On Fri, 2012-08-31 at 21:32 +0530, Sekhar Nori wrote: > Hi Matt, > > On 8/30/2012 8:13 PM, Matt Porter wrote: > > On Thu, Aug 30, 2012 at 07:46:32PM +0530, Sekhar Nori wrote: > >> Hi Matt, > >> > >> On 8/23/2012 6:39 AM, Matt Porter wrote: > >>> Removes use of the DaVinci EDMA private DMA API and replaces > >>> it with use of the DMA engine API. > >>> > >>> Signed-off-by: Matt Porter <mpor...@ti.com> > >> > >> I tried testing this patch on my OMAP-L138 EVM, but SPI fails to > >> initialize after applying the patch. > >> > >> root@arago:~# dmesg | grep -i spi > >> > >> spi_davinci spi_davinci.1: request RX DMA channel failed > >> > > > > Hi Sekhar, > > > > Most likely CONFIG_TI_EDMA is off as it defaults to off in the v3 > > series. Try enabling this and if it's the problem then this error > > path can be fixed to properly fallback to PIO only or fail to > > initialize as needed. > > Yes, this was the problem. Since the SPI driver now depends on > CONFIG_TI_EDMA for basic operation may be select CONFIG_TI_EDMA in > Kconfig if SPI is enabled? That should do until the fallback to PIO is > implemented. Then this should be enabled for SPI. Care to send a patch > > With that fixed, I tested SPI on OMAP-L138 EVM and it works great. > Tested a JFFS2 mount as well as some raw chardev read/write tests. > > Tested-by: Sekhar Nori <nsek...@ti.com> > > Thanks, > Sekhar > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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