Re: [PATCH 0/2] backlight: Add Awinic AW99703 driver

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 [off-list ref] 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
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2.55.0