mips: msp71xx/serial: add workaround for DW UART

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The Synopsys DesignWare UART in pmc-sierra msp71xx has an extra feature
where the UART detects a write attempt to the LCR whilst busy and raises
an interrupt.  The driver needs to clear the interrupt and rewrite the
LCR.  Move this into platform code and out of the 8250 driver.

Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Jamie Iles 2011-08-15 10:17:54 +01:00 • committed by Greg Kroah-Hartman

parent 91e8db593c

commit 03972fc214

1 changed files with 65 additions and 4 deletions

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arch/mips/pmc-sierra/msp71xx/msp_serial.c

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