From: "Maxime Ripard" <mripard@kernel.org>
To: "Nicolas Frattaroli" <nicolas.frattaroli@collabora.com>
Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org,
kernel@collabora.com, linux-arm-kernel@lists.infradead.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rockchip@lists.infradead.org,
"Alex Deucher" <alexander.deucher@amd.com>,
"Andrzej Hajda" <andrzej.hajda@intel.com>,
"Andy Yan" <andy.yan@rock-chips.com>,
"Christian König" <christian.koenig@amd.com>,
"David Airlie" <airlied@gmail.com>,
"Dmitry Baryshkov" <lumag@kernel.org>,
"Harry Wentland" <harry.wentland@amd.com>,
"Heiko Stübner" <heiko@sntech.de>,
"Jani Nikula" <jani.nikula@linux.intel.com>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"Jonas Karlman" <jonas@kwiboo.se>,
"Jonathan Corbet" <corbet@lwn.net>,
"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>,
"Laurent Pinchart" <Laurent.pinchart@ideasonboard.com>,
"Leo Li" <sunpeng.li@amd.com>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Rob Herring" <robh@kernel.org>, "Robert Foss" <rfoss@kernel.org>,
"Rodrigo Siqueira" <siqueira@igalia.com>,
"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
"Sandy Huang" <hjc@rock-chips.com>,
"Sascha Hauer" <s.hauer@pengutronix.de>,
"Simona Vetter" <simona@ffwll.ch>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Tvrtko Ursulin" <tursulin@ursulin.net>
Subject: Re: [PATCH v8 06/20] drm/display: hdmi-state-helper: Try subsampling in mode_valid
Date: Mon, 23 Feb 2026 10:58:40 +0000 [thread overview]
Message-ID: <37669584817bdca3d569e80047c94949@kernel.org> (raw)
In-Reply-To: <20260216-color-format-v8-6-5722ce175dd5@collabora.com>
On Mon, 16 Feb 2026 14:01:20 +0100, Nicolas Frattaroli wrote:
> drm_hdmi_connector_mode_valid assumes modes are only valid if they work
> with RGB. The reality is more complex however: YCbCr 4:2:0
> chroma-subsampled modes only require half the pixel clock that the same
> mode would require in RGB.
>
>
> [ ... ]
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Thanks!
Maxime
next prev parent reply other threads:[~2026-02-23 10:58 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-16 13:01 [PATCH v8 00/20] Add new general DRM property "color format" Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 01/20] drm/amd/display: Remove unnecessary SIGNAL_TYPE_HDMI_TYPE_A check Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 02/20] drm: Add new general DRM property "color format" Nicolas Frattaroli
2026-02-23 16:17 ` Jani Nikula
2026-02-24 9:03 ` Maxime Ripard
2026-02-24 14:38 ` Maxime Ripard
2026-02-16 13:01 ` [PATCH v8 03/20] drm: Add enum conversions for drm_color_format_enum Nicolas Frattaroli
2026-02-24 14:39 ` Maxime Ripard
2026-02-16 13:01 ` [PATCH v8 04/20] drm/bridge: Act on the DRM color format property Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 05/20] drm/display: hdmi-state-helper: Act on color format DRM property Nicolas Frattaroli
2026-02-24 14:41 ` Maxime Ripard
2026-02-16 13:01 ` [PATCH v8 06/20] drm/display: hdmi-state-helper: Try subsampling in mode_valid Nicolas Frattaroli
2026-02-23 10:58 ` Maxime Ripard [this message]
2026-02-16 13:01 ` [PATCH v8 07/20] drm/i915: Implement the "color format" DRM property Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 08/20] drm/amdgpu: Implement " Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 09/20] drm/rockchip: Add YUV422 output mode constants for VOP2 Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 10/20] drm/rockchip: vop2: Add RK3576 to the RG swap special case Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 11/20] drm/rockchip: vop2: Recognise 10-bit YUV422 as YUV format Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 12/20] drm/rockchip: vop2: Set correct output format for RK3576 YUV422 Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 13/20] drm/bridge: dw-hdmi-qp: Implement atomic_get_output_bus_fmts Nicolas Frattaroli
2026-02-22 10:42 ` Cristian Ciocaltea
2026-02-23 11:21 ` Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 14/20] drm/rockchip: dw_hdmi_qp: Implement "color format" DRM property Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 15/20] drm/rockchip: dw_hdmi_qp: Set supported_formats platdata Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 16/20] drm/connector: Register color format property on HDMI connectors Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 17/20] drm/tests: hdmi: Add tests for the color_format property Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 18/20] drm/tests: hdmi: Add tests for HDMI helper's mode_valid Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 19/20] drm/tests: bridge: Add KUnit tests for bridge chain format selection Nicolas Frattaroli
2026-02-16 13:01 ` [PATCH v8 20/20] drm/bridge: Document " Nicolas Frattaroli
2026-02-16 20:36 ` Randy Dunlap
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=37669584817bdca3d569e80047c94949@kernel.org \
--to=mripard@kernel.org \
--cc=Laurent.pinchart@ideasonboard.com \
--cc=airlied@gmail.com \
--cc=alexander.deucher@amd.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=andrzej.hajda@intel.com \
--cc=andy.yan@rock-chips.com \
--cc=christian.koenig@amd.com \
--cc=corbet@lwn.net \
--cc=dri-devel@lists.freedesktop.org \
--cc=harry.wentland@amd.com \
--cc=heiko@sntech.de \
--cc=hjc@rock-chips.com \
--cc=intel-gfx@lists.freedesktop.org \
--cc=intel-xe@lists.freedesktop.org \
--cc=jani.nikula@linux.intel.com \
--cc=jernej.skrabec@gmail.com \
--cc=jonas@kwiboo.se \
--cc=joonas.lahtinen@linux.intel.com \
--cc=kernel@collabora.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=lumag@kernel.org \
--cc=maarten.lankhorst@linux.intel.com \
--cc=neil.armstrong@linaro.org \
--cc=nicolas.frattaroli@collabora.com \
--cc=rfoss@kernel.org \
--cc=robh@kernel.org \
--cc=rodrigo.vivi@intel.com \
--cc=s.hauer@pengutronix.de \
--cc=simona@ffwll.ch \
--cc=siqueira@igalia.com \
--cc=sunpeng.li@amd.com \
--cc=tursulin@ursulin.net \
--cc=tzimmermann@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox