[PATCH v2 00/16] drm/tidss: Add BeagleY-AI display support (and some more)

[Tomi Valkeinen]

This series aims to add display support for all display interfaces on
BeagleY-AI board. More generally, it adds display support for TI AM62P,
J722S, and related SoCs, and, as a bit extra, improves AM62L's DPI
handling.

The main topics to highlight:

- The data and sync signal polarities require accessing a register
  (DPI0_CLK_CTRL) in the CTRL_MMR block. This has already been discussed
  e.g. in
  https://lore.kernel.org/all/20250730-fix-edge-handling-v1-0-1bdfb3fe7922%40bootlin.com/.
  In this series the whole CTRL_MMR ("main_conf") block is changed to a
  syscon, which allows simpler access to the DPI0_CLK_CTRL register.

- The tidss OLDI support will now use auxiliary device/driver. This seems
  to solve quite neatly the requirement to have a power-domain for each
  OLDI. The main issue that remains is that on AM62P (and similar) we
  will have three OLDI TX DT nodes, even if there are only two in the
  hardware.

With this series one can use the HDMI output on BeagleY-AI. I have also
tested the DSI output with Raspberry Pi's 7" DSI display, and OLDI
output with an oscilloscope (I don't have a suitable OLDI panel).

 Tomi

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
---
Changes in v2:
- Add Rb and Tb tags
- Drop "dt-bindings: mfd: syscon: Add ti,am625-dss-dpi0-clk-ctrl
  compatible", which is now implemented with the below changes.
- New patch "dt-bindings: display: ti,am65x-dss: Add ti,dpi-io-ctrl"
- Modify "drm/tidss: Add external data and sync signal edge
  configuration" to use the 'ti,dpi-io-ctrl' with offset.
- New patch "arm64: dts: ti: k3-am62p-j722s-common-main: Make main_conf
  a syscon".
- Modify "arm64: dts: ti: k3-am62p-j722s-common-main: Add support for
  DSS" to set 'ti,dpi-io-ctrl' properties
- Drop generic desc in DT bindings for power-domains property
- Fix pm_runtime_get_sync() return value check
- Link to v1: https://lore.kernel.org/r/20260420-beagley-ai-display-v1-0-f628543dfd14@xxxxxxxxxxxxxxxx

---
Andrew Davis (1):
      arm64: dts: ti: beagley-ai: Enable HDMI display and audio

Jayesh Choudhary (1):
      arm64: dts: ti: k3-am62p-j722s-common-main: Add support for DSS

Swamil Jain (1):
      drm/tidss: Add support for AM62P display subsystem

Tomi Valkeinen (13):
      dt-bindings: display: ti: Move ti,am62l-dss binding to a new binding file
      dt-bindings: display: ti,am65x-dss: Simplify binding
      dt-bindings: display: ti,am625-oldi: Add optional power-domain for OLDI
      dt-bindings: display: ti,am65x-dss: Add ti,dpi-io-ctrl
      dt-bindings: display: ti,am65x-dss: Add AM62P DSS
      drm/tidss: Remove extra pm_runtime_mark_last_busy
      drm/tidss: oldi: Remove define for unused register OLDI_LB_CTRL
      drm/tidss: Add mechanism to detect DPI output
      drm/tidss: Add external data and sync signal edge configuration
      drm/tidss: Add support for DPIENABLE bit
      drm/tidss: oldi: Fix OLDI signal polarities
      drm/tidss: oldi: Convert OLDI to an aux driver
      arm64: dts: ti: k3-am62p-j722s-common-main: Make main_conf a syscon

 .../bindings/display/ti/ti,am625-oldi.yaml         |   3 +
 .../bindings/display/ti/ti,am62l-dss.yaml          | 136 ++++++
 .../bindings/display/ti/ti,am65x-dss.yaml          | 187 +++-----
 MAINTAINERS                                        |   1 +
 .../boot/dts/ti/k3-am62p-j722s-common-main.dtsi    | 111 ++++-
 arch/arm64/boot/dts/ti/k3-am62p.dtsi               |  16 +
 arch/arm64/boot/dts/ti/k3-am67a-beagley-ai.dts     | 197 ++++++++
 arch/arm64/boot/dts/ti/k3-j722s.dtsi               |  16 +
 drivers/gpu/drm/tidss/tidss_crtc.c                 |  10 +-
 drivers/gpu/drm/tidss/tidss_crtc.h                 |   4 +-
 drivers/gpu/drm/tidss/tidss_dispc.c                |  49 +-
 drivers/gpu/drm/tidss/tidss_dispc.h                |   5 +-
 drivers/gpu/drm/tidss/tidss_dispc_regs.h           |   5 +
 drivers/gpu/drm/tidss/tidss_drv.c                  |  54 ++-
 drivers/gpu/drm/tidss/tidss_drv.h                  |   5 +-
 drivers/gpu/drm/tidss/tidss_kms.c                  |  55 ++-
 drivers/gpu/drm/tidss/tidss_oldi.c                 | 531 +++++++++++++++------
 drivers/gpu/drm/tidss/tidss_oldi.h                 |   8 +-
 18 files changed, 1104 insertions(+), 289 deletions(-)
---
base-commit: 3131ff5a117498bb4b9db3a238bb311cbf8383ce
change-id: 20260420-beagley-ai-display-d7f634cde5f4
prerequisite-message-id: <20260415110409.2577633-1-s-jain1@xxxxxx>
prerequisite-patch-id: 654d90f9cddec8b41e6fb1b3776a632606fef88c

Best regards,
-- 
Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>