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serial: of_serial: Support big-endian register accesses

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If the device node has a "big-endian" property and 32-bit registers, tell
the serial driver to use UPIO_MEM32BE instead of UPIO_MEM32.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Kevin Cernekee 2015-04-09 13:05:18 -07:00 committed by Rob Herring
parent c627f2ceb6
commit ebc5e20082
1 changed files with 2 additions and 1 deletions
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3
drivers/tty/serial/of_serial.c
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@ -115,7 +115,8 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
port->iotype = UPIO_MEM;
break;
case 4:
port->iotype = UPIO_MEM32;
port->iotype = of_device_is_big_endian(np) ?
UPIO_MEM32BE : UPIO_MEM32;
break;
default:
dev_warn(&ofdev->dev, "unsupported reg-io-width (%d)\n",