From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7826C4CEC8 for ; Fri, 13 Sep 2019 18:17:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9A02F206A5 for ; Fri, 13 Sep 2019 18:17:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hIV+Kc6k" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9A02F206A5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Content-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=qTiHyH/XujgcheUzPkQO5eeZ7DdGUB9+CYnD8bc5SGQ=; b=hIV+Kc6kGeYh4Xl8V6zAvVLZh fMfPtGQ9b1NY32iZdomeh/BC+cD228xfk0/dpIdLe61F2RKbTAyGoDHVBkyEIwkBbCrs89P2Ktvcm gppQZr0h5WIeA1PunkimHY5fhDlkjaOegYPuWDx+3q72qYXuNZ3s2VIfKjpoaFjBOG+2ViWSJVY9e XZxlIxI8tt0x3R3ncZ/8klqcYri6Spe72q5rySeF5fLIFmJt1onFK9H+ejXhWjnPP9ulXjUxfW187 1Nh4YzniJakcekzaXvVbC+N4DSTnBv3oKjjVSiAMFg26zW9u6AG+CGWiSCkV+wAqsDJQMAH0oeiP3 xTXIIqIPQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1i8q8e-0003HR-S8; Fri, 13 Sep 2019 18:17:44 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1i8q8b-0003GY-8K; Fri, 13 Sep 2019 18:17:43 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: alyssa) with ESMTPSA id ED22D289F25 Date: Fri, 13 Sep 2019 14:17:29 -0400 From: Alyssa Rosenzweig To: Nicolas Boichat Subject: Re: [PATCH] arm64: dts: mt8183: Add node for the Mali GPU Message-ID: <20190913181729.GB3115@kevin> References: <20190905081546.42716-1-drinkcat@chromium.org> MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190913_111741_431379_789032CB X-CRM114-Status: GOOD ( 13.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, "linux-kernel@vger.kernel.org" , Rob Herring , "moderated list:ARM/Mediatek SoC support" , Boris Brezillon , Matthias Brugger , Nick Fan , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" Content-Type: multipart/mixed; boundary="===============7332928766724357094==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============7332928766724357094== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="2B/JsCI69OhZNC5r" Content-Disposition: inline --2B/JsCI69OhZNC5r Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > > > The binding we use with out-of-tree Mali drivers includes more > > > clocks, I assume this would be required eventually if we have an > > > in-tree driver: > > > > We have an in-tree driver... >=20 > Right but AFAICT it does not support Bifrost GPU (yet?). By the time MT8183 shows up in more concrete devices, it will, certainly in kernel-space and likely in userspace as well. At present, the DDK can be modified to run on top of the in-tree Mali drivers, i.e. "Bifrost on mainline linux-next (+ page table/compatible patches), with blob userspace". While the open userspace isn't ready here quite yet, I would definitely encourage upstream kernel for ChromeOS, since then there's no need to maintain the out-of-tree GPU driver. --- More immediately, per Rob's review, it's important that the bindings accepted upstream work with the in-tree Bifrost driver. Conceptually, once Mesa supports Bifrost, if I install Debian on a MT8183 board, everything should just work. I shouldn't need MT-specific changes / need to change names for the DT. Regardless of which kernel driver you end up using, minimally sharing the DT is good for everyone :-) -Alyssa --2B/JsCI69OhZNC5r Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEQ17gm7CvANAdqvY4/v5QWgr1WA0FAl173TQACgkQ/v5QWgr1 WA2KFBAAnQIHm2aIeWt2mYq9onM7XNfSCCxZzYCsLXaE1LiylCZdcDanV4VaF+B3 f+jIbfoeoHcnqlhNYRNiI93L0dl3YdmKHBJsPkxNg+ziQu/alZQbsYFNB07LBsuk 2dxKissYufkSfdcc4UFEBDYq6LQlLF0XmXr5G7oNazC29e73h6Jpn8lrIlKrKo+v 5SE/KJs7ua1sfKkj6As8LOh2VFqCv+NZ7XPjI+qUQDoSfXgoO2DTsLu79lhInxRr pdC8YKeypMlEGRuDgXt9Ee1zi0lk0OroJ+9uELf1G67V/JlpSOOI1go00HhC4Tll I8LeczfwD2ujVnJ1kpENyQAmqEY/b6lNPIQJm0MvLFh59Hk9hjl8j1WlH9+yKMNH rcZK1/SYeo97URXmKbfYFiwnRLXsX3p7wXjC6vtiw0xa7AcgdsfU+su4uUp8uq3V 6xCVdnowzNVjYBt8OZbOV5QWXTp0peb9VRIdCjHnrtgb55eYoQDV7Mh69Q5oG8MB GZoD72p8ks3LI9BrTJ2QFjEsbWYj9XpvXI7AGL7YcR99QyF9hmgQF0h8Xnwz4nwD 8oYGMbECAYUT7gVNHCU9lbFkmvsgMCSTvLfMNO5nwarwgF5y8LsQITo9Bf2tLyQ/ nu3S6fy0qmIcLnwbiMG7urG8a81EtGUNJb8JBd4SLmKQAkA4NWo= =H0a9 -----END PGP SIGNATURE----- --2B/JsCI69OhZNC5r-- --===============7332928766724357094== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============7332928766724357094==--