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| author | Marek Vasut <marex@denx.de> | 2020-07-25 16:49:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-30 08:46:22 +0200 |
| commit | 7df5081cbf5e1c342acd30850a483ef504519937 (patch) | |
| tree | 656f57830f9eeee82fcc2007adf36430fc1b8946 /lib/nmi_backtrace.c | |
| parent | serial: 8250_dw: Fix common clocks usage race condition (diff) | |
| download | linux-7df5081cbf5e1c342acd30850a483ef504519937.tar.xz linux-7df5081cbf5e1c342acd30850a483ef504519937.zip | |
serial: stm32: Add RS485 RTS GPIO control
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.
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-stm32@st-md-mailman.stormreply.com
Link: https://lore.kernel.org/r/20200725144947.537007-1-marex@denx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/nmi_backtrace.c')
0 files changed, 0 insertions, 0 deletions