Received: by 2002:a05:6a10:1d13:0:0:0:0 with SMTP id pp19csp3460593pxb; Mon, 30 Aug 2021 02:51:04 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxHVzff5VyKh5TFsvwGPm5dXZ4xNGMrQyhvY6jFSipu6drrBtlHUgw5/vZDiGDw76XKN4i7 X-Received: by 2002:a05:6e02:926:: with SMTP id o6mr10999776ilt.167.1630317064286; Mon, 30 Aug 2021 02:51:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1630317064; cv=none; d=google.com; s=arc-20160816; b=HQMdjsFhmk7NMnC1YOfdQoCshX4iMzRpq012Bn2b2+O6Azk6GvQo4RpldDCAVxYHJp 72X4PECa2C8s93ZqVqk0u4Qom81kLkn1QbT1z85FKV8LwtJ8XoEl1W+HB9t9mWvE2188 CO+HTQ6dpxLoyUTTuZ4QzrGDcZM3iw3Ziddl+ZxGC/dtiMN1X4wkBEP0ZU55nrLUdi6U xmNAMFXIUfH44luc3IPI0Q8nfLJPAy6qInd2Nh/a2QzacyiXVMjxBAvds6L7Idna8nMp 1I3F1Mx2z6JFe6xy7tNxqIXkOMRS/fnsGAslr5RmDi34cUAL16IoFXnflkZHdtuH6Qhk 3Z8A== 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=/pV4IK9f5pMllpRIEU59ec8RP0uZzLFa8cOAFLrLxZ4=; b=SV3gPbvRBVderFL6fCHcvNQZ3GYF5mOM3NgCf0AgvPYnrYne20N/+GMgFdo05syYc2 jUHJwrXUcx2eFL/C48U/KZVzchHdm1RUixSkLusTUABziV6IyctkO6mBqJIFvH2aAYc+ sXM9YxMJb4BKvxWGzAqDYQm4gc1M48wRSn9+CWgdgPEBYQ1SUUYN4ngCkEnUB/zyIZFA P7B29GkfgqqvWZTpM2IGdl1qw0KOtvfeN4vZIgllAGIq7H2EhHSuK7SjF9yGfjd8GSeC 4QscEuwKqFWC0+EXZtixLE6bNjPaIaNJ5k5nyPvvPfDzDdbf7sjRYNo3ncVEUeS1bm/f Ezxg== 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 4si4749105jaj.45.2021.08.30.02.50.53; Mon, 30 Aug 2021 02:51:04 -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 S236254AbhH3Jt7 convert rfc822-to-8bit (ORCPT + 99 others); Mon, 30 Aug 2021 05:49:59 -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: linux-kernel@vger.kernel.org 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 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 >