[PATCH 0/8] drm/vc4: hdmi: Support the 4k @ 60Hz modes

[Maxime Ripard]

Hi,

Here is a series that enables the higher resolutions on the HDMI0 Controller
found in the BCM2711 (RPi4).

In order to work it needs a few adjustments to config.txt, most notably to
enable the enable_hdmi_4kp60 and force_turbo options.

The firmware also has a glitch at the moment and will not properly release the
BSC controllers, which will make the EDID retrieval fail.

We can work around this using the following config.txt options:

disable_fw_kms_setup=1
hdmi_edid_file:0=1
hdmi_edid_filename:0=1366x768.bin
hdmi_ignore_edid:0=1
hdmi_edid_file:1=1
hdmi_edid_filename:1=1366x768.bin
hdmi_ignore_edid:1=1

A fix will come for the firmware eventually.

Let me know what you think,
Maxime

Maxime Ripard (8):
  clk: Add range accessors
  drm/vc4: hvs: Make the HVS bind first
  drm/vc4: hdmi: Properly compute the BVB clock rate
  drm/vc4: hdmi: Check and warn if we can't reach 4kp60 frequencies
  drm/vc4: hdmi: Enable the scrambler
  drm/vc4: hdmi: Raise the maximum clock rate
  drm/vc4: plane: Fix typo in scaler width and height
  drm/vc4: plane: Remove redundant assignment

 drivers/clk/clk.c                   | 30 ++++++++++
 drivers/gpu/drm/vc4/vc4_drv.c       | 11 +++-
 drivers/gpu/drm/vc4/vc4_hdmi.c      | 88 ++++++++++++++++++++++++++---
 drivers/gpu/drm/vc4/vc4_hdmi.h      |  8 +++
 drivers/gpu/drm/vc4/vc4_hdmi_regs.h |  3 +
 drivers/gpu/drm/vc4/vc4_plane.c     |  5 +-
 include/linux/clk.h                 | 16 ++++++
 7 files changed, 148 insertions(+), 13 deletions(-)

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2.29.2