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,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 537FDC3A5A7 for ; Wed, 4 Sep 2019 09:51:16 +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 2881B2339D for ; Wed, 4 Sep 2019 09:51:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="CSAFudQz"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Gq05tX4M" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2881B2339D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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-Transfer-Encoding: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-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+76XKz9ZJ7ZbUdPhZGLB751pKiGE9n+UHlxROm2ax/o=; b=CSAFudQzCYaacG NWQBE42mBtIUKgts+NqMXehYR5vZXN2ERP4dg1XBhxFrPwccV4oMNGQfm4Chi8XcS06J/HU3bQP5c DFwOIu6u4KVoPCvRWfWGv+A3FgHsTVF19SCzbkUEwL9sYGa9cdi3BKEO8J6HU0jr4lEUvAZ6S2vR9 URSgfQwVhx+efNDu6zyE+NJ/r3ernLrkTk9aQ9d9NxMqLuJLdwJb22trJ4Ax7eCPZDOCJnyXwpPmS zC+GCykBqy5XnZqvBWiVVqC4xnwAJeIUqEq5feu96b8rVuFVZ1hzrt50DzE8NdURkxy7b3bFFzueG J3fN0JvaoDHUCZ+S3B7Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i5RwT-0005fC-U1; Wed, 04 Sep 2019 09:51:10 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i5RwP-0005eL-Im for linux-arm-kernel@lists.infradead.org; Wed, 04 Sep 2019 09:51:07 +0000 Received: from localhost (unknown [122.182.201.156]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E3ACF22CF7; Wed, 4 Sep 2019 09:51:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567590664; bh=cWumTrUCWby2RFMQQ87i5+/dEWefDyNawluwiyL0n3s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Gq05tX4MsH75NEnfoomECduDUpW2wgJt/to/w0nCfJX3GyJx2fdZxyrIs6XDUmTRO bVrzmOsP03hofoZ+aKx8Ta7FWzNVpvjjjj//h1N2YrnyBho2cog9/jYfuefO4489kL TESY896jfACtG/BoceM+AOuwziakfG1yMbHS1yGI= Date: Wed, 4 Sep 2019 15:19:56 +0530 From: Vinod Koul To: Peter Ujfalusi Subject: Re: [PATCH 0/5] dmaengine: ti: edma: Multicore usage related fixes Message-ID: <20190904094956.GT2672@vkoul-mobl> References: <20190823125618.8133-1-peter.ujfalusi@ti.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190823125618.8133-1-peter.ujfalusi@ti.com> User-Agent: Mutt/1.12.0 (2019-05-25) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190904_025105_660710_B49D460B X-CRM114-Status: GOOD ( 10.95 ) 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: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, dmaengine@vger.kernel.org, dan.j.williams@intel.com, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 23-08-19, 15:56, Peter Ujfalusi wrote: > Hi, > > When other cores want to use EDMA for their use cases Linux was not playing > nicely. > By design EDMA is supporting shared use with shadow regions. Linux is using > region0, others can be used by other cores. > > In order to not break multicore shared usage of EDMA: > - do not reset paRAM slots which is not allocated for Linux (reserved paRAM > slots) > - Only reset region0 access registers, do not touch other regions > - Add option for reserved channels which should not be used by Linux in a similar > fashion as we already have for reserved paRAM slots. Applied 1 to 3, thanks -- ~Vinod _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel