Hi Chris,

On Wed, Jul 5, 2017 at 3:51 PM, Chris Paterson
<[email protected]> wrote:
>> From: [email protected]
>> [mailto:[email protected]] On Behalf Of Geert Uytterhoeven
>> Sent: 05 July 2017 14:47
>> On Wed, Jul 5, 2017 at 3:01 PM, Biju Das <[email protected]> wrote:
>> > Add support for Gigabit Ethernet E-MAC on r8a7743 (RZ/G1M) SoC.
>> > Renesas RZ/G1M (R8A7743) SoC Ethernet AVB IP is identical to the R-Car
>> > Gen2 family.
>> >
>> > Signed-off-by: Biju Das <[email protected]>
>> > Reviewed-by: Chris Paterson <[email protected]>
>>
>> Thanks for your patch!
>>
>> > --- a/drivers/net/ethernet/renesas/ravb_main.c
>> > +++ b/drivers/net/ethernet/renesas/ravb_main.c
>> > @@ -1869,6 +1869,7 @@ static int ravb_mdio_release(struct ravb_private
>> > *priv)  }
>> >
>> >  static const struct of_device_id ravb_match_table[] = {
>> > +       { .compatible = "renesas,etheravb-r8a7743", .data = (void
>> > + *)RCAR_GEN2 },
>> >         { .compatible = "renesas,etheravb-r8a7790", .data = (void
>> *)RCAR_GEN2 },
>> >         { .compatible = "renesas,etheravb-r8a7794", .data = (void
>> *)RCAR_GEN2 },
>> >         { .compatible = "renesas,etheravb-rcar-gen2", .data = (void
>> > *)RCAR_GEN2 },
>>
>> As Sergei already mentioned, a driver update is not needed due to the
>> presence of family-specific compatible values.
>> Please drop that part, and you can add my:
>> Reviewed-by: Geert Uytterhoeven <[email protected]>
>
> Should the other compatible values (r8a7790, 94 etc) be removed then? Or are 
> they needed for backwards compatibility?

The other compatible values in DT bindings and DTS files should be kept,
to allow handling of SoC-specific quirks if/when they are ever detected.

The other compatible values in the driver should be kept for
backwards-compatibility with old DTB files that lack the (newer)
family-specific compatible values.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]

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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