linux-kernel - Re: [PATCH v2 2/9] dt-bindings: interrupt-controller: add DT binding for meson GPIO interrupt controller

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Message-ID: <1477561244.2482.198.camel@baylibre.com>
Date:   Thu, 27 Oct 2016 11:40:44 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Mark Rutland <mark.rutland@....com>, Rob Herring <robh@...nel.org>
Cc:     Carlo Caione <carlo@...one.org>,
        Kevin Hilman <khilman@...libre.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Russell King <linux@...linux.org.uk>
Subject: Re: [PATCH v2 2/9] dt-bindings: interrupt-controller: add DT
 binding for meson GPIO interrupt controller

On Thu, 2016-10-27 at 10:32 +0100, Mark Rutland wrote:
> On Wed, Oct 26, 2016 at 04:42:35PM -0500, Rob Herring wrote:
> > 
> > On Wed, Oct 19, 2016 at 05:21:13PM +0200, Jerome Brunet wrote:
> > > 
> > > 
> > > This commit adds the device tree bindings description for
> > > Amlogic's GPIO
> > > interrupt controller available on the meson8, meson8b and gxbb
> > > SoC families
> > > 
> > > Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
> > > ---
> > > Rob, I did not include the Ack you gave for the RFC as bindings
> > > have slightly
> > > changed. Only the interrupt property has be removed following a
> > > discussion I
> > > had with Marc
> > 
> > As Mark R already said, you should keep the interrupts property.
> 
> To be clear, the interrupt routing should be described *somehow*,
> though
> I don't think the generic interrupts property is correct, as this is
> an
> interrupt *router*, i.e. this device doesn't own the interrupt, it
> just
> joins two parts of the line together (and so flags are meaningless).
> 
> Thanks,
> Mark.

Indeed Mark,

I already rewritten the driver taking Marc's comment into account.
There will be 2 properties added to the DT:
 - meson,upstream-interrupts : an array with the 8 gic interrupt used
as output of the controller
-  meson,num-input-mux : the number of inputs (pads) available to the
muxes

I'm looking for solution to the "create mapping" issue we have in
pinctrl (patch 4) before posting a v3.

If you think these properties should be different, feel free to tell me
now.

Thx
Jerome