On Thu, 2 Jul 2015, Jared McNeill wrote:
On Wed, 1 Jul 2015, Tobias Nygren wrote:2) timeout waiting for BUSY ack. Probably need to unmask some interrupt somewhere. (Any clues?)It looks like COM_16750 option is in the kernel config (arch/arm/allwinner/files.awin) but the hardware only supports 16450 and 16550 modes according to the datasheet. Try removing it?
Ah but the BUSY bit is still present on this hardware. Maybe we need a delay in that loop instead.