[PATCH v4 1/5] dt-bindings: irqchip: Add PRU-ICSS interrupt controller bindings

[Grzegorz Jaszczyk]

On Fri, 31 Jul 2020 at 16:09, David Lechner <david at lechnology.com> wrote:
>
> On 7/31/20 6:48 AM, Grzegorz Jaszczyk wrote:
> > On Wed, 29 Jul 2020 at 19:34, David Lechner <david at lechnology.com> wrote:
> >> It is not clear what the meaning of each cell is. Looking at later patches, it
> >> looks like the first cell is the PRU system event number, the second cell is the
> >> channel and the third cell is the host event number.
> >
> > Ok, how about updating above description like this:
> > Client users shall use the PRU System event number (the interrupt source
> > that the client is interested in) [cell 1], PRU channel [cell 2] and PRU
> > host_intr (target) [cell 3] as the value of the interrupts property in their
> > node.  The system events can be mapped to some output host interrupts through 2
> > levels of many-to-one mapping i.e. events to channel mapping and channels to
> > host interrupts so through this property entire mapping is provided.
>
> Cell 3 is host_intr0-7? How would we map to other host events?

Again this is due to misleading TRM nomenclature: host_intr vs host
interrupts (one that we discuss in patch #2). I will use "and PRU host
event (target) [cell 3]...". Sorry for my mistake.

Thank you,
Grzegorz