Received: by 2002:a05:6520:1682:b0:147:d1a0:b502 with SMTP id ck2csp5595049lkb; Mon, 11 Oct 2021 09:37:17 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwtEE/WifUwZUCxDYSkTcflgEOk9YVgTpdyWpEKeiV9DKv2JIJLsE4XQIAG5lnDPLq/9sMj X-Received: by 2002:a63:6c02:: with SMTP id h2mr4495638pgc.173.1633970237430; Mon, 11 Oct 2021 09:37:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1633970237; cv=none; d=google.com; s=arc-20160816; b=rKt4O+utfA0xZapeC2LHg89LX7kkIglfFzVPbG8N3rcn+l6QGuSOOsEQgIZ6l5OFc4 vGws3RNs0bmXjgG8HpUh0Yef0dhHyvAUvRypq7MXA0xQW0mS2wVXh6TAKkRMlfxihiXj 6zZOStxGT2bnDfLUsHSXt9m2Dsd5+be2/uDNEn3PT4gxpP0OsN26LYHrqeiKI48Nc80C 1YjjSCZaFNAlXTD80GASu2ZaxSbUro0wI89l6zPSXwrWaMZ1IBUxOjlvjOPJPEj/9Pgw f2QbdmzI8irurhrVNUIhOv9NMV1FQQoKLaNhNpEL2xkYjfFZ5cLN06V94z5PBmOm4S6J JS3w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:cc:to:subject:from:date; bh=fcnG0z8zIeotZytSy8V6bcKcSC2SZY63F56CuAdn6w0=; b=bBuM+nBtNwG02n1pv9ybbNW/0OSdMHzBwttM9I6ye3M+6Adc52NED5GUpIJJAlgBl9 bvBE976ZlTtMuUWtUhbM0on2mC0oMDWoVwsapAhfQfOs+9bpULX93rLa5ZrHSLfCPYuk 5PjydAnOXC7+WjL4d8CCMMzkvii8FmZnZSpaHpVuB4Yna9gOyghrxm36+Psr4ob8coez JX3iS8KTwRNeW4z5GvLUw6CkXyfZcDnd0YXE+hITAMWo5YTMPB99xNQ9UUUgIAcyJRus 8yjo9iptw4Xzu3Pa+3Ypk9YhnhfHOQq/Vjhb49XuUkNpXWq5LNX8pUkWAOG4SOpL54f/ 5AUQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=crapouillou.net Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id o13si12621842pgv.352.2021.10.11.09.37.03; Mon, 11 Oct 2021 09:37:17 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=crapouillou.net Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242366AbhJKOOU convert rfc822-to-8bit (ORCPT + 99 others); Mon, 11 Oct 2021 10:14:20 -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: linux-kernel@vger.kernel.org Hi Vinod, Le lun., ao?t 30 2021 at 10:48:52 +0100, Paul Cercueil a ?crit : > Hi, > > Le dim., ao?t 29 2021 at 21:58:05 +0200, Artur Rojek > a ?crit : >> 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 >> >