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| /openbmc/linux/drivers/tty/serial/8250/ |
| H A D | 8250_core.c | 2797f6fb Thu Sep 05 09:34:52 CDT 2013 Heikki Krogerus <heikki.krogerus@linux.intel.com> serial: 8250: don't change the fifo trigger level when using dma
DMA engines usually expect the fifo trigger level to be
aligned with the burst size. It should not be changed even
with small baud rates. This will fix an issue with
Designware DMA engine where the data can not be transferred
over UART with lower baud rates then 2400.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2797f6fb Thu Sep 05 09:34:52 CDT 2013 Heikki Krogerus <heikki.krogerus@linux.intel.com> serial: 8250: don't change the fifo trigger level when using dma
DMA engines usually expect the fifo trigger level to be
aligned with the burst size. It should not be changed even
with small baud rates. This will fix an issue with
Designware DMA engine where the data can not be transferred
over UART with lower baud rates then 2400.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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