the value in millivolts instead of relying on a boolean property.

v4:
- Replace 'maxim-high-threshold' with 'maxim,initial-reverse-channel-mV'
- Increse delay when reading OV490 chip ID to give it a bit more time to
  exit reset

v3:
https://patchwork.linuxtv.org/project/linux-media/list/?series=3657

Background in v1 cover letter:
https://www.spinics.net/lists/linux-renesas-soc/msg52886.html

I have tested on Eagle V3M with 4 RDACM21, but the whole point of
this series is to retain compatibility with RDACM20.

For this reason I have included 2 patches on top, not intended for merge
that re-propose DTS support for the MAXIM max9286 expansion board connected
to Salvator-X and add the newly introduced property to the DTS file.

Kieran, I know you have a working setup with RDACM20, the final two patches are
meant for ease your testing. Can you give this series a spin ?

Series based on latest renesas-drivers tag: renesas-drivers-2020-11-10-v5.10-rc3

If I get a confirmation this setup works on Salvator-X, I'll submit the new
property for inclusion to devicetree people, which I have left out at the
moment.

Thanks
  j

Jacopo Mondi (7):
  media: i2c: Add driver for RDACM21 camera module
  dt-bindings: media: max9286: Document
    'maxim,,initial-reverse-channel-mV"
  media: i2c: max9286: Break-out reverse channel setup
  media: i2c: max9286: Make channel amplitude programmable
  media: i2c: max9286: Configure reverse channel amplitude
  [DNI] arm64: dts: renesas: salvator-x-max9286: Specify channel
    amplitude
  [DNI] arm64: dts: renesas: eagle: Specify channel amplitude

Laurent Pinchart (1):
  arm64: dts: renesas: salvator-x: Add MAX9286 expansion board

 .../bindings/media/i2c/maxim,max9286.yaml     |  23 +
 MAINTAINERS                                   |  12 +
 .../arm64/boot/dts/renesas/r8a77970-eagle.dts |   1 +
 .../boot/dts/renesas/salvator-x-max9286.dtsi  | 396 +++++++++++++
 drivers/media/i2c/Kconfig                     |  13 +
 drivers/media/i2c/Makefile                    |   2 +
 drivers/media/i2c/max9286.c                   |  58 +-
 drivers/media/i2c/rdacm21.c                   | 539 ++++++++++++++++++
 8 files changed, 1031 insertions(+), 13 deletions(-)
 create mode 100644 arch/arm64/boot/dts/renesas/salvator-x-max9286.dtsi
 create mode 100644 drivers/media/i2c/rdacm21.c

--
2.29.1




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