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
