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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 577D8C4320A for ; Mon, 30 Aug 2021 09:49:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3AAE861076 for ; Mon, 30 Aug 2021 09:49:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236225AbhH3Jt6 convert rfc822-to-8bit (ORCPT ); Mon, 30 Aug 2021 05:49:58 -0400 Received: from aposti.net ([89.234.176.197]:42038 "EHLO aposti.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235733AbhH3Jt6 (ORCPT ); Mon, 30 Aug 2021 05:49:58 -0400 Date: Mon, 30 Aug 2021 10:48:52 +0100 From: Paul Cercueil Subject: Re: [PATCH] dmaengine: jz4780: Set max number of SGs per burst To: Artur Rojek Cc: Vinod Koul , linux-mips@vger.kernel.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Message-Id: In-Reply-To: <20210829195805.148964-1-contact@artur-rojek.eu> References: <20210829195805.148964-1-contact@artur-rojek.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Hi, Le dim., août 29 2021 at 21:58:05 +0200, Artur Rojek a écrit : > Total amount of SG list entries executed in a single burst is limited > by > the number of available DMA descriptors. > This information is useful for device drivers utilizing this DMA > engine. > > Signed-off-by: Artur Rojek Acked-by: Paul Cercueil Cheers, -Paul > --- > drivers/dma/dma-jz4780.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c > index ebee94dbd630..96701dedcac8 100644 > --- a/drivers/dma/dma-jz4780.c > +++ b/drivers/dma/dma-jz4780.c > @@ -915,6 +915,7 @@ static int jz4780_dma_probe(struct > platform_device *pdev) > dd->dst_addr_widths = JZ_DMA_BUSWIDTHS; > dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); > dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; > + dd->max_sg_burst = JZ_DMA_MAX_DESC; > > /* > * Enable DMA controller, mark all channels as not programmable. > -- > 2.33.0 >