From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Warren <swarren@wwwdotorg.org>
Date: Thu, 23 Jul 2015 22:59:45 -0600
Subject: [U-Boot] [PATCH v3 6/7] dwc2: Add dcache support
In-Reply-To: <1437589418-11978-7-git-send-email-alexanders83@web.de>
References: <1437589418-11978-1-git-send-email-alexanders83@web.de>
 <1437589418-11978-7-git-send-email-alexanders83@web.de>
Message-ID: <55B1C641.8080807@wwwdotorg.org>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

On 07/22/2015 12:23 PM, Alexander Stein wrote:
> This adds dcache support for dwc2. The DMA buffers must be DMA aligned and
> is flushed for outgoing transactions before starting transfer. For
> ingoing transactions it is invalidated after the transfer has finished.

> diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c

>  /* We need doubleword-aligned buffers for DMA transfers */
> -DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer, DWC2_DATA_BUF_SIZE, 8);
> -DEFINE_ALIGN_BUFFER(uint8_t, status_buffer, DWC2_STATUS_BUF_SIZE, 8);
> +DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer, DWC2_DATA_BUF_SIZE, ARCH_DMA_MINALIGN);
> +DEFINE_ALIGN_BUFFER(uint8_t, status_buffer, DWC2_STATUS_BUF_SIZE, ARCH_DMA_MINALIGN);

That comment might need updating.