[PATCH 4/9] pinctrl: meson: allow gpio to request irq

On Fri, Oct 21, 2016 at 11:06 AM, Jerome Brunet [off-list ref] wrote:

quoted

Isn't this usecase (also as described in the cover letter) a textbook
example of when you should be using hierarchical irqdomain?

Please check with Marc et al on hierarchical irqdomains.

Linus,
Do you mean I should create a new hierarchical irqdomains in each of
the two pinctrl instances we have in these SoC, these domains being
stacked on the one I just added for controller in irqchip ?

I did not understand this is what you meant when I asked you the
question at ELCE.

Honestly, I do not understand when and where to properly use
hierarchical irqdomain, even after Marc's talk at ELC-E.

Which is problematic since quite a few GPIO drivers now
need to use them.

I will review his slides, in the meantime I would say: whatever
Marc ACKs is fine with me. I trust this guy 100%. So I guess I
could ask that he ACK the entire chain of patches
from GIC->specialchip->GPIO.

Yours,
Linus Walleij