From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5E1F021ADC6; Fri, 16 May 2025 07:59:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747382375; cv=none; b=tbaMxoZM/y+W/m8piU7/Q2mpE8HKJc8Wkbn1FzmAIVn9DuQWLsphKO+X1NZ5xt8vD7woAp6lE8n2o2Wp8y0gEDHt4ojRKy8zIPHdk5YocXNzABkk2ZkjTD9ls+bBMKKlc7PYSuTylmzaW7OuEMsMeJPiY8NcMdoAh9yyfOTkhDk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747382375; c=relaxed/simple; bh=51UiwAtTBw1xtOTx6e1Pp64GJoZ4L5WSxUxJDmEN9Kg=; h=Content-Type:Date:Message-Id:Cc:From:To:Subject:References: In-Reply-To; b=djQSGw9JHskFnwiurmcLP/EFaoV2zcexlVTcZS61Fea+YxUn03VtKSj6eHJ/vecFgfmkGYJLXvPSG+4ALZt/BIrUnZQt+dVny4fnTfdRvdscPr21chPOKtilR4vrsUvvnigIrVJVlyddwj+hRh6I/Ms7K117jlacPXEt49o99XM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=U3xEd25L; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="U3xEd25L" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 50609C4CEE4; Fri, 16 May 2025 07:59:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747382374; bh=51UiwAtTBw1xtOTx6e1Pp64GJoZ4L5WSxUxJDmEN9Kg=; h=Date:Cc:From:To:Subject:References:In-Reply-To:From; b=U3xEd25LCeI5ukSRK+khUpX/7FrIdv7pmsPIoVDcXd977W94/6EfEvi7labDdNvg7 89SxW/GpepKxBL5ot2BIQ51iRgEMwULni7ZiUz3AFh3MVjC7zEUbWXuJzzjUVvxoIK CfsX2IzFCTgcmg74kg8SnZ64ckcp9pFGw6cKBf4SczEUSqn/Y1khXtZ2mOe1LDiXhE blgmYVgSOJehRAknA1OoYmdfQGvU4whBtwlBWF3TsUN8wumFBZkCt7f6AsDwatq/CY Fde1crnHIujZ1oW/M9gwSEx3LwfmIiqHQwp1XNkS5zgLUM//OSXAghtYvJbbeopjRV cniiO3aZVFuLg== Content-Type: multipart/signed; boundary=d7312f90523e3e5483928f25794944ee2c9f0b4081e939bb716620953902; micalg=pgp-sha384; protocol="application/pgp-signature" Date: Fri, 16 May 2025 09:59:30 +0200 Message-Id: Cc: "Maarten Lankhorst" , "Thomas Zimmermann" , "Maxime Ripard" , "David Airlie" , "Laurent Pinchart" , "Simona Vetter" , "Nishanth Menon" , "Vignesh Raghavendra" , "Devarsh Thakkar" , "Praneeth Bajjuri" , "Udit Kumar" , "Jayesh Choudhary" , "Francesco Dolcini" , "Alexander Sverdlin" , "DRI Development List" , "Devicetree List" , "Linux Kernel List" From: "Michael Walle" To: "Aradhya Bhatia" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Tomi Valkeinen" , "Jyri Sarha" Subject: Re: [PATCH v7 4/4] drm/tidss: Add OLDI bridge support X-Mailer: aerc 0.16.0 References: <20250329133943.110698-1-aradhya.bhatia@linux.dev> <20250329133943.110698-5-aradhya.bhatia@linux.dev> In-Reply-To: <20250329133943.110698-5-aradhya.bhatia@linux.dev> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: --d7312f90523e3e5483928f25794944ee2c9f0b4081e939bb716620953902 Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 On Sat Mar 29, 2025 at 2:39 PM CET, Aradhya Bhatia wrote: > From: Aradhya Bhatia > > The AM62x and AM62Px SoCs feature 2 OLDI TXes each, which makes it > possible to connect them in dual-link or cloned single-link OLDI display > modes. The current OLDI support in tidss_dispc.c can only support for > a single OLDI TX, connected to a VP and doesn't really support > configuration of OLDIs in the other modes. The current OLDI support in > tidss_dispc.c also works on the principle that the OLDI output can only > be served by one, and only one, DSS video-port. This isn't the case in > the AM62Px SoC, where there are 2 DSS controllers present that share the > OLDI TXes. > > Having their own devicetree and their own bridge entity will help > support the various display modes and sharing possiblilities of the OLDI > hardware. > > For all these reasons, add support for the OLDI TXes as DRM bridges. > > Reviewed-by: Tomi Valkeinen > Tested-by: Alexander Sverdlin > Signed-off-by: Aradhya Bhatia > Signed-off-by: Aradhya Bhatia Tested-by: Michael Walle # on a j722s/am67a FWIW, I have a few downstream patches to get the DSS on j722s running. -michael --d7312f90523e3e5483928f25794944ee2c9f0b4081e939bb716620953902 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iKgEABMJADAWIQTIVZIcOo5wfU/AngkSJzzuPgIf+AUCaCbwYhIcbXdhbGxlQGtl cm5lbC5vcmcACgkQEic87j4CH/hj6gF/Wusj103bkQJ0s/qoyxRDcMUItzGDi4DS o3U2g+BCnLNbwlPXUphnJlSKimOAS8ynAX9WTLPfNmCmAVDU8f08fakCPkJUot0x tdNCXLNt5WYI5Hj5jUV6ysIYmadhcu0rjv8= =GNXG -----END PGP SIGNATURE----- --d7312f90523e3e5483928f25794944ee2c9f0b4081e939bb716620953902--