[PATCH 00/21] Clean and update tilcdc driver to support DRM_BRIDGE_ATTACH_NO_CONNECTOR

[Swamil Jain]

Hi Kory,
Thanks for the series.

On 11/26/25 23:05, Kory Maincent (TI.com) wrote:
> The starting point for this work was adding support for the HDMI cape:
> https://www.seeedstudio.com/Seeed-Studio-BeagleBone-Green-HDMI-Cape.html
> This will be sent in a later series.
> 
> Initially, Miguel proposed modifying the ite-it66121 bridge to support
> the legacy behavior without the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag:
> https://lore.kernel.org/lkml/20250909-it66121-fix-v1-1-bc79ca83df17@bootlin.com/
> This patch was NAK'd as we don't want to add more legacy code. Maxime
> requested that the tilcdc driver be updated to use
> DRM_BRIDGE_ATTACH_NO_CONNECTOR instead.
> 
> While working on this update, I discovered that the tilcdc driver
> contained significant amounts of legacy code that needed cleaning.
> Since this driver was developed alongside the tda998x driver for
> several AM335x boards, the tda998x driver also required cleanup and
> support for the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag.
> 
> This series is based on the tilcdc fix sent to mainline:
> https://lore.kernel.org/lkml/20251125090546.137193-1-kory.maincent@bootlin.com/
> 
> Patch 1-7: Convert tilcdc binding to YAML and remove the ti,tilcdc,panel
> 	   sub-binding and driver
> Patch 8-16: Clean up tilcdc driver
> Patch 17-19: Clean up tda998x driver
> Patch 20: Add DRM_BRIDGE_ATTACH_NO_CONNECTOR support to tda998x
> Patch 21: Add DRM_BRIDGE_ATTACH_NO_CONNECTOR support to tilcdc
> 
> Signed-off-by: Kory Maincent (TI.com) <kory.maincent at bootlin.com>
> ---
> Kory Maincent (TI.com) (21):
>        dt-bindings: display: tilcdc: Convert to DT schema
>        dt-bindings: display: tilcdc: Add fifo-threshold property
>        drm/tilcdc: Remove simulate_vesa_sync flag
>        drm/tilcdc: Add support for DRM bus flags and simplify panel config
>        ARM: dts: omap: Bind panel to panel-dpi instead of ti,tilcdc,panel driver
>        dt-bindings: display: tilcdc: Remove panel binding
>        drm/tilcdc: Remove tilcdc panel driver
>        drm/tilcdc: Remove component framework support
>        drm/tilcdc: Remove tilcdc_panel_info structure
>        drm/tilcdc: Remove redundant #endif/#ifdef in debugfs code
>        drm/tilcdc: Remove unused encoder and connector tracking arrays
>        drm/tilcdc: Rename external_encoder and external_connector to encoder and connector
>        drm/tilcdc: Rename tilcdc_external to tilcdc_encoder
>        drm/tilcdc: Remove the useless module list support
>        drm/tilcdc: Modernize driver initialization and cleanup paths
>        drm/tilcdc: Remove the use of drm_device private_data
>        drm/bridge: tda998x: Remove component support
>        drm/bridge: tda998x: Move tda998x_create/destroy into probe and remove
>        drm/bridge: tda998x: Remove useless tda998x_connector_destroy wrapper
>        drm/bridge: tda998x: Add support for DRM_BRIDGE_ATTACH_NO_CONNECTOR
>        drm/tilcdc: Add support for DRM_BRIDGE_ATTACH_NO_CONNECTOR
> 
>   .../devicetree/bindings/display/tilcdc/panel.txt   |  66 ---
>   .../devicetree/bindings/display/tilcdc/tilcdc.txt  |  82 ----
>   .../devicetree/bindings/display/tilcdc/tilcdc.yaml | 103 +++++
>   arch/arm/boot/dts/ti/davinci/da850-evm.dts         |  26 +-
>   arch/arm/boot/dts/ti/omap/am335x-guardian.dts      |  25 +-
>   arch/arm/boot/dts/ti/omap/am335x-pdu001.dts        |  21 +-
>   arch/arm/boot/dts/ti/omap/am335x-pepper.dts        |  22 +-
>   arch/arm/boot/dts/ti/omap/am335x-sbc-t335.dts      |  25 +-
>   arch/arm/boot/dts/ti/omap/am335x-sl50.dts          |  25 +-
>   drivers/gpu/drm/bridge/tda998x_drv.c               | 251 ++++++------
>   drivers/gpu/drm/tilcdc/Makefile                    |   3 +-
>   drivers/gpu/drm/tilcdc/tilcdc_crtc.c               | 117 ++----
>   drivers/gpu/drm/tilcdc/tilcdc_drv.c                | 456 +++++++--------------
>   drivers/gpu/drm/tilcdc/tilcdc_drv.h                |  88 +---
>   drivers/gpu/drm/tilcdc/tilcdc_encoder.c            |  93 +++++
>   .../tilcdc/{tilcdc_external.h => tilcdc_encoder.h} |   5 +-
>   drivers/gpu/drm/tilcdc/tilcdc_external.c           | 179 --------
>   drivers/gpu/drm/tilcdc/tilcdc_panel.c              | 408 ------------------
>   drivers/gpu/drm/tilcdc/tilcdc_panel.h              |  15 -
>   drivers/gpu/drm/tilcdc/tilcdc_plane.c              |   2 +-
>   drivers/gpu/drm/tilcdc/tilcdc_regs.h               |   8 +-
>   21 files changed, 589 insertions(+), 1431 deletions(-)
> ---
> base-commit: 670bacfc7579bdd79a3069cfb5ab60a6a7923003

I was trying to test the patches, unable to find the base-commit, are
you using drm-misc-next?

Regards,
Swamil.

> change-id: 20251014-feature_tilcdc-79cd49e67bf9
> 
> Best regards,