[0/8] arm64: dts: allwinner: h616: add LCD timing controller and display engine support

Message

Ryan Walklin Feb. 16, 2025, 9:27 a.m. UTC

The H616 series of SoCs has an LCD timing controller as part of its display pipeline, capable of outputting to an LCD display, as well as HDMI and (depending on the SoC) composite TV signals. The pins are not exposed on all die variants, but the H700 variant is exposes RGB and LVDS pins. Building on the DE33 display engine patches on the list (https://lore.kernel.org/linux-sunxi/[e-mail]), this patch series:

- adds the required device tree configuration for the display pipeline to the H616 (bus, display engine, mixer and timing controller)
- adds a quirk to the sun4i TCON driver for the Allwinner R40 (compatible with the H616/H618/H700/T507)
- describes the H616 RGB and LVDS GPIO pins
- adds the required pipeline endpoints to the device tree for the Anbernic RG35XX devices featuring this SoC
- adds LCD panel description, and required power supply configuration for the panel, backlight and GPIO pins for the RG35XX

Thanks to Jernej Skrabec for the initial out-of-tree patch for the T507.

Regards,

Ryan

Jernej Skrabec (4):
  arm64: dts: allwinner: h616: add display engine, bus and mixer nodes
  drm/sun4i: tcon: Add support for R40 LCD
  arm64: dts: allwinner: h616: Add TCON nodes to H616 DTSI
  arm64: dts: allwinner: h616: add LCD, LVDS and PWM pins

Ryan Walklin (4):
  bus: sun50i: add DE33 compatible string to the DE2 bus driver
  dt-bindings: allwinner: Add TCON_TOP and TCON_LCD clock/reset defines
  arm64: dts: allwinner: rg35xx: Enable LCD output
  arm64: dts: allwinner: rg35xx: Add GPIO backlight control

 .../arm64/boot/dts/allwinner/sun50i-h616.dtsi | 221 ++++++++++++++++++
 .../sun50i-h700-anbernic-rg35xx-2024.dts      |  64 +++++
 drivers/bus/sun50i-de2.c                      |   1 +
 drivers/gpu/drm/sun4i/sun4i_tcon.c            |   9 +
 include/dt-bindings/clock/sun8i-tcon-top.h    |   2 +
 5 files changed, 297 insertions(+)