Hello,
Are there any objections or concerns on adding UPF_FIXED_TYPE to the
port flags for the of_serial driver? Or maybe - are there any
implementations using of_serial that rely on the 8250's probing to
determine type? Based on the configs it looks like just the 4xx and 6xx
variants are using this driver.
The UPF_FIXED_TYPE is a flag added earlier this year to bypass the
8250's autoconfig probing to determine type ("Serial: Allow port type to
be specified when calling serial8250_register_port").
On our 16750 capable parts, the 8250's autoconfig probing is identifying
the UARTs as a 16550a. Adding this flag to of_serial's would let us
drive the type directly from the device tree. Thus we could avoid
polluting the 8250 driver with processor-specific tests.
Thoughts or other suggestions?
Thanks,
Dave Mitchell
AppliedMicro
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