[PATCH v8 00/10] 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>,
	Daniel Vetter <daniel.vetter@intel.com>,
	David Airlie <airlied@linux.ie>
Cc: linux-rpi-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, Maxime Ripard <mripard@kernel.org>,
	Nicolas Saenz Julienne <nsaenz@kernel.org>,
	bcm-kernel-feedback-list@broadcom.com,
	Emma Anholt <emma@anholt.net>,
	Dave Stevenson <dave.stevenson@raspberrypi.com>,
	Phil Elwell <phil@raspberrypi.com>,
	Tim Gover <tim.gover@raspberrypi.com>,
	Dom Cobley <dom@raspberrypi.com>
Subject: [PATCH v8 00/10] drm/vc4: hdmi: Support the 4k @ 60Hz modes
Date: Mon, 25 Oct 2021 17:28:53 +0200	[thread overview]
Message-ID: <20211025152903.1088803-1-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.

Let me know what you think,
Maxime

---

Changes from v7:
  - Rebased on current drm-misc-next

Changes from v6:
  - Rebased on current drm-misc-next
  - Removed stale clk_request pointer

Changes from v5:
  - Fixed unused variables warning

Changes from v4:
  - Removed the patches already applied
  - Added various fixes for the issues that have been discovered on the
    downstream tree

Changes from v3:
  - Rework the encoder retrieval code that was broken on the RPi3 and older
  - Fix a scrambling enabling issue on some display

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 (10):
  drm/vc4: hdmi: Remove the DDC probing for status detection
  drm/vc4: hdmi: Fix HPD GPIO detection
  drm/vc4: Make vc4_crtc_get_encoder public
  drm/vc4: crtc: Add encoder to vc4_crtc_config_pv prototype
  drm/vc4: crtc: Rework the encoder retrieval code (again)
  drm/vc4: crtc: Add some logging
  drm/vc4: Leverage the load tracker on the BCM2711
  drm/vc4: hdmi: Raise the maximum clock rate
  drm/vc4: hdmi: Enable the scrambler on reconnection
  drm/vc4: Increase the core clock based on HVS load

 drivers/gpu/drm/vc4/vc4_crtc.c    |  60 ++++++++------
 drivers/gpu/drm/vc4/vc4_debugfs.c |   7 +-
 drivers/gpu/drm/vc4/vc4_drv.h     |   8 +-
 drivers/gpu/drm/vc4/vc4_hdmi.c    |  13 +--
 drivers/gpu/drm/vc4/vc4_kms.c     | 126 +++++++++++++++++++++++++-----
 drivers/gpu/drm/vc4/vc4_plane.c   |   5 --
 6 files changed, 157 insertions(+), 62 deletions(-)

-- 
2.31.1