From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anatolij Gustschin Date: Fri, 9 Aug 2013 21:50:31 +0200 Subject: [U-Boot] [PATCH 01/11] dma: apbh: Add special circular mode for LCD In-Reply-To: <1375220281-11132-2-git-send-email-marex@denx.de> References: <1375220281-11132-1-git-send-email-marex@denx.de> <1375220281-11132-2-git-send-email-marex@denx.de> Message-ID: <20130809215031.45583440@crub> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Tue, 30 Jul 2013 23:37:51 +0200 Marek Vasut wrote: > Add special function that executes a specially crafted circular > DMA descriptor. The function doesn't wait for the descriptor to > finish the transfer, since the descritor never finishes. This is > useful when operating a SmartLCD through the LCDIF interface, as > the LCDIF does not give us any means to have continuous refresh > of the SmartLCD. Instead, the RUN bit in the LCDIF CTRL register > must be triggered manually. This can be worked around by starting > an DMA transfer which continuously sets the RUN bit. This function > allows starting exactly such transfer. > > Signed-off-by: Marek Vasut > Cc: Anatolij Gustschin > Cc: Fabio Estevam > Cc: Otavio Salvador > Cc: Stefano Babic > --- > arch/arm/include/asm/imx-common/dma.h | 2 ++ > drivers/dma/apbh_dma.c | 22 ++++++++++++++++++++++ > 2 files changed, 24 insertions(+) Applied to u-boot-video/master. Thanks! Anatolij