netdev - Re: [PATCH/RFC v2 net-next 3/4] ravb: Document binding for r8a7795 SoC

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Message-ID: <CAMuHMdUYhUrT9vBtfPOdDWxHDq+ENhKvg9bmsHZsyyDJ=YtcLw@mail.gmail.com>
Date:	Fri, 11 Sep 2015 10:41:31 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Simon Horman <horms@...ge.net.au>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Kazuya Mizuguchi <kazuya.mizuguchi.ks@...esas.com>
Subject: Re: [PATCH/RFC v2 net-next 3/4] ravb: Document binding for r8a7795 SoC

Hi Simon,

On Fri, Sep 11, 2015 at 10:14 AM, Simon Horman <horms@...ge.net.au> wrote:
>> > @@ -18,6 +21,9 @@ Required properties:
>> >  Optional properties:
>> >  - interrupt-parent: the phandle for the interrupt controller that services
>> >                     interrupts for this device.
>> > +- interrupt-names: One entry per interrupt named "ch%u".
>> > +                  For the R8A7795 SoC this property is mandatory,
>> > +                  and "ch0" through "ch24" are mandatory.
>>
>> This suggests the single multiplexed interrupt on R-Car Gen2 can be called
>> "ch0". Is that what you want? I know the driver doesn't care.
>
> No, its not what I intended.
>
> I think its reasonable to allow the multiplexed interrupt to be named,
> but to what I wonder. The documentation seems to call the interrupt
> "EthernetAVB", which isn't very exciting.

Perhaps "mux", like I did for rspi, cfr.
Documentation/devicetree/bindings/spi/spi-rspi.txt:

  - interrupts       : A list of interrupt-specifiers, one for each entry in
                       interrupt-names.
                       If interrupt-names is not present, an interrupt specifier
                       for a single muxed interrupt.
  - interrupt-names  : A list of interrupt names. Should contain (if present):
                         - "error" for SPEI,
                         - "rx" for SPRI,
                         - "tx" to SPTI,
                         - "mux" for a single muxed interrupt.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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