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From: Eric Anholt <eric@anholt.net>
To: Maxime Ripard <maxime.ripard@bootlin.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Sean Paul <seanpaul@chromium.org>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	Daniel Vetter <daniel.vetter@intel.com>,
	David Airlie <airlied@linux.ie>
Cc: Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
	linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	eben@raspberrypi.org
Subject: Re: [PATCH 3/7] drm/edid: Allow to ignore the HDMI monitor mode
Date: Mon, 04 Mar 2019 12:02:16 -0800	[thread overview]
Message-ID: <87sgw276if.fsf@anholt.net> (raw)
In-Reply-To: <b346467ee3b9f2b6651e269886cbbdfa94b96b54.1551711042.git-series.maxime.ripard@bootlin.com>


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Maxime Ripard <maxime.ripard@bootlin.com> writes:

> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

Googling for users of the firmware's hdmi_drive= flag, I'm seeing lots
of people with hdmi_drive=2 (force HDMI mode) due to Raspberry Pi not
allowing HDMI audio with DMT modes, which it looks like DRM does allow.

The only users of hdmi_drive=1 (force HDMI mode) I'm seeing are people
setting things up for non-EDID monitors, but I think the expectation in
DRM is that people would provide an EDID.  So, I'm not sure it makes
sense to support an equivalent of this flag?  Or, it should probably be
part of specifying a custom mode on the command line.

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_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Eric Anholt <eric@anholt.net>
To: Maxime Ripard <maxime.ripard@bootlin.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Sean Paul <seanpaul@chromium.org>Maxime Ripard
	<maxime.ripard@bootlin.com>,
	Daniel Vetter <daniel.vetter@intel.com>,
	David Airlie <airlied@linux.ie>
Cc: Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
	linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	eben@raspberrypi.org
Subject: Re: [PATCH 3/7] drm/edid: Allow to ignore the HDMI monitor mode
Date: Mon, 04 Mar 2019 12:02:16 -0800	[thread overview]
Message-ID: <87sgw276if.fsf@anholt.net> (raw)
In-Reply-To: <b346467ee3b9f2b6651e269886cbbdfa94b96b54.1551711042.git-series.maxime.ripard@bootlin.com>


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Maxime Ripard <maxime.ripard@bootlin.com> writes:

> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

Googling for users of the firmware's hdmi_drive= flag, I'm seeing lots
of people with hdmi_drive=2 (force HDMI mode) due to Raspberry Pi not
allowing HDMI audio with DMT modes, which it looks like DRM does allow.

The only users of hdmi_drive=1 (force HDMI mode) I'm seeing are people
setting things up for non-EDID monitors, but I think the expectation in
DRM is that people would provide an EDID.  So, I'm not sure it makes
sense to support an equivalent of this flag?  Or, it should probably be
part of specifying a custom mode on the command line.

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_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  parent reply	other threads:[~2019-03-04 20:02 UTC|newest]

