Re: [PATCH 0/4] Add support for hx83102-based Holitech HTF065H045 panel

[David Heidelberg <david@ixit.cz>]

On 17/02/2026 08:00, Val Packett wrote:
> This 720x1600 panel is found in several Motorola/Lenovo smartphones.
> It will be used in the device tree for the Moto G9 Play (sm6115-motorola-guamp).
> Fully tested on it, including brightness adjustment.
> 
> The initialization sequence is based on leaked documentation found online :)
> as the sequence included in downstream Android DTS was near-empty (I think it
> relies on the bootloader to do the bulk of the initialization).

Depends how bad is the driver in Android, but generally when panel is powered 
down (not with DSI command, but regulator-wise) it needs full sequence to 
power-on. This implies the Android driver should (but maybe doesn't?) do full 
initialization.

You can also extract the sequence from the EFI bootloader firmware image (it's 
XML file) and verify (if you want to).

> That documentation is also the source for the exact model number (as it's the
> same vendor, same controller IC, same resolution, and made for Motorola).
> 
> Thanks,
> ~val
> 
> Val Packett (4):
>    dt-bindings: vendor-prefixes: Add Holitech
>    dt-bindings: display: panel: Add compatible for Holitech HTF065H045
>    drm/panel: himax-hx83102: Add support for Holitech HTF065H045
>    drm/panel: himax-hx83102: Add support for DSI DCS backlight control
> 
>   .../bindings/display/panel/himax,hx83102.yaml |   2 +
>   .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
>   drivers/gpu/drm/panel/panel-himax-hx83102.c   | 151 ++++++++++++++++++
>   3 files changed, 155 insertions(+)
> 

-- 
David Heidelberg