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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_HIGH,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 79911C43144 for ; Thu, 28 Jun 2018 06:00:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 29C4126F95 for ; Thu, 28 Jun 2018 06:00:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="iOa+Nbua" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 29C4126F95 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-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753422AbeF1GAp (ORCPT ); Thu, 28 Jun 2018 02:00:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:40184 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752108AbeF1GAn (ORCPT ); Thu, 28 Jun 2018 02:00:43 -0400 Received: from localhost (unknown [106.201.104.231]) (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 D354726F92; Thu, 28 Jun 2018 06:00:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1530165642; bh=D+qj1EbeBpBPVIKgKh+i3GcDwtNeMstXoRWCjoZ17t0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=iOa+Nbua2d8TAYl18o9dDhQXVi20AdwxWAhQT4WmM8Q4Oq9wEZ5985wh3T+fAKUGy aYutG+aR6uS4j3kmGIbBbnUMHDZbyJRxpVfNidymlvGGeGQxKm73cRVwS+NVLwJRUC E+h4mIbVYcLSjYDfHFbm7TWArRHpsabgESGTcF64= Date: Thu, 28 Jun 2018 11:30:34 +0530 From: Vinod To: Guodong Xu Cc: robh+dt@kernel.org, mark.rutland@arm.com, dan.j.williams@intel.com, liyu65@hisilicon.com, suzhuangluan@hisilicon.com, xuhongtao8@hisilicon.com, zhongkaihua@huawei.com, xuezhiliang@hisilicon.com, xupeng7@huawei.com, sunliang10@huawei.com, fengbaopeng@hisilicon.com, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/3] dt-bindings: k3dma: add optional property dma_min_chan Message-ID: <20180628060034.GN22377@vkoul-mobl> References: <20180622032416.20133-1-guodong.xu@linaro.org> <20180622032416.20133-2-guodong.xu@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180622032416.20133-2-guodong.xu@linaro.org> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22-06-18, 11:24, Guodong Xu wrote: > From: Li Yu > > Add optional property dma_min_chan for k3dma. > > Signed-off-by: Li Yu > --- > Documentation/devicetree/bindings/dma/k3dma.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/dma/k3dma.txt b/Documentation/devicetree/bindings/dma/k3dma.txt > index 4945aeac4dc4..2fa1370c3173 100644 > --- a/Documentation/devicetree/bindings/dma/k3dma.txt > +++ b/Documentation/devicetree/bindings/dma/k3dma.txt > @@ -12,6 +12,11 @@ Required properties: > have specific request line > - clocks: clock required > > +Optional properties: > +- dma_min_chan: the minimum number of DMA channel which begin to use > + the default value is 0, but in some platform is Sorry I don't understand this property, we already have dma-channels which describes the channels in a controller. What is purpose of this ? > + configured 1, like hi3660 platform > + > Example: > > Controller: > @@ -21,6 +26,7 @@ Controller: > #dma-cells = <1>; > dma-channels = <16>; > dma-requests = <27>; > + dma_min_chan = <1>; > interrupts = <0 12 4>; > clocks = <&pclk>; > }; > -- > 2.17.1 -- ~Vinod