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Date:   Sun, 12 Apr 2020 23:39:21 +0530
        Manivannan Sadhasivam <>
Subject: [PATCH 0/2] Add software flow control support for STM32 UART

From: Manivannan Sadhasivam <>


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.


Manivannan Sadhasivam (2):
  dt-bindings: serial: Add binding for software flow control in STM32
  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(-)


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