[PATCH 1/1] mmc: host: enable OMAP DMA engine support for omap hosts by default
From: Shilimkar, Santosh <hidden>
Date: 2012-07-17 06:45:23
Also in:
linux-mmc, linux-omap
Hi, On Tue, Jul 17, 2012 at 6:00 AM, Javier Martinez Canillas [off-list ref] wrote:
The OMAP MMC and OMAP High Speed MMC hosts now use entirely the DMA engine API instead of the previous private DMA API implementation. So, if the kernel is built with support for any of these hosts but it doesn't support DMA devices nor OMAP DMA support, it fails when trying to obtain a DMA channel which leads to the following error on an OMAP3 IGEPv2 Rev.C board (and probably on most OMAP boards with MMC support): [ 2.199981] omap_hsmmc omap_hsmmc.1: unable to obtain RX DMA engine channel 48 [ 2.215087] omap_hsmmc omap_hsmmc.0: unable to obtain RX DMA engine channel 62 selecting automatically CONFIG_DMADEVICES and CONFIG_DMA_OMAP solves it. Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org> ---
Considering, we are updating drivers to select the DMA engine, can you also include "drivers/spi/spi-omap2-mcspi.c" which is also updated for DMA engine. Regards Santosh