On Thu, 07 Jan 2021, Daniel Vetter <daniel@xxxxxxxx> wrote: > On Wed, Dec 23, 2020 at 10:14:58AM +0200, Jani Nikula wrote: >> >> Hi Maarten, Maxime, and Thomas - >> >> Here's the DP-HDMI2.1 PCON support topic pull consisting of the series >> [1]. The series is split roughly 50-50 between drm helpers and i915, so >> a topic branch seemed to be the right way to go. >> >> I'll also pull this to drm-intel-next once you've merged to >> drm-misc-next. > > I didn't see this merged into drm-misc-next, so pulled into drm-next. I'm > processing an entire batch of pulls, I'll ping you on irc when it's all > ready for backmerging. Thanks, Rodrigo covered the backmerge. BR, Jani. > > Cheers, Daniel > >> >> BR, >> Jani. >> >> >> [1] https://patchwork.freedesktop.org/series/82098/ >> >> >> topic/dp-hdmi-2.1-pcon-2020-12-23: >> Add support for DP-HDMI2.1 PCON >> >> From the series cover letter: >> >> This patch series attempts to add support for a DP-HDMI2.1 Protocol >> Convertor. The VESA spec for the HDMI2.1 PCON are proposed in Errata >> E5 to DisplayPort_v2.0: >> https://vesa.org/join-vesamemberships/member-downloads/?action=stamp&fileid=42299 >> The details are mentioned in: >> VESA DP-to-HDMI PCON Specification Standalone Document >> https://groups.vesa.org/wg/DP/document/15651 >> >> This series starts with adding support for FRL (Fixed Rate Link) >> Training between the PCON and HDMI2.1 sink. >> As per HDMI2.1 specification, a new data-channel or lane is added in >> FRL mode, by repurposing the TMDS clock Channel. Through FRL, higher >> bit-rate can be supported, ie. up to 12 Gbps/lane (48 Gbps over 4 >> lanes). >> >> With these patches, the HDMI2.1 PCON can be configured to achieve FRL >> training based on the maximum FRL rate supported by the panel, source >> and the PCON. >> The approach is to add the support for FRL training between PCON and >> HDMI2.1 sink and gradually add other blocks for supporting higher >> resolutions and other HDMI2.1 features, that can be supported by pcon >> for the sources that do not natively support HDMI2.1. >> >> This is done before the DP Link training between the source and PCON >> is started. In case of FRL training is not achieved, the PCON will >> work in the regular TMDS mode, without HDMI2.1 feature support. >> Any interruption in FRL training between the PCON and HDMI2.1 sink is >> notified through IRQ_HPD. On receiving the IRQ_HPD the concerned DPCD >> registers are read and FRL training is re-attempted. >> >> Currently, we have tested the FRL training and are able to enable 4K >> display with TGL Platform + Realtek PCON RTD2173 with HDMI2.1 supporting >> panel. >> >> The following changes since commit b3bf99daaee96a141536ce5c60a0d6dba6ec1d23: >> >> drm/i915/display: Defer initial modeset until after GGTT is initialised (2020-11-26 11:01:52 +0000) >> >> are available in the Git repository at: >> >> git://anongit.freedesktop.org/drm/drm-intel tags/topic/dp-hdmi-2.1-pcon-2020-12-23 >> >> for you to fetch changes up to 522508b665df3bbfdf40381d4e61777844b1703f: >> >> drm/i915/display: Let PCON convert from RGB to YCbCr if it can (2020-12-22 17:59:07 +0200) >> >> ---------------------------------------------------------------- >> Add support for DP-HDMI2.1 PCON >> >> From the series cover letter: >> >> This patch series attempts to add support for a DP-HDMI2.1 Protocol >> Convertor. The VESA spec for the HDMI2.1 PCON are proposed in Errata >> E5 to DisplayPort_v2.0: >> https://vesa.org/join-vesamemberships/member-downloads/?action=stamp&fileid=42299 >> The details are mentioned in: >> VESA DP-to-HDMI PCON Specification Standalone Document >> https://groups.vesa.org/wg/DP/document/15651 >> >> This series starts with adding support for FRL (Fixed Rate Link) >> Training between the PCON and HDMI2.1 sink. >> As per HDMI2.1 specification, a new data-channel or lane is added in >> FRL mode, by repurposing the TMDS clock Channel. Through FRL, higher >> bit-rate can be supported, ie. up to 12 Gbps/lane (48 Gbps over 4 >> lanes). >> >> With these patches, the HDMI2.1 PCON can be configured to achieve FRL >> training based on the maximum FRL rate supported by the panel, source >> and the PCON. >> The approach is to add the support for FRL training between PCON and >> HDMI2.1 sink and gradually add other blocks for supporting higher >> resolutions and other HDMI2.1 features, that can be supported by pcon >> for the sources that do not natively support HDMI2.1. >> >> This is done before the DP Link training between the source and PCON >> is started. In case of FRL training is not achieved, the PCON will >> work in the regular TMDS mode, without HDMI2.1 feature support. >> Any interruption in FRL training between the PCON and HDMI2.1 sink is >> notified through IRQ_HPD. On receiving the IRQ_HPD the concerned DPCD >> registers are read and FRL training is re-attempted. >> >> Currently, we have tested the FRL training and are able to enable 4K >> display with TGL Platform + Realtek PCON RTD2173 with HDMI2.1 supporting >> panel. >> >> ---------------------------------------------------------------- >> Ankit Nautiyal (11): >> drm/edid: Parse DSC1.2 cap fields from HFVSDB block >> drm/dp_helper: Add Helpers for FRL Link Training support for DP-HDMI2.1 PCON >> drm/dp_helper: Add support for Configuring DSC for HDMI2.1 Pcon >> drm/dp_helper: Add helpers to configure PCONs RGB-YCbCr Conversion >> drm/i915: Capture max frl rate for PCON in dfp cap structure >> drm/i915: Add support for starting FRL training for HDMI2.1 via PCON >> drm/i915: Check for FRL training before DP Link training >> drm/i915: Read DSC capabilities of the HDMI2.1 PCON encoder >> drm/i915: Add helper functions for calculating DSC parameters for HDMI2.1 >> drm/i915/display: Configure PCON for DSC1.1 to DSC1.2 encoding >> drm/i915/display: Let PCON convert from RGB to YCbCr if it can >> >> Swati Sharma (4): >> drm/edid: Add additional HFVSDB fields for HDMI2.1 >> drm/edid: Parse MAX_FRL field from HFVSDB block >> drm/dp_helper: Add support for link failure detection >> drm/i915: Add support for enabling link status and recovery >> >> drivers/gpu/drm/drm_dp_helper.c | 566 +++++++++++++++++++++ >> drivers/gpu/drm/drm_edid.c | 103 ++++ >> drivers/gpu/drm/i915/display/intel_ddi.c | 6 +- >> drivers/gpu/drm/i915/display/intel_display_types.h | 10 + >> drivers/gpu/drm/i915/display/intel_dp.c | 440 +++++++++++++++- >> drivers/gpu/drm/i915/display/intel_dp.h | 7 +- >> drivers/gpu/drm/i915/display/intel_hdmi.c | 233 +++++++++ >> drivers/gpu/drm/i915/display/intel_hdmi.h | 7 + >> include/drm/drm_connector.h | 49 ++ >> include/drm/drm_dp_helper.h | 218 ++++++++ >> include/drm/drm_edid.h | 30 ++ >> 11 files changed, 1650 insertions(+), 19 deletions(-) >> >> -- >> Jani Nikula, Intel Open Source Graphics Center -- Jani Nikula, Intel Open Source Graphics Center _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
