RE: [PATCH v4 0/5] Add DU support for RZ/T2H and RZ/N2H SoCs

[Biju Das]

Hi,

> -----Original Message-----
> From: Prabhakar <prabhakar.csengg@xxxxxxxxx>
> Sent: 19 May 2026 17:08
> Subject: [PATCH v4 0/5] Add DU support for RZ/T2H and RZ/N2H SoCs
> 
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> 
> Hi All,
> 
> This series adds support for the Display Unit (DU) on the RZ/T2H and RZ/N2H (R9A09G087) SoCs. The DU on
> these platforms is functionally similar to the RZ/G2UL DU but includes some SoC specific differences
> such as a single output port and explicit DPI output enable control. The series includes the following
> changes:
> 1. Add device tree bindings for the RZ/T2H and RZ/N2H DU variants,
>    including a new compatible string.
> 2. Make the DU reset control optional to allow probing on RZ/T2H
>    where the DU does not have a reset line.
> 3. Move pixel clock validation logic to per-SoC constraints in
>    rzg2l_du_device_info to accommodate different clock limits
>    across SoCs.
> 4. Implement support for the RZ/T2H DU variant in the driver,
>    including handling of the DPI output enable signal.
> 
> Patches are rebased on next-20260519 and apply on drm-next.
> 
> v3->v4:
> - Added Acked-by tag from Rob for patch #1
> - Added Reviewed-by tag from Rob for patches #2
> - Dropped per pad limits in patch #4 and added
>   a check to return early if the output is not DPAD0,
>   as the clock limits only apply to that output.
> - Updated commit message in patch #4
> 
> v2->v3:
> - Rebased on latest next-20260508.
> - Included Tommaso's patch to refuse port@1 for RZ/G2UL, which was
>   previously in a separate series.
> - Moved clock limits from device_info to output_routing to allow
>   per-output constraints.
> - Updated commit message for patch#4
> 
> v1->v2:
> - Dropped the "port" property in favor of "ports" with a single port@0
>   child, to align with the existing RZ/G2L bindings and simplify the
>   device tree structure.
> - Updated the commit message to reflect the change from "port" to "ports".
> - Dropped storing info pointer in struct rzg2l_du_encoder as it's not
>   needed.
> - Add Reviewed-by tags from Laurent for patches 2-4.
> - Rebase on latest next-20260507.
> 
> Cheers,
> Prabhakar
> 
> Lad Prabhakar (4):
>   dt-bindings: display: renesas,rzg2l-du: Add RZ/T2H and RZ/N2H support
>   drm: renesas: rz-du: Make DU reset control optional for RZ/T2H support
>   drm: renesas: rz-du: Move mode_valid logic to per-SoC clock limits
>   drm: renesas: rz-du: Add support for RZ/T2H SoC
> 
> Tommaso Merciai (1):
>   dt-bindings: display: renesas,rzg2l-du: Refuse port@1 for RZ/G2UL
> 
>  .../bindings/display/renesas,rzg2l-du.yaml    | 21 +++++++++++++++++--
>  drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.c |  9 ++++++--  drivers/gpu/drm/renesas/rz-
> du/rzg2l_du_drv.c  | 20 +++++++++++++++++-  drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h  | 14
> +++++++++++++  .../gpu/drm/renesas/rz-du/rzg2l_du_encoder.c  |  9 +++++++-
>  5 files changed, 67 insertions(+), 6 deletions(-)
> 
> --
> 2.54.0

Applied to drm-misc-next.

Cheers,
Biju