diff options
| author | Marek Vasut <marex@denx.de> | 2020-08-31 19:10:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-04 17:16:40 +0200 |
| commit | ad0c2748059fff13e8295ae91f51073d6c0311b7 (patch) | |
| tree | 1b5dd714fdb75f83caa150753f4976fb85d12312 /drivers/tty/serial/8250 | |
| parent | 0fb9342d06b0f667b915ba58bfefc030e534a218 (diff) | |
serial: stm32: Add RS485 RTS GPIO control again
While the STM32 does support RS485 drive-enable control within the
UART IP itself, some systems have the drive-enable line connected
to a pin which cannot be pinmuxed as RTS. Add support for toggling
the RTS GPIO line using the modem control GPIOs to provide at least
some sort of emulation.
Fixes: 7df5081cbf5e ("serial: stm32: Add RS485 RTS GPIO control")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: Fabrice Gasnier <fabrice.gasnier@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
Link: https://lore.kernel.org/r/20200831171045.205691-1-marex@denx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/8250')
0 files changed, 0 insertions, 0 deletions