[PATCH v3 0/7] drm/rcar-du: Add support for DSI pipelines with DSC

[Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>]

Some DSI pipelines have DSC (Display Stream Compression) IP block
between the DU and the DSI. Even if DSC is not needed, the IP must be
enabled for the DSI output to work.

This series adds a basic DSC driver, so that the DSC IP gets enabled in
bypass mode. This enables DisplayPort output on Sparrow Hawk board, as
the DP output comes from DSI and sn65dsi86 bridge, and also White Hawk
board's second mini-DP output.

Original series from Marek.

Note: I see that not every run of kms++'s kmstest gives me a picture on
my monitor. Sometimes the monitor seems to be trying to repeatedly sync,
but fails, and the screen stays black. However, I see this same issue on
WhiteHawk, which uses DSI0 pipeline, without DSC, so I think that is a
separate issue.

 Tomi

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
---
Changes in v3:
- Simplify DSC driver: drop reset control, drop clk handling, use runtime PM
- Split dts changes for r8a779g0 and sparrow-hawk to separate patches
- Add "arm64: dts: renesas: white-hawk: Add second mini-DP output
  support"
- Link to v2: https://patch.msgid.link/20260515-rcar-du-dsc-v2-0-f6b9240a1240@ideasonboard.com

Changes in v2:
- Fixed the dts example in "dt-bindings: display: bridge: Document
  Renesas R-Car V4H DSC bindings"
- Link to v1: https://lore.kernel.org/r/20260514-rcar-du-dsc-v1-0-d65f7a9e9841@ideasonboard.com

---
Geert Uytterhoeven (1):
      arm64: dts: renesas: white-hawk: Add second mini-DP output support

Marek Vasut (5):
      clk: renesas: r8a779g0: Add DSC clock
      dt-bindings: display: bridge: Document Renesas R-Car V4H DSC bindings
      drm/rcar-du: dsc: Add rudimentary Renesas R-Car V4H DSC driver
      arm64: dts: renesas: r8a779g0: Add DSC
      arm64: dts: renesas: sparrow-hawk: Enable DisplayPort by adding DSC

Tomi Valkeinen (1):
      drm/rcar-du: dsi: Support DSC in the pipeline

 .../bindings/display/bridge/renesas,dsc.yaml       |  96 +++++++++++++
 .../arm64/boot/dts/renesas/r8a779g0-white-hawk.dts |  94 ++++++++++++
 arch/arm64/boot/dts/renesas/r8a779g0.dtsi          |  31 +++-
 .../boot/dts/renesas/r8a779g3-sparrow-hawk.dts     |   5 +
 drivers/clk/renesas/r8a779g0-cpg-mssr.c            |   1 +
 drivers/gpu/drm/renesas/rcar-du/Kconfig            |  12 ++
 drivers/gpu/drm/renesas/rcar-du/Makefile           |   1 +
 drivers/gpu/drm/renesas/rcar-du/rcar_dsc.c         | 160 +++++++++++++++++++++
 drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi.c    |  36 ++++-
 9 files changed, 433 insertions(+), 3 deletions(-)
---
base-commit: 028ef9c96e96197026887c0f092424679298aae8
change-id: 20260514-rcar-du-dsc-45bcf0c2fe86

Best regards,
--  
Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>