linux-kernel - Re: [PATCH 03/19] dt-bindings: mrvl,intc: Add a MMP3 interrupt controller

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Date:   Wed, 21 Aug 2019 16:11:03 -0500
From:   Rob Herring <robh@...nel.org>
To:     Lubomir Rintel <lkundrak@...sk>
Cc:     Olof Johansson <olof@...om.net>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Russell King <linux@...linux.org.uk>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org
Subject: Re: [PATCH 03/19] dt-bindings: mrvl,intc: Add a MMP3 interrupt
 controller

On Fri, Aug 09, 2019 at 11:31:42AM +0200, Lubomir Rintel wrote:
> Similar to MMP2 one, but has an extra range for the other core. The
> muxes stay the same.
> 
> Signed-off-by: Lubomir Rintel <lkundrak@...sk>
> ---
>  .../interrupt-controller/mrvl,intc.txt        | 23 ++++++++++++++-----
>  1 file changed, 17 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/mrvl,intc.txt b/Documentation/devicetree/bindings/interrupt-controller/mrvl,intc.txt
> index 608fee15a4cfc..41c131d026f94 100644
> --- a/Documentation/devicetree/bindings/interrupt-controller/mrvl,intc.txt
> +++ b/Documentation/devicetree/bindings/interrupt-controller/mrvl,intc.txt
> @@ -1,13 +1,15 @@
>  * Marvell MMP Interrupt controller
>  
>  Required properties:
> -- compatible : Should be "mrvl,mmp-intc", "mrvl,mmp2-intc" or
> -  "mrvl,mmp2-mux-intc"
> +- compatible : Should be "mrvl,mmp-intc", "mrvl,mmp2-intc",
> +  "marvell,mmp3-intc", "mrvl,mmp2-mux-intc"

Reformat to 1 valid combination per line.

>  - reg : Address and length of the register set of the interrupt controller.
>    If the interrupt controller is intc, address and length means the range
> -  of the whole interrupt controller. If the interrupt controller is mux-intc,
> -  address and length means one register. Since address of mux-intc is in the
> -  range of intc. mux-intc is secondary interrupt controller.
> +  of the whole interrupt controller. The "marvell,mmp3-intc" controller
> +  also has a secondary range for the second CPU core.  If the interrupt
> +  controller is mux-intc, address and length means one register. Since
> +  address of mux-intc is in the range of intc. mux-intc is secondary
> +  interrupt controller.
>  - reg-names : Name of the register set of the interrupt controller. It's
>    only required in mux-intc interrupt controller.
>  - interrupts : Should be the port interrupt shared by mux interrupts. It's
> @@ -20,7 +22,7 @@ Required properties:
>  - mrvl,clr-mfp-irq : Specifies the interrupt that needs to clear MFP edge
>    detection first.
>  
> -Example:
> +Examples:
>  	intc: interrupt-controller@...82000 {
>  		compatible = "mrvl,mmp2-intc";
>  		interrupt-controller;
> @@ -29,6 +31,15 @@ Example:
>  		mrvl,intc-nr-irqs = <64>;
>  	};
>  
> +	intc: interrupt-controller@...82000 {

What's special about this to warrant another example. Examples aren't 
supposed to be an enumeration of all possible dts entries.

> +		compatible = "marvell,mmp3-intc";
> +		interrupt-controller;
> +		#interrupt-cells = <1>;
> +		reg = <0xd4282000 0x1000>,
> +		      <0xd4284000 0x100>;
> +		mrvl,intc-nr-irqs = <64>;
> +	};
> +
>  	intcmux4@...82150 {
>  		compatible = "mrvl,mmp2-mux-intc";
>  		interrupts = <4>;
> -- 
> 2.21.0
>