Hello,
after better describing the problem in FSL's 8250 variant, here come two
fixes needed to reliably use RS485 on this type of UART.
The patches were originally developed and tested on top of 5.15.y.
Best regards
Uwe
Uwe Kleine-König (3):
serial: 8250-fsl: Expand description of the MPC83xx UART's
misbehaviour
serial: 8250: Clear IIR.RDI in serial8250_clear_fifos()
serial: 8250-fsl: Only do the break workaround if IIR signals RLSI
drivers/tty/serial/8250/8250_fsl.c | 17 +++++++++++++++--
drivers/tty/serial/8250/8250_port.c | 12 ++++++++++++
2 files changed, 27 insertions(+), 2 deletions(-)
base-commit: ac9a78681b921877518763ba0e89202254349d1b
--
2.39.2
