topic spidev DMA in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/spidev-DMA/m-p/302359#M38279 <HTML><HEAD></HEAD><BODY><P>Hi.</P><P></P><P>I'm trying to transfer a lot of data via the spi (programming another chip).</P><P>I notice that can maximum transfer 255 bytes per transaction (if I try more, it won't transfer anything).</P><P>Is it possible to use the DMA to do this via spidev or do I have to write my own "driver" to do that?</P><P></P><P>Thanks,</P><P>Niklas</P></BODY></HTML> Thu, 24 Apr 2014 01:16:09 GMT niklasmolin 2014-04-24T01:16:09Z spidev DMA https://community.nxp.com/t5/i-MX-Processors/spidev-DMA/m-p/302359#M38279 <HTML><HEAD></HEAD><BODY><P>Hi.</P><P></P><P>I'm trying to transfer a lot of data via the spi (programming another chip).</P><P>I notice that can maximum transfer 255 bytes per transaction (if I try more, it won't transfer anything).</P><P>Is it possible to use the DMA to do this via spidev or do I have to write my own "driver" to do that?</P><P></P><P>Thanks,</P><P>Niklas</P></BODY></HTML> Thu, 24 Apr 2014 01:16:09 GMT https://community.nxp.com/t5/i-MX-Processors/spidev-DMA/m-p/302359#M38279 niklasmolin 2014-04-24T01:16:09Z