On Thu, Apr 30, 2015 at 08:34:36PM +0200, Marek Vasut wrote: > 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. Just noticed this. Yes, that would definitely be a better option! Brian -- 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
