[PATCH v3 0/9] drm/vc4: hdmi: Support the 4k @ 60Hz modes

From: Maxime Ripard <maxime@cerno.tech>
To: dri-devel@lists.freedesktop.org,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Maxime Ripard <maxime@cerno.tech>
Cc: Tim Gover <tim.gover@raspberrypi.com>,
	Dave Stevenson <dave.stevenson@raspberrypi.com>,
	David Airlie <airlied@linux.ie>,
	bcm-kernel-feedback-list@broadcom.com,
	linux-rpi-kernel@lists.infradead.org,
	Daniel Vetter <daniel.vetter@intel.com>,
	Phil Elwell <phil@raspberrypi.com>,
	Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: [PATCH v3 0/9] drm/vc4: hdmi: Support the 4k @ 60Hz modes
Date: Tue, 13 Apr 2021 16:54:32 +0200	[thread overview]
Message-ID: <20210413145441.483977-1-maxime@cerno.tech> (raw)

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 option.

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

---

Changes from v2:
  - Gathered the various tags
  - Added Cc stable when relevant
  - Split out the check to test whether the scrambler is required into
    an helper
  - Fixed a bug where the scrambler state wouldn't be tracked properly
    if it was enabled at boot

Changes from v1:
  - Dropped the range accessors
  - Drop the mention of force_turbo
  - Reordered the SCRAMBLER_CTL register to match the offset
  - Removed duplicate HDMI_14_MAX_TMDS_CLK define
  - Warn about enable_hdmi_4kp60 only if there's some modes that can't be reached
  - Rework the BVB clock computation

Maxime Ripard (9):
  drm/vc4: txp: Properly set the possible_crtcs mask
  drm/vc4: crtc: Skip the TXP
  drm/vc4: Rework the encoder retrieval code
  drm/vc4: hdmi: Prevent clock unbalance
  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

 drivers/gpu/drm/vc4/vc4_crtc.c      |  28 ++++++-
 drivers/gpu/drm/vc4/vc4_drv.c       |  47 ++++++++++-
 drivers/gpu/drm/vc4/vc4_drv.h       |  10 +++
 drivers/gpu/drm/vc4/vc4_hdmi.c      | 122 ++++++++++++++++++++++++++--
 drivers/gpu/drm/vc4/vc4_hdmi.h      |   8 ++
 drivers/gpu/drm/vc4/vc4_hdmi_regs.h |   3 +
 drivers/gpu/drm/vc4/vc4_txp.c       |   2 +-
 7 files changed, 207 insertions(+), 13 deletions(-)

-- 
2.30.2

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel