netdev - Re: [PATCH] net: ethernet: faraday: To support device tree usage.

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Message-ID: <7309308.u1IWIyx3Gm@wuerfel>
Date:   Wed, 16 Nov 2016 17:12:44 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Greentime Hu <green.hu@...il.com>, netdev <netdev@...r.kernel.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH] net: ethernet: faraday: To support device tree usage.

On Wednesday, November 16, 2016 3:37:15 PM CET Andrew Lunn wrote:
> On Wed, Nov 16, 2016 at 10:26:52PM +0800, Greentime Hu wrote:
> > On Wed, Nov 16, 2016 at 9:47 PM, Andrew Lunn <andrew@...n.ch> wrote:
> > > On Wed, Nov 16, 2016 at 04:43:15PM +0800, Greentime Hu wrote:
> > >> To support device tree usage for ftmac100.
> > >>
> > >> Signed-off-by: Greentime Hu <green.hu@...il.com>
> > >> ---
> > >>  drivers/net/ethernet/faraday/ftmac100.c |    7 +++++++
> > >>  1 file changed, 7 insertions(+)
> > >>
> > >> diff --git a/drivers/net/ethernet/faraday/ftmac100.c b/drivers/net/ethernet/faraday/ftmac100.c
> > >> index dce5f7b..81dd9e1 100644
> > >> --- a/drivers/net/ethernet/faraday/ftmac100.c
> > >> +++ b/drivers/net/ethernet/faraday/ftmac100.c
> > >> @@ -1172,11 +1172,17 @@ static int __exit ftmac100_remove(struct platform_device *pdev)
> > >>       return 0;
> > >>  }
> > >>
> > >> +static const struct of_device_id mac_of_ids[] = {
> > >> +     { .compatible = "andestech,atmac100" },
> > >> +     { }
> > >
> > > andestech is not in
> > > Documentation/devicetree/bindings/vendor-prefixes.txt Please provide a
> > > separate patch adding it.
> > OK. I will provide another patch to add andestech.
> > 
> > > Humm, why andestech? Why not something based around faraday
> > > technology?
> > It is because we use the same ftmac100 IP provided from faraday
> > technology but I am now using it in andestech SoC.
> 
> Please make sure you get an acked-by: from the device tree
> maintainers. They might want you to use faraday, since that is the
> original IP provider. For example, all Synopsys licensed IP uses
> "snps,XXX", not the SoC vendor with the license.

I think ideally we have both the ID from andes and from faraday here.

Note that we already have "moxa,moxart-mac" as a compatible string
for this hardware, though it uses a different driver.

We should probably have a single binding document describing
both compatible strings and any optional properties.

	Arnd