serial: sh-sci: Correct pin initialization on (H)SCIF

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Correct pin initialization on (H)SCIF:
  - RTS must be deasserted (it's active low),
  - SCK must be an input, as it may be used as the optional external
    clock input.

Initial pin configuration must always be done:
  - Regardless of the presence of dedicated RTS and CTS pins: if the
    register exists, the RTS/CTS bits exist, too,
  - Regardless of hardware flow control being enabled or not: RTS must
    be deasserted.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Geert Uytterhoeven 2016-06-03 12:00:08 +02:00 • committed by Greg Kroah-Hartman

parent 4780c09f7a

commit d2b9775d79

1 changed files with 8 additions and 15 deletions

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drivers/tty/serial/sh-sci.c

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