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 <mporter@xxxxxx> >> >> 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. 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 <nsekhar@xxxxxx> Thanks, Sekhar -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
