serial: stm32: add earlycon support

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Add early console support in stm32 uart driver.

Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Valentin Caron <valentin.caron@foss.st.com>
Link: https://lore.kernel.org/r/20220419085330.1178925-4-valentin.caron@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Valentin Caron 2022-04-19 10:53:30 +02:00 • committed by Greg Kroah-Hartman

parent 1f507b3aec

commit 8043b16f52

2 changed files with 52 additions and 0 deletions

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1

drivers/tty/serial/Kconfig

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51

drivers/tty/serial/stm32-usart.c

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