[Bug 266990] FreeBSD can not drive 16950 chip correctly

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 14 Nov 2023 08:01:48 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266990

--- Comment #4 from Andrey Korobkov <alster@vinterdalen.se> ---
In 14.0-RELEASE it still works well, but new message appeared: "ns8250: UART
FCR is broken". What does it mean?

# dmesg.boot
puc0: <Moxa Technologies, Smartio CP-104EL-A/PCIe> port
0x1000-0x103f,0x1040-0x104f mem 0xba000000-0xba000fff irq 27 at device 0.0 on p
ci7
ns8250: UART FCR is broken
ns8250: UART FCR is broken
uart2: <16950 or compatible> at port 1 on puc0
ns8250: UART FCR is broken
ns8250: UART FCR is broken
uart3: <16950 or compatible> at port 2 on puc0
ns8250: UART FCR is broken
ns8250: UART FCR is broken
uart4: <16950 or compatible> at port 3 on puc0
ns8250: UART FCR is broken
ns8250: UART FCR is broken
uart5: <16950 or compatible> at port 4 on puc0

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