| From: |
| Cristian Ciocaltea <cristian.ciocaltea-AT-collabora.com> |
| To: |
| Andrzej Hajda <andrzej.hajda-AT-intel.com>, Neil Armstrong <neil.armstrong-AT-linaro.org>, Robert Foss <rfoss-AT-kernel.org>, Laurent Pinchart <Laurent.pinchart-AT-ideasonboard.com>, Jonas Karlman <jonas-AT-kwiboo.se>, Jernej Skrabec <jernej.skrabec-AT-gmail.com>, Maarten Lankhorst <maarten.lankhorst-AT-linux.intel.com>, Maxime Ripard <mripard-AT-kernel.org>, Thomas Zimmermann <tzimmermann-AT-suse.de>, David Airlie <airlied-AT-gmail.com>, Simona Vetter <simona-AT-ffwll.ch>, Sandy Huang <hjc-AT-rock-chips.com>, Heiko Stübner <heiko-AT-sntech.de>, Andy Yan <andy.yan-AT-rock-chips.com> |
| Subject: |
| [PATCH RESEND v4 0/4] Add HDMI 2.0 support to DW HDMI QP TX |
| Date: |
| Mon, 23 Mar 2026 19:45:26 +0200 |
| Message-ID: |
| <20260323-dw-hdmi-qp-scramb-v4-0-1d99df84883e@collabora.com> |
| Cc: |
| kernel-AT-collabora.com, dri-devel-AT-lists.freedesktop.org, linux-kernel-AT-vger.kernel.org, linux-arm-kernel-AT-lists.infradead.org, linux-rockchip-AT-lists.infradead.org, Diederik de Haas <diederik-AT-cknow-tech.com>, Maud Spierings <maud_spierings-AT-hotmail.com> |
| Archive-link: |
| Article |
This patch series provides the missing support for high TMDS clock ratio
and scrambling to DW HDMI QP TX library, required for handling HDMI 2.0
display modes on RK3576 & RK3588 SoCs.
In order to allow addressing the SCDC status lost on sink disconnects,
it adds an atomic variant of the drm_bridge_funcs.detect() callback and
a new drm_bridge_detect_ctx() helper, which is further used in
drm_bridge_connector to switch to using the ->detect_ctx() hook.
Furthermore, it optimizes HPD event handling in dw_hdmi_qp Rockchip
platform driver to run the detect cycle on the affected connector only.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
---
Changes in v4:
- Fixed conflicts while rebasing onto latest drm-misc-next
- Link to v3: https://lore.kernel.org/r/20260119-dw-hdmi-qp-scramb-v3-0...
Changes in v3:
- Used drm_bridge_helper_reset_crtc() helper to reset the display
pipeline and got rid of some boilerplate code (Maxime)
- Rebased onto latest drm-misc-next
- Link to v2: https://lore.kernel.org/r/20260113-dw-hdmi-qp-scramb-v2-0...
Changes in v2:
- Collected Tested-by tags from Diederik and Maud
- Rebased onto latest drm-misc-next
- Ensured the recently introduced 'no-hpd' support for dealing with
unconnected/repurposed/broken HPD pin is limited to HDMI 1.4 rates
- Link to v1: https://lore.kernel.org/r/20251203-dw-hdmi-qp-scramb-v1-0...
---
Cristian Ciocaltea (4):
drm/bridge: Add ->detect_ctx hook and drm_bridge_detect_ctx()
drm/bridge-connector: Switch to using ->detect_ctx hook
drm/bridge: dw-hdmi-qp: Add high TMDS clock ratio and scrambling support
drm/rockchip: dw_hdmi_qp: Do not send HPD events for all connectors
drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 167 ++++++++++++++++++++++---
drivers/gpu/drm/display/drm_bridge_connector.c | 73 +++++------
drivers/gpu/drm/drm_bridge.c | 58 +++++++++
drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 44 +++----
include/drm/drm_bridge.h | 30 +++++
5 files changed, 296 insertions(+), 76 deletions(-)
---
base-commit: 0dd7a23da214279cfb77b0eb03c38614867524d7
change-id: 20251203-dw-hdmi-qp-scramb-cdbd8b57ccf9
--
Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
