From: "H. Nikolaus Schaller" <hns@goldelico.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Tony Lindgren <tony@atomide.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
Linux-OMAP <linux-omap@vger.kernel.org>,
Jyri Sarha <jsarha@ti.com>,
kernel@pyra-handheld.com,
Discussions about the Letux Kernel
<letux-kernel@openphoenux.org>
Subject: Re: module_mipi_dsi_driver panel with omapdrm?
Date: Fri, 24 Jul 2020 07:50:14 +0200 [thread overview]
Message-ID: <53AC411A-53A9-4ED2-8DCD-A88F6CF739EB@goldelico.com> (raw)
In-Reply-To: <20200724012411.GJ21353@pendragon.ideasonboard.com>
Hi Laurent,
> Am 24.07.2020 um 03:24 schrieb Laurent Pinchart <laurent.pinchart@ideasonboard.com>:
>
> Hi Nikolaus,
>
> On Thu, Jul 23, 2020 at 09:03:49AM +0200, H. Nikolaus Schaller wrote:
>>> Am 08.07.2020 um 09:52 schrieb H. Nikolaus Schaller <hns@goldelico.com>:
>>>> Am 07.07.2020 um 21:04 schrieb H. Nikolaus Schaller <hns@goldelico.com>:
>>>>
>>>> And what I would need to know before I start to write new code is
>>>> if is possible to operate a video mipi dsi panel with driver from
>>>> gpu/drm/panel together with omapdrm (v5.7 and later).
>>>
>>> I did a quick test on a 5.7.6 kernel with the sysc fixes as
>>> suggested by Tony.
>>>
>>> Then I overwrote the compatible entry of our display to be
>>> orisetech,otm8009a and configured to build the otm8009a panel driver.
>>>
>>> The panel driver is loaded, but not probed (no call to otm8009a_probe).
>>> It is shown in /sys/bus/mipi-dsi/drivers (and lsmod) but not /sys/bus/mipi-dsi/devices.
>>>
>>> So what should I try next?
>>
>> Any suggestions if and how it is possible to use a gpu/drm/panel MIPI DSI
>> video mode panel with omapdrm (on OMAP5)?
>
> For the DSI panel to probe, the display driver needs to register a DSI
> host with mipi_dsi_host_register().
I see.
> omapdrm doesn't do so yet, we need
> to integrate Sebastian's "[PATCHv2 00/56] drm/omap: Convert DSI code to
> use drm_mipi_dsi and drm_panel" series first. I'll try to review it in
> the near future.
>
>> The problem is that our old omapdrm/display driver is broken since v5.7 and
>> an experimental gpu/drm/panel driver does not probe. And I assume that
>> omapdrm/display will disappear completely soon.
>
> Not before Sebastian's series gets integrated.
Yes, it is be very important for us since I do not want to find out why the
old omapdrm/display driver isn't working any more just to have it rewritten
again and moved to gpu/drm/panel within a very short time frame.
I would be happy to start the new panel driver and test it with Sebastian's
series. AFAIR Sebastian's series doesn't currently apply well to v5.8-rc so
it would be nice if there were a work-in-progress repo that is rebased every
now and then.
BR and thanks,
Nikolaus
next prev parent reply other threads:[~2020-07-24 5:50 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-05 6:52 OMAP5: inconsistency between target-module and dsi_of_data_omap5 H. Nikolaus Schaller
2020-07-05 7:40 ` H. Nikolaus Schaller
2020-07-05 13:47 ` H. Nikolaus Schaller
2020-07-05 14:26 ` Tony Lindgren
2020-07-05 14:36 ` Tony Lindgren
2020-07-05 15:40 ` H. Nikolaus Schaller
2020-07-06 14:36 ` Tony Lindgren
2020-07-06 16:10 ` H. Nikolaus Schaller
2020-07-07 18:01 ` Tony Lindgren
2020-07-07 19:04 ` H. Nikolaus Schaller
2020-07-08 7:52 ` OMAP5: inconsistency between target-module and dsi_of_data_omap5 / module_mipi_dsi_driver panel with omapdrm H. Nikolaus Schaller
2020-07-23 7:03 ` Re:module_mipi_dsi_driver panel with omapdrm? H. Nikolaus Schaller
2020-07-24 1:24 ` module_mipi_dsi_driver " Laurent Pinchart
2020-07-24 5:50 ` H. Nikolaus Schaller [this message]
2020-08-01 13:43 ` H. Nikolaus Schaller
2020-08-01 23:22 ` Sebastian Reichel
2020-08-05 9:19 ` H. Nikolaus Schaller
2020-08-05 11:28 ` Sebastian Reichel
2020-08-05 11:49 ` H. Nikolaus Schaller
2020-08-05 12:08 ` Tomi Valkeinen
2020-08-06 15:50 ` David Shah
2020-08-06 16:04 ` [Letux-kernel] " David Shah
2020-08-06 18:44 ` David Shah
2020-08-06 19:01 ` H. Nikolaus Schaller
2020-08-06 19:44 ` David Shah
2020-08-07 6:53 ` Tomi Valkeinen
2020-08-16 11:24 ` H. Nikolaus Schaller
2020-08-18 9:16 ` Tony Lindgren
2020-08-04 12:43 ` Tomi Valkeinen
2020-08-05 9:25 ` H. Nikolaus Schaller
2020-08-05 11:07 ` Sebastian Reichel
2020-08-05 11:14 ` H. Nikolaus Schaller
[not found] <E1k3Hyu-0000Ac-BU@ds0.me>
2020-08-05 12:00 ` H. Nikolaus Schaller
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