serial: fsl_lpuart: RS485 RTS polariy is inverse

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commit 846651eca0 upstream.

The setting of RS485 RTS polarity is inverse in the current driver.

When the property of 'rs485-rts-active-low' is enabled in the dts node,
the RTS signal should be LOW during sending. Otherwise, if there is no
such a property, the RTS should be HIGH during sending.

Fixes: 03895cf41d ("tty: serial: fsl_lpuart: Add support for RS-485")
Cc: stable <stable@kernel.org>
Signed-off-by: Nicolas Diaz <nicolas.diaz@nxp.com>
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Link: https://lore.kernel.org/r/20220805144529.604856-1-shenwei.wang@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Shenwei Wang 2022-08-05 09:45:29 -05:00 • committed by Greg Kroah-Hartman

parent ad936d6dc2

commit a17353e3ce

1 changed files with 2 additions and 2 deletions

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drivers/tty/serial/fsl_lpuart.c

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