From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Yuti Amonkar <yamonkar@cadence.com>
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
jernej.skrabec@siol.net, praneeth@ti.com,
narmstrong@baylibre.com, airlied@linux.ie, jonas@kwiboo.se,
jsarha@ti.com, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, a.hajda@samsung.com,
robh+dt@kernel.org, maxime@cerno.tech, sjakhade@cadence.com,
mparab@cadence.com
Subject: Re: [PATCH v6 3/3] drm: bridge: cdns-mhdp: add j721e wrapper
Date: Thu, 12 Mar 2020 09:01:23 +0200 [thread overview]
Message-ID: <0e9b73b7-a960-e2a1-d8a1-f12309755176@ti.com> (raw)
In-Reply-To: <20200311205217.GD4863@pendragon.ideasonboard.com>
Hi Laurent,
On 11/03/2020 22:52, Laurent Pinchart wrote:
>> +void cdns_mhdp_j721e_enable(struct cdns_mhdp_device *mhdp)
>> +{
>> + /*
>> + * Eneble VIF_0 and select DPI2 as its input. DSS0 DPI0 is connected
>> + * to eDP DPI2. This is the only supported SST configuration on
>> + * J721E.
>
> Without hardware documentation I can't really comment on this, but I'd
> like to make sure it doesn't imply that the MHDP has more than one input
> and one output.
You can download the TRM for j721e here:
http://www.ti.com/lit/pdf/spruil1
MHDP has one DP output, but 4 inputs to support MST and split/dual panel modes. None of those are
supported by the drivers, but perhaps some thought should be paid to figure out if adding these
features affect the DT bindings.
Tomi
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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prev parent reply other threads:[~2020-03-12 7:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-26 10:22 [PATCH v6 0/3] drm: Add support for Cadence MHDP DPI/DP bridge and J721E wrapper Yuti Amonkar
2020-02-26 10:22 ` [PATCH v6 1/3] dt-bindings: drm/bridge: Document Cadence MHDP bridge bindings Yuti Amonkar
2020-02-26 10:22 ` [PATCH v6 2/3] drm: bridge: Add support for Cadence MHDP DPI/DP bridge Yuti Amonkar
2020-03-11 22:20 ` Laurent Pinchart
2020-03-12 7:13 ` Tomi Valkeinen
2020-08-11 2:43 ` Laurent Pinchart
2020-05-01 7:32 ` Yuti Suresh Amonkar
2020-08-11 0:00 ` Laurent Pinchart
2020-08-26 15:38 ` Yuti Suresh Amonkar
2020-02-26 10:22 ` [PATCH v6 3/3] drm: bridge: cdns-mhdp: add j721e wrapper Yuti Amonkar
2020-03-11 20:52 ` Laurent Pinchart
2020-03-12 7:01 ` Tomi Valkeinen [this message]
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