From: Maxime Ripard <maxime.ripard@bootlin.com>
To: Eric Anholt <eric@anholt.net>
Cc: eben@raspberrypi.org, David Airlie <airlied@linux.ie>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
dri-devel@lists.freedesktop.org,
Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
Sean Paul <seanpaul@chromium.org>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Daniel Vetter <daniel.vetter@intel.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/7] drm/edid: Allow to ignore the HDMI monitor mode
Date: Tue, 5 Mar 2019 10:24:06 +0100 [thread overview]
Message-ID: <20190305092406.q34o437s4tayw4ca@flea> (raw)
In-Reply-To: <87sgw276if.fsf@anholt.net>
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Hi Eric,
On Mon, Mar 04, 2019 at 12:02:16PM -0800, Eric Anholt wrote:
> 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.
That would be adding one more check before registering the card, or
even coming up with something else entirely to mark the output as
non-working at the moment.
Maybe we should start the discussion with Mark Brown about this, and
see what his opinion is?
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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next prev parent reply other threads:[~2019-03-05 9:24 UTC|newest]
Thread overview: 44+ 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 ` [PATCH 1/7] drm/vc4: hdmi: Check that the monitor supports HDMI audio Maxime Ripard
2019-03-04 15:10 ` Paul Kocialkowski
2019-03-04 15:54 ` Stefan Wahren
2019-03-04 18:28 ` Eric Anholt
2019-03-04 20:06 ` Stefan Wahren
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 15:47 ` Jani Nikula
2019-03-04 15:51 ` Adam Jackson
2019-03-05 8:08 ` Maxime Ripard
2019-03-05 10:33 ` Jani Nikula
2019-03-05 15:08 ` Adam Jackson
2019-03-04 15:59 ` Ville Syrjälä
2019-03-04 19:53 ` Eric Anholt
2019-03-04 20:05 ` Alex Deucher
2019-03-05 9:12 ` Maxime Ripard
2019-03-05 15:24 ` Ville Syrjälä
2019-03-05 19:15 ` Ville Syrjälä
2019-03-05 19:21 ` Alex Deucher
2019-03-05 19:36 ` Ville Syrjälä
2019-03-13 10:44 ` Takashi Iwai
2019-03-13 14:03 ` Maxime Ripard
2019-03-05 18:11 ` Eric Anholt
2019-03-11 13:07 ` Daniel Vetter
2019-03-05 21:47 ` Eric Anholt
2019-03-06 8:52 ` Maxime Ripard
2019-03-06 13:22 ` Maxime Ripard
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 15:14 ` Paul Kocialkowski
2019-03-04 15:48 ` Jani Nikula
2019-03-04 20:02 ` Eric Anholt
2019-03-05 9:24 ` Maxime Ripard [this message]
2019-03-04 14:52 ` [PATCH 4/7] drm/modes: Rewrite the command line parser 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 ` [PATCH 6/7] drm/modes: Allow to specify rotation and reflection on the commandline Maxime Ripard
2019-03-04 14:52 ` [PATCH 7/7] drm/modes: Parse overscan properties Maxime Ripard
2019-03-04 15:21 ` [PATCH 0/7] drm/vc4: Allow for more boot-time configuration Peter Stuge
2019-03-04 15:56 ` Maxime Ripard
2019-03-04 15:44 ` Stefan Wahren
2019-03-04 20:06 ` Eric Anholt
2019-03-05 9:14 ` Maxime Ripard
2019-03-11 13:00 ` Daniel Vetter
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