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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 32C62C43381 for ; Mon, 18 Feb 2019 16:28:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 056AF2084D for ; Mon, 18 Feb 2019 16:28:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389144AbfBRQ2S (ORCPT ); Mon, 18 Feb 2019 11:28:18 -0500 Received: from muru.com ([72.249.23.125]:39324 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731218AbfBRQ2S (ORCPT ); Mon, 18 Feb 2019 11:28:18 -0500 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 7092480E4; Mon, 18 Feb 2019 16:28:27 +0000 (UTC) Date: Mon, 18 Feb 2019 08:28:14 -0800 From: Tony Lindgren To: Faiz Abbas Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org, ulf.hansson@linaro.org, robh+dt@kernel.org, mark.rutland@arm.com, adrian.hunter@intel.com, kishon@ti.com, zhang.chunyan@linaro.org Subject: Re: [PATCH v2 3/8] dt-bindings: sdhci-omap: Add properties for using external dma Message-ID: <20190218162814.GI15711@atomide.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> <20190218162033.GF15711@atomide.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190218162033.GF15711@atomide.com> User-Agent: Mutt/1.11.2 (2019-01-07) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Tony Lindgren [190218 16:20]: > * Faiz Abbas [190218 13:38]: > > 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. > > OK thanks. So I guess the dma properties should be under optional properties in the binding doc then. Regards, Tony