[PATCH v3 00/15] drm/sun4i: Add A83t LVDS support

Maxime Ripard maxime.ripard at free-electrons.com
Tue Dec 5 15:10:12 UTC 2017


Here is an attempt at supporting the LVDS output in our DRM driver. This
has been tested on the A83T (with DE2), but since everything is basically
in the TCON, it should also be usable on the older SoCs with minor

This was the occasion to refactor a bunch of things. The most notable ones
would be the documentation, and split of the UI layers in the mixer code,
and the switch to kfifo for our endpoint parsing code in the driver that
fixes an issue introduced by the switch to BFS.

Let me know what you think,

Changes from v2:
  - Move the module clock rate to the mixer structure
  - Adjusted the simple-panel documentation for power-supply
  - Changed the compatible for the first A83t mixer to mixer 0
  - Rebased on top of current drm-misc
  - Split out the A83t bindings in its separate patch

Changes from v1:
  - Added a fix for the error path handling in the TCON
  - Enable the TCON by default
  - Removed the patch that changes the channels offset but kept most of the
    modifications as a cleanup
  - Deal with the LVDS clock being able to have another PLL parent on some
  - Renamed the TCON compatible to TCON-TV, following the convention used
    on newer SoCs
  - Removed the hardcoded timings
  - Moved LVDS enable quirks to a separate function
  - Used clock indices define in the DT
  - Removed the hardcoded clock rate in the DT and moved it to the driver
  - Changed sun8i_mixer_planes to sun8i_mixer_ui_planes to be consistent
  - Added the various tags collected
  - Rebased on top of 4.15

Maxime Ripard (15):
  dt-bindings: panel: lvds: Document power-supply property
  drm/panel: lvds: Add support for the power-supply property
  dt-bindings: display: sun4i-drm: Add LVDS properties
  dt-bindings: display: sun4i-drm: Add A83T pipeline
  drm/sun4i: Fix error path handling
  drm/sun4i: Force the mixer rate at 150MHz
  drm/sun4i: Create minimal multipliers and dividers
  drm/sun4i: Add LVDS support
  drm/sun4i: Add A83T support
  ARM: dts: sun8i: a83t: Add display pipeline
  ARM: dts: sun8i: a83t: Enable the PWM
  ARM: dts: sun8i: a83t: Add LVDS pins group
  ARM: dts: sun8i: a83t: Add the PWM pin group
  ARM: dts: sun8i: a711: Reinstate the PMIC compatible
  ARM: dts: sun8i: a711: Enable the LCD

 Documentation/devicetree/bindings/display/panel/panel-common.txt |   6 ++-
 Documentation/devicetree/bindings/display/panel/panel-lvds.txt   |   1 +-
 Documentation/devicetree/bindings/display/panel/simple-panel.txt |   2 +-
 Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt    |  11 +++-
 arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts                        |  62 ++++++++++++++++++-
 arch/arm/boot/dts/sun8i-a83t.dtsi                                |  99 +++++++++++++++++++++++++++++-
 drivers/gpu/drm/panel/panel-lvds.c                               |  23 +++++++-
 drivers/gpu/drm/sun4i/Makefile                                   |   1 +-
 drivers/gpu/drm/sun4i/sun4i_dotclock.c                           |  10 ++-
 drivers/gpu/drm/sun4i/sun4i_drv.c                                |   1 +-
 drivers/gpu/drm/sun4i/sun4i_lvds.c                               | 183 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
 drivers/gpu/drm/sun4i/sun4i_lvds.h                               |  18 +++++-
 drivers/gpu/drm/sun4i/sun4i_tcon.c                               | 247 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 drivers/gpu/drm/sun4i/sun4i_tcon.h                               |  31 +++++++++-
 drivers/gpu/drm/sun4i/sun8i_mixer.c                              |  18 +++++-
 drivers/gpu/drm/sun4i/sun8i_mixer.h                              |   3 +-
 16 files changed, 709 insertions(+), 7 deletions(-)
 create mode 100644 drivers/gpu/drm/sun4i/sun4i_lvds.c
 create mode 100644 drivers/gpu/drm/sun4i/sun4i_lvds.h

base-commit: 3b71239181e5429702387666f1ac70a9e6856cce
git-series 0.9.1

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