Hi Daniel, Krzysztof,
Thanks for the reviews. Before reworking this for v2 I'd like to agree
on the approach.
Following Daniel's suggestion I'll add AW99703 support to the aw99706
driver using per-chip data instead of adding a new driver. The register
maps differ almost entirely, so most of the DT properties stay
per-chip (dim-mode/UVLO/ramp-ctl on AW99706, OVP/OCP/inductor on
AW99703).
Following Krzysztof's review, the AW99703 binding will drop the
ramp/transition timing and mapping properties and use the standard
led-sources and led-max-microamp properties.
That leaves the one common property, the maximum LED current,
spelled differently in a single driver: awinic,iled-max-microamp for
AW99706 and led-max-microamp for AW99703. To avoid that I'd like to:
- add led-max-microamp to awinic,aw99706.yaml and mark
awinic,iled-max-microamp as deprecated
- have the driver read led-max-microamp for both chips, falling back
to awinic,iled-max-microamp on AW99706 so existing DTs keep working
Does that sound acceptable?
Thanks,
Luka
On Fri, Oct 16, 2026 at 6:29 PM Luka Panio <[email protected]> wrote:
>
> The Awinic AW99703 is a high-efficiency 3-channel WLED driver with an
> integrated boost converter and 11-bit brightness control over I2C,
> optionally combined with a PWM input. It is used as an LCD backlight
> driver in some mobile devices.
>
> This series adds the devicetree binding and a driver for it.
>
> Tested on the Nexphone by Nex Computers.
>
> A board DTS using it will follow separately.
>
> Luka Panio (2):
> dt-bindings: leds: backlight: Add Awinic AW99703 backlight
> backlight: Add Awinic AW99703 backlight driver
>
> .../leds/backlight/awinic,aw99703.yaml | 131 ++++
> MAINTAINERS | 6 +
> drivers/video/backlight/Kconfig | 11 +
> drivers/video/backlight/Makefile | 1 +
> drivers/video/backlight/aw99703.c | 583 ++++++++++++++++++
> 5 files changed, 732 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/leds/backlight/awinic,aw99703.yaml
> create mode 100644 drivers/video/backlight/aw99703.c
>
>
> base-commit: d419d682257d813f6cb7a28e42b35d0edf4ad038
> --
> 2.55.0
>
