Re: [PATCH v5 0/2] Support for Synaptics TDDI series panels

[Kaustabh Chakraborty <kauschluss@disroot.org>]

On 2025-09-10 16:25, Kaustabh Chakraborty wrote:

It's been over a month without any movements, so another bump.

> Hi,
> 
> Bumping to collect some reviews on this series. Thanks!
> 
> On 2025-08-20 14:24, Kaustabh Chakraborty wrote:
>> Synaptics' Touch and Display Driver Integration (TDDI) technology [1]
>> employs a single chip for both touchscreen and display capabilities.
>> Such designs reportedly help reducing costs and power consumption.
>> 
>> Although the touchscreens, which are powered by Synaptics'
>> Register-Mapped Interface 4 (RMI4) touch protocol via I2C or SPI have
>> driver support in the kernel, the MIPI DSI display panels don't.
>> 
>> This series introduces a rudimentary driver for controlling said 
>> display
>> panels, which supports TD4101 and TD4300 panels.
>> 
>> [1] https://www.synaptics.com/technology/display-integration
>> 
>> Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
>> ---
>> Changes in v5:
>> - added missing Reviewed-by tag from Krzysztof in [v3 1/2]
>> - Link to v4: 
>> https://lore.kernel.org/r/20250819-panel-synaptics-tddi-v4-0-448f466d16a6@disroot.org
>> 
>> Changes in v4:
>> - utilized drm_connector_helper_get_modes_fixed() (dmitry.baryshkov)
>> - constified backlight properties (dmitry.baryshkov)
>> - Link to v3: 
>> https://lore.kernel.org/r/20250720-panel-synaptics-tddi-v3-0-43a5957f4b24@disroot.org
>> 
>> Changes in v3:
>> - fixed various dt_binding_check errors (robh's bot)
>> - adjusted commit description of [v2 1/2] (robh)
>> - utilized devm_drm_panel_alloc() and devm_regulator_bulk_get_const()
>> - Link to v2: 
>> https://lore.kernel.org/r/20250625-panel-synaptics-tddi-v2-0-7a62ab1d13c7@disroot.org
>> 
>> Changes in v2:
>> - fixed various dt_binding_check errors (conor)
>> - did s/tddi_update_brightness/tddi_update_status
>> - added check for panel enable in tddi_update_status()
>> - used backlight_get_brightness() in appropriate places
>> - Link to v1: 
>> https://lore.kernel.org/r/20250612-panel-synaptics-tddi-v1-0-dfb8a425f76c@disroot.org
>> 
>> ---
>> Kaustabh Chakraborty (2):
>>       dt-bindings: display: panel: document Synaptics TDDI panel
>>       drm: panel: add support for Synaptics TDDI series DSI panels
>> 
>>  .../display/panel/synaptics,td4300-panel.yaml      |  89 +++++++
>>  drivers/gpu/drm/panel/Kconfig                      |  11 +
>>  drivers/gpu/drm/panel/Makefile                     |   1 +
>>  drivers/gpu/drm/panel/panel-synaptics-tddi.c       | 276 
>> +++++++++++++++++++++
>>  4 files changed, 377 insertions(+)
>> ---
>> base-commit: 5303936d609e09665deda94eaedf26a0e5c3a087
>> change-id: 20250523-panel-synaptics-tddi-0b0b3f07f814
>> 
>> Best regards,
>> --
>> Kaustabh Chakraborty <kauschluss@disroot.org>