Re: [PATCH spi/for-next] spi: sh-msiof: Add R-Car Gen 2 and 3 fallback bindings

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

On Mon, Dec 12, 2016 at 10:49 AM, Simon Horman
<horms+renesas@xxxxxxxxxxxx> wrote:
> In the case of Renesas R-Car hardware we know that there are generations of
> SoCs, e.g. Gen 2 and Gen 3. But beyond that it's not clear what the
> relationship between IP blocks might be. For example, I believe that
> r8a7790 is older than r8a7791 but that doesn't imply that the latter is a
> descendant of the former or vice versa.
>
> We can, however, by examining the documentation and behaviour of the
> hardware at run-time observe that the current driver implementation appears
> to be compatible with the IP blocks on SoCs within a given generation.
>
> For the above reasons and convenience when enabling new SoCs a
> per-generation fallback compatibility string scheme is being adopted for
> drivers for Renesas SoCs.
>
> Also:
> * Deprecate renesas,sh-msiof. It seems poorly named as it is only
>   compatible with SH-Mobile. It also appears unused in mainline.
>
> Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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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