From mboxrd@z Thu Jan 1 00:00:00 1970 From: Faiz Abbas Subject: Re: [PATCH v2 3/8] dt-bindings: sdhci-omap: Add properties for using external dma Date: Tue, 19 Feb 2019 19:02:40 +0530 Message-ID: <60f2cc85-90dc-a15e-78bb-385213ca53c4@ti.com> References: <20190215192033.24203-1-faiz_abbas@ti.com> <20190215192033.24203-4-faiz_abbas@ti.com> <20190215200718.GB15711@atomide.com> <2aa0f7e4-c880-ee88-2e88-dc2c3187f0c9@ti.com> <20190218201240.GA14067@bogus> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20190218201240.GA14067@bogus> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring Cc: Tony Lindgren , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, ulf.hansson@linaro.org, mark.rutland@arm.com, adrian.hunter@intel.com, kishon@ti.com, zhang.chunyan@linaro.org List-Id: devicetree@vger.kernel.org Hi Rob, On 19/02/19 1:42 AM, Rob Herring wrote: > On Mon, Feb 18, 2019 at 07:11:32PM +0530, Faiz Abbas wrote: >> Hi Tony, >> >> On 16/02/19 1:37 AM, Tony Lindgren wrote: >>> * Faiz Abbas [190215 19:18]: >>>> From: Chunyan Zhang >>>> >>>> sdhci-omap can support both external dma controller via dmaengine >>>> framework as well as ADMA which standard SD host controller >>>> provides. >>> >>> Care to describe here also how to configure things for ADMA and >>> instead of DMA? Just leave out dmas property? >>> >> >> That's correct. If dmas property is populated, then use external DMA. >> Otherwise use ADMA/SDMA depending on what you read from the CAPS register. > > Then the properties should be optional. > Will move it to optional in v3. Thanks, Faiz