From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rob Herring <robh+dt@kernel.org>
Subject: Re: [PATCH V2 2/2] dt-bindings: interrupt-controller: Update csky mpintc
Date: Mon, 21 Jan 2019 08:12:15 -0600
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Cc: Thomas Gleixner <tglx@linutronix.de>, Jason Cooper <jason@lakedaemon.net>, Marc Zyngier <marc.zyngier@arm.com>, Mark Rutland <mark.rutland@arm.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, devicetree@vger.kernel.org, Guo Ren <ren_guo@c-sky.com>
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On Fri, Jan 18, 2019 at 10:53 AM <guoren@kernel.org> wrote:
>
> From: Guo Ren <ren_guo@c-sky.com>
>
> Add trigger type and priority setting for csky,mpintc.
>
> Signed-off-by: Guo Ren <ren_guo@c-sky.com>
> ---
>  .../bindings/interrupt-controller/csky,mpintc.txt  | 33 +++++++++++++++++++---
>  1 file changed, 29 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt b/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt
> index ab921f1..badbd38 100644
> --- a/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt
> +++ b/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt
> @@ -6,11 +6,18 @@ C-SKY Multi-processors Interrupt Controller is designed for ck807/ck810/ck860
>  SMP soc, and it also could be used in non-SMP system.
>
>  Interrupt number definition:
> -
>    0-15  : software irq, and we use 15 as our IPI_IRQ.
>   16-31  : private  irq, and we use 16 as the co-processor timer.
>   31-1024: common irq for soc ip.
>
> +Interrupt triger mode:
> + IRQ_TYPE_LEVEL_HIGH (default)
> + IRQ_TYPE_LEVEL_LOW
> + IRQ_TYPE_EDGE_RISING
> + IRQ_TYPE_EDGE_FALLING
> +
> +Interrupt priority range: 0-255
> +
>  =============================
>  intc node bindings definition
>  =============================
> @@ -26,15 +33,33 @@ intc node bindings definition
>         - #interrupt-cells
>                 Usage: required
>                 Value type: <u32>
> -               Definition: must be <1>
> +               Definition: could be <1> or <2> or <3>

For a given controller, '#interrupt-cells' shouldn't really be
variable. If there are different capabilities, then you should have
different compatible strings.

Rob