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Message-ID: <9efde4d8-385d-54da-fb0d-55625d3c4571@ideasonboard.com>
Date:   Wed, 13 Sep 2023 15:58:11 +0300
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Subject: Re: [RFC PATCH] drm: omapdrm: dsi: add refsel also for omap4
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To:     Tony Lindgren <tony@atomide.com>
Cc:     Andreas Kemnade <andreas@kemnade.info>, airlied@gmail.com,
        daniel@ffwll.ch, u.kleine-koenig@pengutronix.de, arnd@arndb.de,
        laurent.pinchart@ideasonboard.com, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
        Sebastian Reichel <sre@kernel.org>
References: <20230913065911.1551166-1-andreas@kemnade.info>
 <48972ab0-e4ed-11b2-31fb-ad93695a4db1@ideasonboard.com>
 <20230913124828.GL5285@atomide.com>
From:   Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
In-Reply-To: <20230913124828.GL5285@atomide.com>
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On 13/09/2023 15:48, Tony Lindgren wrote:
> * Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> [230913 12:11]:
>> I'm somewhat sure that the upstream driver used to work on omap4 sdp, which
>> has two DSI panels. But I can't even remember what omap4 version it had.
> 
> I think those were both dsi command mode panels though, not video mode?

Yes, true. If the PLL is totally wrong due to refsel, I'm sure a command 
mode panel would also fail. But it's true that video mode panels are 
more sensitive to the clock rate.

  Tomi