Hi, On Wed, Aug 24, 2016 at 04:21:35PM +0800, Icenowy Zheng wrote: > Hi Maxime, > > 24.08.2016, 14:02, "Maxime Ripard" : > > Hi, > > > > On Tue, Aug 23, 2016 at 09:55:46PM +0800, Icenowy Zheng wrote: > >>  A23/A33 has a NAND controller which can now be used properly. > >> > >>  Add a device node for it. > >> > >>  The DMA function cannot work because of changed DMA IP block, so it's > >>  temporarily removed in the device node. However, with PIO mode it can still > >>  work. > > > > What is preventing the NAND driver to work with DMA with the sun6i driver? > > It seems that under sun6i we should use dedicated rx and tx DMAs, but not a > "rxtx" DMA. Ah, I see. I just applied your patch, thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com