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[0/3] serial: stm32: add earlycon and polling mode

Message ID 20220407123109.132035-1-valentin.caron@foss.st.com
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Series serial: stm32: add earlycon and polling mode | expand

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Valentin Caron April 7, 2022, 12:31 p.m. UTC
- Add support of early console and polling mode in stm32-usart driver.
- Avoid a possible infinite loop in putchar function.

Valentin Caron (3):
  serial: stm32: remove infinite loop possibility in putchar function
  serial: stm32: add KGDB support
  serial: stm32: add earlycon support

 .../admin-guide/kernel-parameters.txt         |   6 ++
 drivers/tty/serial/Kconfig                    |   1 +
 drivers/tty/serial/stm32-usart.c              | 101 +++++++++++++++++-
 drivers/tty/serial/stm32-usart.h              |   2 +
 4 files changed, 105 insertions(+), 5 deletions(-)