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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id DC3E8ECE57A for ; Mon, 9 Sep 2024 14:16:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+j8lFlBsaShntDOrjXrB7TyHBj/n+3DZD/tr32Okp7U=; b=zr0cZdNiqSIfF38S4F0VSy5L+d FhJuOFdRVZ8Lh6SBmTcxz/aITsArd5oXVN5/1W7TlcIJK9acVqlCwPRzWhbg6Ve7XfE9nbZjc71oK eQ3RohLtLGbGUZWEuJjpb9AKRwwzG7qd9r5wLxOsHeTtMDpp8y02DOnIxGT1bLFct0s64+e2tp/Zl iDs1PQdfvkEk8V7BFtc5MZZMl+/gjKfeqMfY4dFQ/xdKssIWFUYVAmjpC0qf9Ppld8LeV9mDUnsfw BJ3J3vS5JHHuwGPZU7sbxwysVVhJmsMtihA6Vr5LlA3QLfOuzZdJ1G9N4I2OxdJJrDC3RDfsBPIZT s8q0Izjg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1snfBb-00000002Emz-3bSm; Mon, 09 Sep 2024 14:16:11 +0000 Received: from mx1.tq-group.com ([93.104.207.81]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1snf6z-00000002Dem-1sdD for linux-arm-kernel@lists.infradead.org; Mon, 09 Sep 2024 14:11:27 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1725891085; x=1757427085; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+j8lFlBsaShntDOrjXrB7TyHBj/n+3DZD/tr32Okp7U=; b=lHDoWobefGl6IUUmcLAHDhMRCDJw/Z3sVih/0iE4ATwGTpSPYvg551DC /pMBx89HVnMYZAO7RqZZP4LA7Dp45dMfh2S0i7yB2TbiA2K7O/CAQcwhY 2pmuYRzhulCasTcH25JInbSqtZncCeNFrsSuk4wHMOjE9k0cC39kjbgQ0 RroirbvHNUyYJw25kVpSih4eyKRkrzjtn5F39PX+lk/KKOdy9sNPlAlKQ cZBx8ohIklO0Fu5kZ8H3vZ+LpnL2sq50KHQZUQA55CbeeD5TutCnExp/W cUVkHVSF062lxdHHOZjC0NI/6EyCP/j6b9tYSMuAyG4D2yjvX/Dbh4ZfR Q==; X-CSE-ConnectionGUID: BtBnGZZPSTuxoFlUYT7eyw== X-CSE-MsgGUID: 0U/4v52iRB6ESHNAmYGWBw== X-IronPort-AV: E=Sophos;i="6.10,214,1719871200"; d="scan'208";a="38842554" Received: from vmailcow01.tq-net.de ([10.150.86.48]) by mx1.tq-group.com with ESMTP; 09 Sep 2024 16:11:20 +0200 X-CheckPoint: {66DF0208-1B-C661815F-E221238E} X-MAIL-CPID: 4EDA6A5EC0D98CBAA8C4679C54659C20_1 X-Control-Analysis: str=0001.0A782F19.66DF0208.0146,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id DAF8316B1F7; Mon, 9 Sep 2024 16:11:14 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ew.tq-group.com; s=dkim; t=1725891076; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=+j8lFlBsaShntDOrjXrB7TyHBj/n+3DZD/tr32Okp7U=; b=gU3UY3c8fc3pjvMMkD+CA5fwJ8eblBb2Dk8INfDUgI4H5o7mCgP5kx0LsW/Iut0D59/R0e +fc2kFwgWudLNqMWTzC+43T8ANYWbl2CkW3DWmUjFLpfcJ2rpYRZFl1Jjsy+vdeoxxaqmk egSO6fC88/l1bkRpw8ObfleTppkWUg45w9/s7GJD21zeRQ+3Sk6IM9U6sWeSCkekliJQDm /c3dK+r+aQs68pZm+ToYfhwMWT6lSIVxOl9cQ8fOvi8UYCAJOYPAIYIHkey0rnTCajnLcv nC1Zr3t+7FOqpGwrFM+fZPrjMvm3/y/jNzSW7aFgcS3TkX+ThcEffQMo0cvLKw== From: Alexander Stein To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: linux@ew.tq-group.com, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/1] ARM: dts: imx6qdl: Add reserved memory area for CMA memory Date: Mon, 09 Sep 2024 16:11:14 +0200 Message-ID: <2751338.mvXUDI8C0e@steina-w> Organization: TQ-Systems GmbH In-Reply-To: <10526262.nUPlyArG6x@steina-w> References: <20240827142458.265558-1-alexander.stein@ew.tq-group.com> <10526262.nUPlyArG6x@steina-w> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240909_071125_972796_280A25FF X-CRM114-Status: GOOD ( 16.58 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Am Mittwoch, 28. August 2024, 09:49:36 CEST schrieb Alexander Stein: > Am Dienstag, 27. August 2024, 16:24:58 CEST schrieb Alexander Stein: > > Default CMA size is too small for HDMI output and VPU usage. Increase t= he > > default size by providing a CMA memory area. > >=20 > > Signed-off-by: Alexander Stein > > --- > > Smallest RAM variant has 512MiB. > >=20 > > arch/arm/boot/dts/nxp/imx/imx6qdl-mba6.dtsi | 14 ++++++++++++++ > > 1 file changed, 14 insertions(+) > >=20 > > diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-mba6.dtsi b/arch/arm/boo= t/dts/nxp/imx/imx6qdl-mba6.dtsi > > index d03f7065ddfd7..8ba3ec27bee07 100644 > > --- a/arch/arm/boot/dts/nxp/imx/imx6qdl-mba6.dtsi > > +++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-mba6.dtsi > > @@ -106,6 +106,20 @@ reg_vcc3v3_audio: regulator-vcc3v3-audio { > > vin-supply =3D <®_mba6_3p3v>; > > }; > > =20 > > + reserved-memory { > > + #address-cells =3D <1>; > > + #size-cells =3D <1>; > > + ranges; > > + > > + linux,cma { > > + compatible =3D "shared-dma-pool"; > > + reusable; > > + size =3D <0x14000000>; > > + alloc-ranges =3D <0x10000000 0x20000000>; > > + linux,cma-default; > > + }; > > + }; > > + >=20 > Please do not merge yet. > I just noticed that this breaks mmap'ed fbdev usage. It only works when C= MA > area is in HighMem. Okay, now that commit 5a498d4d06d6d ("drm/fbdev-dma: Only install deferred I/O if necessary") has been applied, the mentioned problem is gone. This patch can be applied if there are no concerns. Best regards, Alexander =2D-=20 TQ-Systems GmbH | M=FChlstra=DFe 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht M=FCnchen, HRB 105018 Gesch=E4ftsf=FChrer: Detlef Schneider, R=FCdiger Stahl, Stefan Schneider http://www.tq-group.com/