Thread overview: 87+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-04 14:52 [PATCH 0/7] drm/vc4: Allow for more boot-time configuration Maxime Ripard
2019-03-04 14:52 ` Maxime Ripard
2019-03-04 14:52 ` [PATCH 1/7] drm/vc4: hdmi: Check that the monitor supports HDMI audio Maxime Ripard
2019-03-04 14:52   ` Maxime Ripard
2019-03-04 15:10   ` Paul Kocialkowski
2019-03-04 15:10     ` Paul Kocialkowski
2019-03-04 15:54   ` Stefan Wahren
2019-03-04 15:54     ` Stefan Wahren
2019-03-04 18:28     ` Eric Anholt
2019-03-04 18:28       ` Eric Anholt
2019-03-04 20:06       ` Stefan Wahren
2019-03-04 20:06         ` Stefan Wahren
2019-03-04 21:09         ` Eric Anholt
2019-03-04 21:09           ` Eric Anholt
2019-03-04 14:52 ` [PATCH 2/7] drm/edid: Allow to ignore the audio EDID data Maxime Ripard
2019-03-04 14:52   ` Maxime Ripard
2019-03-04 15:47   ` Jani Nikula
2019-03-04 15:47     ` Jani Nikula
2019-03-04 15:51     ` Adam Jackson
2019-03-04 15:51       ` Adam Jackson
2019-03-05  8:08     ` Maxime Ripard
2019-03-05  8:08       ` Maxime Ripard
2019-03-05 10:33       ` Jani Nikula
2019-03-05 10:33         ` Jani Nikula
2019-03-05 15:08       ` Adam Jackson
2019-03-05 15:08         ` Adam Jackson
2019-03-04 15:59   ` Ville Syrjälä
2019-03-04 15:59     ` Ville Syrjälä
2019-03-04 19:53   ` Eric Anholt
2019-03-04 19:53     ` Eric Anholt
2019-03-04 20:05     ` Alex Deucher
2019-03-04 20:05       ` Alex Deucher
2019-03-05  9:12       ` Maxime Ripard
2019-03-05  9:12         ` Maxime Ripard
2019-03-05 15:24         ` Ville Syrjälä
2019-03-05 15:24           ` Ville Syrjälä
2019-03-05 19:15           ` Ville Syrjälä
2019-03-05 19:15             ` Ville Syrjälä
2019-03-05 19:21             ` Alex Deucher
2019-03-05 19:36               ` Ville Syrjälä
2019-03-05 19:36                 ` Ville Syrjälä
2019-03-13 10:44                 ` Takashi Iwai
2019-03-13 10:44                   ` Takashi Iwai
2019-03-13 14:03                   ` Maxime Ripard
2019-03-13 14:03                     ` Maxime Ripard
2019-03-05 18:11         ` Eric Anholt
2019-03-05 18:11           ` Eric Anholt
2019-03-11 13:07           ` Daniel Vetter
2019-03-11 13:07             ` Daniel Vetter
2019-03-05 21:47         ` Eric Anholt
2019-03-05 21:47           ` Eric Anholt
2019-03-06  8:52           ` Maxime Ripard
2019-03-06  8:52             ` Maxime Ripard
2019-03-06 13:22           ` Maxime Ripard
2019-03-06 13:22             ` Maxime Ripard
2019-03-06 17:51             ` Eric Anholt
2019-03-06 17:51               ` Eric Anholt
2019-03-04 14:52 ` [PATCH 3/7] drm/edid: Allow to ignore the HDMI monitor mode Maxime Ripard
2019-03-04 14:52   ` Maxime Ripard
2019-03-04 15:14   ` Paul Kocialkowski
2019-03-04 15:14     ` Paul Kocialkowski
2019-03-04 15:48   ` Jani Nikula
2019-03-04 15:48     ` Jani Nikula
2019-03-04 20:02   ` Eric Anholt [this message]
2019-03-04 20:02     ` Eric Anholt
2019-03-05  9:24     ` Maxime Ripard
2019-03-05  9:24       ` Maxime Ripard
2019-03-04 14:52 ` [PATCH 4/7] drm/modes: Rewrite the command line parser Maxime Ripard
2019-03-04 14:52   ` Maxime Ripard
2019-03-04 14:52 ` [PATCH 5/7] drm/modes: Support modes names on the command line Maxime Ripard
2019-03-04 14:52   ` Maxime Ripard
2019-03-04 14:52 ` [PATCH 6/7] drm/modes: Allow to specify rotation and reflection on the commandline Maxime Ripard
2019-03-04 14:52   ` Maxime Ripard
2019-03-04 14:52 ` [PATCH 7/7] drm/modes: Parse overscan properties Maxime Ripard
2019-03-04 14:52   ` Maxime Ripard
2019-03-04 15:21 ` [PATCH 0/7] drm/vc4: Allow for more boot-time configuration Peter Stuge
2019-03-04 15:21   ` Peter Stuge
2019-03-04 15:56   ` Maxime Ripard
2019-03-04 15:56     ` Maxime Ripard
2019-03-04 15:44 ` Stefan Wahren
2019-03-04 15:44   ` Stefan Wahren
2019-03-04 20:06 ` Eric Anholt
2019-03-04 20:06   ` Eric Anholt
2019-03-05  9:14   ` Maxime Ripard
2019-03-05  9:14     ` Maxime Ripard
2019-03-11 13:00     ` Daniel Vetter
2019-03-11 13:00       ` Daniel Vetter

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