On 14-07-19, 17:55, Paul Cercueil wrote: > The current driver works perfectly fine on every generation of the > JZ47xx SoCs, except on the JZ4740. > > There, when hardware descriptors are chained together (with the LINK > bit set), the next descriptor isn't automatically fetched as it should - > instead, an interrupt is raised, even if the TIE bit (Transfer Interrupt > Enable) bit is cleared. When it happens, the DMA transfer seems to be > stopped (it doesn't chain), and it's uncertain how many bytes have > actually been transferred. > > Until somebody smarter than me can figure out how to make chained > descriptors work on the JZ4740, we now disable chained descriptors on > that particular SoC. Applied, thanks -- ~Vinod
