linux-kernel - Re: [PATCH v2 0/4] Add HDMI 2.0 support to DW HDMI QP TX

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <0b28ae6d-295d-4958-9571-190fedd95efe@collabora.com>
Date: Tue, 13 Jan 2026 00:40:46 +0200
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Chris Morgan <macromorgan@...mail.com>
Cc: kernel@...labora.com, dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org,
 Diederik de Haas <diederik@...ow-tech.com>,
 Maud Spierings <maud_spierings@...mail.com>,
 Andrzej Hajda <andrzej.hajda@...el.com>,
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>,
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Sandy Huang <hjc@...k-chips.com>, Heiko Stübner
 <heiko@...ech.de>, Andy Yan <andy.yan@...k-chips.com>
Subject: Re: [PATCH v2 0/4] Add HDMI 2.0 support to DW HDMI QP TX

On 1/13/26 12:26 AM, Cristian Ciocaltea wrote:
> 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 ->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@...labora.com>
> ---
> 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

Chris, could you please confirm no-hpd is still functional with this series on
your Gameforce Ace board when testing with a HDMI 2.0 display?

Thanks,
Cristian