> On 10.09.2015, at 17:48, Noralf Trønnes <nor...@tronnes.org> wrote: > > This looks interesting. > But there's a challenge with the uart1 and the 8250 driver. > > Phil Elwell has this to say: > This means that that UART1 isn't an exact clone of a 8250 UART. > In a particular, the clock divisor is calculated differently. > A standard 8250 derives the baud rate as clock/(divisor16), > whereas the BCM2835 mini UART uses clock/(divisor8). This means > that if you want to use the standard driver then you need to lie > about the clock frequency, providing a value is twice the real > value, in order for a suitable divisor to be calculated. > > Ref: https://github.com/raspberrypi/linux/pull/1008#issuecomment-139234607 > > So either we need a new uart1 driver or a doubled clock freq. somehow.
Found out the same thing and communicated it to Eric - not knowing about the different divider… Martin-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
