serial: 8250_ingenic: Enable FIFO for Ingenic UARTs

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Enable the TX/RX FIFOs present on UARTs in Ingenic SoCs.
FIFO sizes vary per device so match these based on
the OF compatible string

Enabling the FIFOs permits much faster transfer with
lower CPU overhead.

Tested on Ingenic JZ4780 on the MIPS Ci20 Creator board

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Matt Redfearn 2015-09-08 16:55:35 +01:00 • committed by Greg Kroah-Hartman

parent 129a45b1a9

commit c74997bdfe

1 changed files with 43 additions and 4 deletions

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drivers/tty/serial/8250/8250_ingenic.c

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