From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) (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 3920F1552FA; Wed, 28 Aug 2024 06:12:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=93.104.207.81 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724825551; cv=none; b=sJ8ZAekRJY3JUD9SyVMI8gq59NhXUEHN34x3YnOwZBD71M60ZDHejDoZxSRnRCmNi0YYITdocjOGLaJfrA5vAHb2HsLniB+f+CiYgpdT5GWvYeDfMb9D1C1/hlERDZImYEV8th/Px8sCYYKInWjl6OiaFcY2jYjJWTlQSos2rFA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724825551; c=relaxed/simple; bh=hwNHsYHF2oUKtn8n5RD6uuWHQW7AuyNPuOS52/nANlc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=QUPKyfdfzUFKfpPl7G8H2N5FxWu8ly6iiYIFrA7Hllk/Cq4YVM9UmEzLJWl99wEOozzgBUaAY10W/xiE8qDxF/kO3smNCJ9EwExJS9fuxdgag+hUCp3jvC2bNdp8Vta7ujTz1YZ9CSMEcDmpS67J5zwzXwftobPHQMKsmqfc32g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ew.tq-group.com; spf=pass smtp.mailfrom=ew.tq-group.com; dkim=pass (2048-bit key) header.d=tq-group.com header.i=@tq-group.com header.b=Qy5yZG5C; dkim=fail (0-bit key) header.d=ew.tq-group.com header.i=@ew.tq-group.com header.b=Dvq12mdy reason="key not found in DNS"; arc=none smtp.client-ip=93.104.207.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ew.tq-group.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ew.tq-group.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tq-group.com header.i=@tq-group.com header.b="Qy5yZG5C"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=ew.tq-group.com header.i=@ew.tq-group.com header.b="Dvq12mdy" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1724825548; x=1756361548; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=XO0UH3rt2tTGMcGZHCllnQej5STp9ORf7PtLe6wtdEc=; b=Qy5yZG5CPFNNN5Z7KT+oCW5TKJpnhPh3NayT8hvCq4/GFgwrvB5/F7Ma fbwRcrG3RxVn8fKTPcnx9QrWAutFTMfDOiRNX58qnxNMmliVYXfHr/Yez nUgrPjXOcH+jIoCM6rL5+P7RxOoxWZ3MerlrvrMvY2Ed902O0AC9aX+mk lCTvo/Pfu944ZAL1F20YkQ8rsZp+XJK5PTt72eY04O8IlRrR+0LvGx+iN SbD/z9cq2wALdlb5fBIg+Mb1HOO1uhQrK6tpbz34nFOiTxGbBPQtPTpdM C/8DPRVvbMI8VvEmf44XPAJXTVdVP2xFxqgaM/GwlFtTfB3HOynkEPTIU Q==; X-CSE-ConnectionGUID: T+/E5GVUQoadvyANOBmAZg== X-CSE-MsgGUID: NBxho1Q9TeKtPyB6yq6vkQ== X-IronPort-AV: E=Sophos;i="6.10,181,1719871200"; d="scan'208";a="38624295" Received: from vmailcow01.tq-net.de ([10.150.86.48]) by mx1.tq-group.com with ESMTP; 28 Aug 2024 08:12:26 +0200 X-CheckPoint: {66CEBFCA-1-5FF8EC80-F6CEE9F8} X-MAIL-CPID: 64DA97D51747141F3F980519A02CD7BF_0 X-Control-Analysis: str=0001.0A782F29.66CEBFCA.0033,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 AA391169D7C; Wed, 28 Aug 2024 08:12:20 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ew.tq-group.com; s=dkim; t=1724825541; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=XO0UH3rt2tTGMcGZHCllnQej5STp9ORf7PtLe6wtdEc=; b=Dvq12mdymS4S9Uoit4n+DOfLICU2ulohnbYQ6j9esmlsrbA6HzavU5KOcK6jyOKd8b9llC SmxdoGYNBRtUh6cSoClGlhzF+xX+IA6IesKo8WKOG7Syz+isPRkc61FXm0ACRZCyTGOhfZ 6ck14xLohj1CU/VBQmGmu+PnJs0RvgkqlbPkVzooT7bTKw6iXPPz18DMg2/paQiN2ou13K NIqmAzGBRR5+6I7p7DPauDyKdw+ORdCjEQWgKZ8pJHePjpKiVaD2ieq4/5CkKMfhR0skWY y3+6drFRRn0/ISpgJ99mURng3v93g9pDac1Ld0mxQ5vP3r9zLDBBofmn1BoJPg== From: Alexander Stein To: Fabio Estevam Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , 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: Wed, 28 Aug 2024 08:12:20 +0200 Message-ID: <3313261.aeNJFYEL58@steina-w> Organization: TQ-Systems GmbH In-Reply-To: References: <20240827142458.265558-1-alexander.stein@ew.tq-group.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Last-TLS-Session-Version: TLSv1.3 Am Dienstag, 27. August 2024, 16:32:10 CEST schrieb Fabio Estevam: > Hi Alexander, >=20 > On Tue, Aug 27, 2024 at 11:25=E2=80=AFAM Alexander Stein > wrote: > > > > Default CMA size is too small for HDMI output and VPU usage. Increase t= he > > default size by providing a CMA memory area. > .... > > + linux,cma { > > + compatible =3D "shared-dma-pool"; > > + reusable; > > + size =3D <0x14000000>; >=20 > Just curious: how did you calculate that this is a suitable CMA memory > area size? Just after startup and a simple weston running on a 1080 HDMI output I habe this CMA status: > # grep Cma /proc/meminfo > CmaTotal: 327680 kB > CmaFree: 137764 kB AFAIK also DMA setup is using CMA memory. When playing (and decoding) bbb_sunflower_1080p_30fps_normal.mp4 free CMA m= emory shrinks down to ~60MiB > # grep Cma /proc/meminfo > CmaTotal: 327680 kB > CmaFree: 63144 kB So, 260MiB should be enough (but just barely). But to give some spare memory it has been increased to 320MiB. 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