[PATCH 0/4] serial: 8250: Add AN7581 UART support
From: Christian Marangi
Date: Thu Jul 09 2026 - 16:57:19 EST
This is a new version of [1] to support UART driver for
Airoha SoC.
One additional function was needed serial8250_get_baud_rate()
for the driver to work correctly for baud rate calculation.
While at it also try to clarify a long standing issue with
new UART driver when adding new ids for uart_config[].
[1] https://lore.kernel.org/all/20250209210241.2622309-1-benjamin.larsson@xxxxxxxxxx/
Changes compared to [1]:
- Fix all formal error
- Use better compatible names
- Drop unneeded header
- Drop usage of irq (it's filled by the generic function)
- General code cleanup and reorg
- Split to patch and add the UAPI map patch
Benjamin Larsson (1):
dt-bindings: serial: 8250: Add Airoha compatibles
Christian Marangi (3):
serial: 8250: export serial8250_get_baud_rate()
serial: 8250: map UAPI port type to internal enum
serial: 8250: Add Airoha SoC UART and HSUART support
.../devicetree/bindings/serial/8250.yaml | 5 +
drivers/tty/serial/8250/8250.h | 126 ++++++++++++
drivers/tty/serial/8250/8250_airoha.c | 190 ++++++++++++++++++
drivers/tty/serial/8250/8250_port.c | 95 +++++----
drivers/tty/serial/8250/Kconfig | 11 +
drivers/tty/serial/8250/Makefile | 1 +
include/linux/serial_8250.h | 4 +
7 files changed, 393 insertions(+), 39 deletions(-)
create mode 100644 drivers/tty/serial/8250/8250_airoha.c
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2.53.0