On 02/15/2018 12:41 AM, Bjorn Andersson wrote:

[..]

quoted

quoted

+
+               qup_1: geni-se@ac0000 {

Color me confused.  So you're saying here that this is "qup_1".
...but above you turn the pinmux for pins "GPIO4" and "GPIO5" to
"qup9", right?  So UART2 is on "qup 1" and "qup 9"?

...OK, so I stared at manuals a bunch more, and _maybe_ I get it.
Maybe there are 3 "QUP v3 modules" each of which handles up to 8
"QUP"s.  So QUP 9 is on "QUP module 1", is that right?  If everyone
understands this already and it's just me that's confused then I guess
you can just ignore this comment.  However, if you can think of any
better alias than "qup_1" that makes this less confusing then that
would make me extra happy.  Like maybe "qupv3_id_1" to match the
manual?

This is indeed a source of confusion, in particular since there tend to
be different numbering depending on what part of the puzzle you look at.
But you're right that each QUP has a number of engines, each one being a
UART/I2C/SPI controller.

I don't see a reason for labeling this particular node though, aliases
references individual engines, not the wrapper.

makes sense, I'll just drop the label.


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