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From: Nikhil Devshatwar <nikhil.nd@ti.com>
To: <dri-devel@lists.freedesktop.org>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Subject: drm: Supporting new connector model in tidss
Date: Tue, 6 Oct 2020 03:01:23 +0530	[thread overview]
Message-ID: <20201005213123.o4qtfazrnexgjq7p@NiksLab> (raw)

Hi all,

I am trying to convert the upstream tidss drm driver to new
connector model.
The connector is getting created by the tidss driver and bridges are
attached with flag DRM_BRIDGE_ATTACH_NO_CONNECTOR
Here are some questions, regarding this:

1) Most of the info regarding bus_format and bus flags is coming from
the bridges. Is it okay to not populate connector->display_info with
bus_format and flags?

2) The "drm_atomic_bridge_chain_select_bus_fmts" does the format
negotiation. So is it okay for the encoder to simply pick the bus_format
from the first bridge's state?

3) What is the meaning of MEDIA_BUS_FMT_FIXED? Does it mean that the
bridge does not change the format from input to output?

4) The bus_flags are available in bridge->timings->input_bus_flags and
also in bridge_state->input_bus_cfg.flags. Which one should be used?

Regards,
Nikhil D
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             reply	other threads:[~2020-10-05 21:43 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-05 21:31 Nikhil Devshatwar [this message]
2020-10-05 22:09 ` drm: Supporting new connector model in tidss Daniel Vetter
2020-10-06  7:07 ` Tomi Valkeinen
2020-10-06  7:38   ` Boris Brezillon

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