> >This is actually not needed. Clocks are set through the setup() method
> ...
>
> Where is it supposed to call setup? I guess it's anyway gonna be
> per-transfer, right?
> Or am I missing something?
When the device is created, the core calls setup() to get things like
chipselect polarity sorted out and put into the inactive state. That
matches the board-specific defaults associated with that device, which
would be a function of voltage, routing, and more.
And from then on, it'd be rare to ever call setup() again ... though
drivers certainly could do that between spi_message interactions with
a given device.
- Dave
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