AFAIK, OMAP-L137 has hardware implementation of spi. Why should they use bit-banging? 2016-07-21 13:02 GMT+03:00 Sekhar Nori <nsekhar@xxxxxx>: > On Wednesday 20 July 2016 07:59 PM, Denis Obrezkov wrote: >> Hello, >> I am trying to use spidev to send messages via spi on OMAP-L137 >> EVM board. >> I have an spidev entry in /dev, but when I try to send data, I have the >> following message: >> >> spidev spi1.0: SPI transfer failed: -22 >> spi_master spi1: failed to transfer one message from queue >> >> Debugging using printk, I found out that a probe function is called, >> and after this transfer_one_message is called. In transfer_one_message >> master->transfer_one() function is called and returned with the error. >> But I can't find the implementation of transfer_one function for davinci_spi. > > It looks like davinci_spi uses bitbang layer so I expect > spi_bitbang_transfer_one() to be called. > > Thanks, > Sekhar -- Regards, Denis Obrezkov -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
