From: Manivannan Sadhasivam <mani@xxxxxxxxxx>
Hello,
This patchset adds software flow control support for STM32 UART controller.
This is necessary for the upcoming STM32MP1 based board called Stinger96
IoT-Box. On that board, a bluetooth chip is connected to one of the UART
controller but the CTS/RTS lines got swapped mistakenly. So in order to
workaround that hardware bug and also to support the usecase of using only
Tx/Rx pins, this patchset adds software flow control support.
This patchset has been validated w/ Stinger96 IoT-Box connected to Murata
WiFi-BT combo chip.
Thanks,
Mani
Manivannan Sadhasivam (2):
dt-bindings: serial: Add binding for software flow control in STM32
UART
tty: serial: Add software flow control support for STM32 USART
.../bindings/serial/st,stm32-uart.yaml | 15 +-
drivers/tty/serial/stm32-usart.c | 143 +++++++++++++++++-
drivers/tty/serial/stm32-usart.h | 4 +
3 files changed, 155 insertions(+), 7 deletions(-)
--
2.17.1
