[00/14] Add some DRM bridge drivers support for i.MX8qm/qxp SoCs

Message

Liu Ying Dec. 17, 2020, 9:59 a.m. UTC

Hi,

This series adds some DRM bridge drivers support for i.MX8qm/qxp SoCs.

The bridges may chain one by one to form display pipes to support
LVDS displays.  The relevant display controller is DPU embedded in
i.MX8qm/qxp SoCs.

The DPU KMS driver can be found at:
https://www.spinics.net/lists/arm-kernel/msg862106.html

This series supports the following display pipes:
1) i.MX8qxp:
prefetch eng -> DPU -> pixel combiner -> pixel link ->
pixel link to DPI(PXL2DPI) -> LVDS display bridge(LDB)

2) i.MX8qm:
prefetch eng -> DPU -> pixel combiner -> pixel link -> LVDS display bridge(LDB)


Patch 1/14 adds LVDS PHY configuration options, which has already been sent
with the following series to add Mixel combo PHY found in i.MX8qxp:
https://www.spinics.net/lists/arm-kernel/msg862560.html

Patch 2/14 and 3/14 add bus formats used by PXL2DPI.

Patch 4/14 ~ 13/14 add drm bridge drivers and dt-bindings support for the bridges.

Patch 14/14 updates MAINTAINERS.


I've tested this series with a koe,tx26d202vm0bwa dual link LVDS panel and
a LVDS to HDMI bridge(with a downstream drm bridge driver).


Welcome comments, thanks.

Liu Ying (14):
  phy: Add LVDS configuration options
  media: uapi: Add some RGB bus formats for i.MX8qm/qxp pixel combiner
  media: docs: Add some RGB bus formats for i.MX8qm/qxp pixel combiner
  dt-bindings: display: bridge: Add i.MX8qm/qxp pixel combiner binding
  drm/bridge: imx: Add i.MX8qm/qxp pixel combiner support
  dt-bindings: display: bridge: Add i.MX8qm/qxp display pixel link
    binding
  drm/bridge: imx: Add i.MX8qm/qxp display pixel link support
  dt-bindings: display: bridge: Add i.MX8qxp pixel link to DPI binding
  drm/bridge: imx: Add i.MX8qxp pixel link to DPI support
  drm/bridge: imx: Add LDB driver helper support
  dt-bindings: display: bridge: Add i.MX8qm/qxp LVDS display bridge
    binding
  drm/bridge: imx: Add LDB support for i.MX8qxp
  drm/bridge: imx: Add LDB support for i.MX8qm
  MAINTAINERS: add maintainer for DRM bridge drivers for i.MX SoCs

 .../bindings/display/bridge/fsl,imx8qxp-ldb.yaml   | 185 +++++
 .../display/bridge/fsl,imx8qxp-pixel-combiner.yaml | 160 +++++
 .../display/bridge/fsl,imx8qxp-pixel-link.yaml     | 128 ++++
 .../display/bridge/fsl,imx8qxp-pxl2dpi.yaml        | 134 ++++
 .../userspace-api/media/v4l/subdev-formats.rst     | 156 +++++
 MAINTAINERS                                        |  10 +
 drivers/gpu/drm/bridge/Kconfig                     |   2 +
 drivers/gpu/drm/bridge/Makefile                    |   1 +
 drivers/gpu/drm/bridge/imx/Kconfig                 |  52 ++
 drivers/gpu/drm/bridge/imx/Makefile                |   6 +
 drivers/gpu/drm/bridge/imx/imx-ldb-helper.c        | 248 +++++++
 drivers/gpu/drm/bridge/imx/imx8qm-ldb.c            | 589 ++++++++++++++++
 drivers/gpu/drm/bridge/imx/imx8qxp-ldb.c           | 762 +++++++++++++++++++++
 .../gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c    | 452 ++++++++++++
 drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c    | 411 +++++++++++
 drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c       | 494 +++++++++++++
 include/drm/bridge/imx_ldb_helper.h                |  98 +++
 include/linux/phy/phy-lvds.h                       |  48 ++
 include/linux/phy/phy.h                            |   4 +
 include/uapi/linux/media-bus-format.h              |   6 +-
 20 files changed, 3945 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-ldb.yaml
 create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
 create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml
 create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml
 create mode 100644 drivers/gpu/drm/bridge/imx/Kconfig
 create mode 100644 drivers/gpu/drm/bridge/imx/Makefile
 create mode 100644 drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
 create mode 100644 drivers/gpu/drm/bridge/imx/imx8qm-ldb.c
 create mode 100644 drivers/gpu/drm/bridge/imx/imx8qxp-ldb.c
 create mode 100644 drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
 create mode 100644 drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
 create mode 100644 drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
 create mode 100644 include/drm/bridge/imx_ldb_helper.h
 create mode 100644 include/linux/phy/phy-lvds.h