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serial: Indicate fintek option may also be required for RS232 support 

The current config comment for SERIAL_8250_FINTEK implies that this
option is only needed when one wants to support RS485. As it turns
out we also need to enable this option for RS232 support to function
correctly on some variants.

For example for variants such as the F71869AD attempting to use
multiple RS232 ports simultaneously without this option enabled can
result in data corruption.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Link: https://lore.kernel.org/r/20230521075046.3539376-1-james.hilliard1@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
James Hilliard 2023-05-21 01:50:44 -06:00 committed by Greg Kroah-Hartman
parent 20ec397d69
commit 1b997aef4f
1 changed files with 6 additions and 4 deletions
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10
drivers/tty/serial/8250/Kconfig
View File

@ -71,14 +71,16 @@ config SERIAL_8250_16550A_VARIANTS
console, you can say N here.
config SERIAL_8250_FINTEK
bool "Support for Fintek F81216A LPC to 4 UART RS485 API"
bool "Support for Fintek variants"
depends on SERIAL_8250
help
Selecting this option will add support for the RS485 capabilities
of the Fintek F81216A LPC to 4 UART.
Selecting this option will add support for the RS232 and RS485
capabilities of the Fintek F81216A LPC to 4 UART as well similar
variants.
If this option is not selected the device will be configured as a
standard 16550A serial port.
standard 16550A serial port, however the device may not function
correctly without this option enabled.
If unsure, say N.