On Thursday, April 30, 2015 at 06:56:18 PM, Michal Suchanek wrote: > On 30 April 2015 at 18:30, <Thomas.Betker@xxxxxxxxxxxxxxxxx> wrote: > > Hello Michal: > >> I tried to connect a SPI NOR flash to my sunxi board and due to the > > > > current > > > >> sunxi SPI driver limitations it does not work. > >> > >> The SPI driver returns an error when more than 64 bytes are > >> transferred at once > >> due to lack of DMA support. > > > > Wouldn't it be easier to fix the SPI driver to handle transfers larger > > than 64 bytes, filling and draining the FIFO multiple times if > > neccessary? (As far as I can tell, most SPI drivers do this.) > > Yes, the intent is to fix this by adding dma support to the driver, > eventually. > > The patch might be still useful for other hardware with developing SPI > support. Please just fix the controller driver to correctly handle arbitrary transfer lengths. Best regards, Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
