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[RFC,v3,0/8] MIPS: CI20: add HDMI out support

Message ID cover.1585503354.git.hns@goldelico.com
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Series MIPS: CI20: add HDMI out support | expand

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H. Nikolaus Schaller March 29, 2020, 5:35 p.m. UTC 
+++ help is needed: driver is not completely working and shows no output signal on the HDMI data and clock lanes
+++ HPD is working and /dev/fb0 does appear
+++ but there is no trigger to initialize the lcdc

* add definition for second jz4780-lcdc
* diverse fixes for yaml schema
* make ingenic-drm driver compatible to ingenic,jz4780-lcd
* converted existing ingenic,lcd.txt to ingenic,lcd.yaml - suggested by Paul Cercueil <paul@crapouillou.net>
* removed blank line before MODULE_DEVICE_TABLE() macro - Paul Cercueil <paul@crapouillou.net>
* added some missing Signed-off:
* removed Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> from the
  recipients list and Cc: since the address is no longer available.
* removed "pinctrl: ingenic: add hdmi-ddc pin control group" from this patch
  series since it is already applied elsewhere (by Linus Walleij <linus.walleij@linaro.org>)

RFC V2 2020-02-28 19:19:40:
* Converted .txt bindings to .yaml (by Sam Ravnborg <sam@ravnborg.org> - big THANKS)

RFC V1 2020-02-26 20:13:06:
This patch series adds HDMI output to the jz4780/CI20 board.

It is based on taking the old 3.18 vendor kernel as well as
an earlier submission from 2015:
https://lore.kernel.org/patchwork/patch/547872/
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.

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


H. Nikolaus Schaller (4):
  dt-bindings: display: convert ingenic,lcd.txt to ingenic,lcd.yaml
  drm: ingenic-drm: add MODULE_DEVICE_TABLE
  drm: ingenic-drm: add support for ingenic,jz4780-lcd
  MIPS: CI20: defconfig: configure for DRM_DW_HDMI_JZ4780

Paul Boddie (3):
  drm: ingenic: add jz4780 Synopsys HDMI driver
  MIPS: DTS: jz4780: account for Synopsys HDMI driver and LCD controller
  MIPS: DTS: CI20: add HDMI setup

Sam Ravnborg (1):
  dt-bindings: display: add ingenic-jz4780-hdmi DT Schema

 .../bindings/display/ingenic,lcd.txt          |  45 ------
 .../bindings/display/ingenic,lcd.yaml         | 128 ++++++++++++++++++
 .../bindings/display/ingenic-jz4780-hdmi.yaml |  82 +++++++++++
 arch/mips/boot/dts/ingenic/ci20.dts           |  64 +++++++++
 arch/mips/boot/dts/ingenic/jz4780.dtsi        |  46 +++++++
 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         |   8 ++
 10 files changed, 460 insertions(+), 45 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/ingenic,lcd.txt
 create mode 100644 Documentation/devicetree/bindings/display/ingenic,lcd.yaml
 create mode 100644 Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml
 create mode 100644 drivers/gpu/drm/ingenic/dw_hdmi-jz4780.c