From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Anholt <eric@anholt.net>
Subject: Re: VC4 DRM
Date: Mon, 17 Dec 2018 10:12:22 -0800
Message-ID: <87lg4om395.fsf@anholt.net>
References: <4da735da-047c-e076-3f40-fbe4bad29667@orpaltech.com>
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="===============1518203327=="
Return-path: <dri-devel-bounces@lists.freedesktop.org>
Received: from anholt.net (anholt.net [50.246.234.109])
 by gabe.freedesktop.org (Postfix) with ESMTP id 91DF56E645
 for <dri-devel@lists.freedesktop.org>; Mon, 17 Dec 2018 18:12:24 +0000 (UTC)
In-Reply-To: <4da735da-047c-e076-3f40-fbe4bad29667@orpaltech.com>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Sergey Suloev <ssuloev@orpaltech.com>, Noralf =?utf-8?Q?Tr=C3=B8nnes?= <noralf@tronnes.org>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
List-Id: dri-devel@lists.freedesktop.org

--===============1518203327==
Content-Type: multipart/signed; boundary="=-=-=";
	micalg=pgp-sha512; protocol="application/pgp-signature"

--=-=-=
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable

Sergey Suloev <ssuloev@orpaltech.com> writes:

> Eric, Noralf,
>
> could either of you answer a question about Vc4 DRM, please ?
>
> I am trying to connect MIPI DSI display to VC4 but it isn't showing=20
> anything. I have noticed
> that the DSI host=C2=A0 transfer() method vc4_dsi_host_transfer gets call=
ed=20
> for the commands that
> I am sending from my panel driver, but not for pixel data.
>
> My question: are pixel data normally transferred the same method within=20
> vc4_dsi driver
> or any "behind the scene" way ?

The transfer function isn't used for pixel data in video mode.  The vc4
panel has never been used for command mode panels, so if you have one of
those it will probably be extra work.

--=-=-=
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=uXSX
-----END PGP SIGNATURE-----
--=-=-=--

--===============1518203327==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVs
IG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlz
dHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg==

--===============1518203327==--