linux-kernel - [PATCH v8 00/10] drm/vc4: hdmi: Support the 4k @ 60Hz modes

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Message-Id: <20211025152903.1088803-1-maxime@cerno.tech>
Date:   Mon, 25 Oct 2021 17:28:53 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     dri-devel@...ts.freedesktop.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Maxime Ripard <maxime@...no.tech>,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>
Cc:     linux-rpi-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Maxime Ripard <mripard@...nel.org>,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com,
        Emma Anholt <emma@...olt.net>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Phil Elwell <phil@...pberrypi.com>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Dom Cobley <dom@...pberrypi.com>
Subject: [PATCH v8 00/10] drm/vc4: hdmi: Support the 4k @ 60Hz modes

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