[PATCH v2 0/3] Add support for Mayqueen Pixpaper e-ink panel

[LiangCheng Wang <zaq14760@gmail.com>]

This patch series adds support for the Mayqueen Pixpaper e-ink display panel,
controlled via SPI.

The series includes:
- A new vendor-prefix entry for "mayqueen"
- Device tree binding documentation for the Pixpaper panel
- A DRM tiny driver implementation for the Pixpaper panel
- A MAINTAINERS entry for the Pixpaper DRM driver and binding

The panel supports 122x250 resolution with XRGB8888 format and uses SPI,
along with GPIO lines for reset, busy, and data/command control.

The driver has been tested on:
- Raspberry Pi 2 Model B
with Linux kernel 6.16.

---
Changes in v2:
- Reordered patches so that DT bindings come before the driver (suggested by Rob Herring)
- Fixed sparse warning: removed duplicate `.reset` initializer in `pixpaper_plane_funcs`
- Fixed checkpatch issues reported by Media CI:
  - Removed unnecessary blank line before closing brace
  - Moved opening parentheses up to function call lines (e.g., `DRM_WARN(...)`)
  - Fixed alignment of conditionals
  - Fixed `dev_warn(` and `drm_universal_plane_init(` formatting
- Thanks to Rob Herring for ack on vendor-prefix patch
- Link to v1: https://lore.kernel.org/r/20250708-drm-v1-0-45055fdadc8a@gmail.com

Thanks for the feedback!

Best regards,
LiangCheng Wang
<zaq14760@gmail.com>

---
LiangCheng Wang (2):
      dt-bindings: display: Add Mayqueen Pixpaper e-ink panel
      drm: tiny: Add support for Mayqueen Pixpaper e-ink panel

Wig Cheng (1):
      dt-bindings: vendor-prefixes: Add Mayqueen name

 .../bindings/display/mayqueen,pixpaper.yaml        |  63 ++
 .../devicetree/bindings/vendor-prefixes.yaml       |   2 +
 MAINTAINERS                                        |   6 +
 drivers/gpu/drm/tiny/Kconfig                       |  15 +
 drivers/gpu/drm/tiny/Makefile                      |   1 +
 drivers/gpu/drm/tiny/pixpaper.c                    | 777 +++++++++++++++++++++
 6 files changed, 864 insertions(+)
---
base-commit: d7b8f8e20813f0179d8ef519541a3527e7661d3a
change-id: 20250708-drm-6021df0715d7

Best regards,
-- 
LiangCheng Wang <zaq14760@gmail.com>