On Friday, February 28, 2014 at 11:59:25 AM, Lothar Waßmann wrote: > Hi, > > Marek Vasut wrote: > > On Friday, February 28, 2014 at 06:19:18 AM, Yao Yuan wrote: > > > > [...] > > > > > Yes, here have two dma channels, one for RX and the other one for TX. > > > When we request the channel we should determine it for TX or RX. > > > > Sorry, I don't quite understand this. If you have two DMA channels, can > > you not use them both to do full-duplex SPI transfer ? > > SPI != I2C You got me, sorry. Best regards, Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html