linux-kernel - Re: [PATCH net-next v3 2/6] dt-bindings: net: lan966x: Extend with the analyzer interrupt

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Date:   Thu, 9 Dec 2021 16:42:47 +0100
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     Vladimir Oltean <vladimir.oltean@....com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "f.fainelli@...il.com" <f.fainelli@...il.com>,
        "vivien.didelot@...il.com" <vivien.didelot@...il.com>,
        "andrew@...n.ch" <andrew@...n.ch>
Subject: Re: [PATCH net-next v3 2/6] dt-bindings: net: lan966x: Extend with
 the analyzer interrupt

The 12/09/2021 10:58, Vladimir Oltean wrote:
> 
> On Thu, Dec 09, 2021 at 10:46:11AM +0100, Horatiu Vultur wrote:
> > Extend dt-bindings for lan966x with analyzer interrupt.
> > This interrupt can be generated for example when the HW learn/forgets
> > an entry in the MAC table.
> >
> > Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
> > ---
> 
> Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>
> 
> Why don't you describe your hardware in the device tree all at once?
> Doing it piece by piece means that every time when you add a new
> functionality you need to be compatible with the absence of a certain
> reg, interrupt etc.

I though it is more clear what is added in the patch series.
But then, if for example add more interrupts in DT than what the
driver support, that would not be an issue?

> 
> >  .../devicetree/bindings/net/microchip,lan966x-switch.yaml       | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml b/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
> > index 5bee665d5fcf..e79e4e166ad8 100644
> > --- a/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
> > +++ b/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
> > @@ -37,12 +37,14 @@ properties:
> >      items:
> >        - description: register based extraction
> >        - description: frame dma based extraction
> > +      - description: analyzer interrupt
> >
> >    interrupt-names:
> >      minItems: 1
> >      items:
> >        - const: xtr
> >        - const: fdma
> > +      - const: ana
> >
> >    resets:
> >      items:
> > --
> > 2.33.0
> >

-- 
/Horatiu