Had planned a range of TTY drivers for SPI/SlimBus 'ala usb-serial device driver for that.
And hence somehow assumed TTY line discipline should be enough.
SPI/SlimBus I tend to agree, their device nodes in user space is not used, and settings like bus freq, CPOL/CPHA are all set via drivers (for spi atleast).
I had called it SHUART for some reason earlier, Yep point to be considered.
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