[Letux-kernel] [RFC 0/8] MIPS: CI20: add HDMI out support

H. Nikolaus Schaller hns at goldelico.com
Wed Feb 26 20:12:52 CET 2020


This patch series adds HDMI output to the jz4780/CI20 board.

It is based on taking the old 3.18 vendor kernel and trying
to achieve the same with modern DTS setup and new/modified
drivers.

Unfortunately, in this first RFC, only EDID and creation of
/dev/fb0 are working. Also, HDMI hot plugging is detected.

But there is no HDMI output signal. So some tiny piece seems
to be missing to enable/configure the Synposys HDMI controller.

We need help from the community to fix this.

Note: device tree bindings are from 2015 and still seem to
fit - except they are not in yaml format.

Original authors of most patches are
* Paul Boddie <paul at boddie.org.uk>
* Zubair Lutfullah Kakakhel <Zubair.Kakakhel at imgtec.com>


H. Nikolaus Schaller (2):
  drm: ingenic-drm: add MODULE_DEVICE_TABLE
  MIPS: CI20: defconfig: configure for DRM_DW_HDMI_JZ4780

Paul Boddie (4):
  drm: ingenic: add jz4780 Synopsys HDMI driver.
  pinctrl: ingenic: add hdmi-ddc pin control group
  MIPS: DTS: jz4780: account for Synopsys HDMI driver and LCD controller
  MIPS: DTS: CI20: add HDMI setup

Zubair Lutfullah Kakakhel (2):
  dt-bindings: video: Add jz4780-lcd binding
  dt-bindings: video: Add jz4780-hdmi binding

 .../bindings/display/ingenic-jz4780-hdmi.txt  |  41 ++++++
 .../bindings/display/ingenic-jz4780-lcd.txt   |  39 ++++++
 arch/mips/boot/dts/ingenic/ci20.dts           |  64 ++++++++++
 arch/mips/boot/dts/ingenic/jz4780.dtsi        |  32 +++++
 arch/mips/configs/ci20_defconfig              |   3 +
 drivers/gpu/drm/ingenic/Kconfig               |   8 ++
 drivers/gpu/drm/ingenic/Makefile              |   1 +
 drivers/gpu/drm/ingenic/dw_hdmi-jz4780.c      | 120 ++++++++++++++++++
 drivers/gpu/drm/ingenic/ingenic-drm.c         |   2 +
 drivers/pinctrl/pinctrl-ingenic.c             |   7 +
 10 files changed, 317 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.txt
 create mode 100644 Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.txt
 create mode 100644 drivers/gpu/drm/ingenic/dw_hdmi-jz4780.c

-- 
2.23.0



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