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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F04D2C433EF for ; Mon, 11 Oct 2021 14:12:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D9F8860241 for ; Mon, 11 Oct 2021 14:12:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240686AbhJKOOG convert rfc822-to-8bit (ORCPT ); Mon, 11 Oct 2021 10:14:06 -0400 Received: from aposti.net ([89.234.176.197]:41516 "EHLO aposti.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239076AbhJKOLi (ORCPT ); Mon, 11 Oct 2021 10:11:38 -0400 Date: Mon, 11 Oct 2021 16:09:29 +0200 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: 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 Vinod, Le lun., août 30 2021 at 10:48:52 +0100, Paul Cercueil a écrit : > 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 Feedback on this? 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 >> >