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Date: Tue, 24 Apr 2018 11:12:18 +0200
From: Simon Horman <horms@verge.net.au>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>,
        Magnus Damm <magnus.damm@gmail.com>,
        Linux-Renesas <linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH 0/3] arm64: dts: renesas: Rename EtherAVB "mdc" pin group
 to "mdio"
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On Wed, Apr 18, 2018 at 03:47:33PM +0200, Geert Uytterhoeven wrote:
> Hi Simon,
> 
> On Fri, Mar 16, 2018 at 9:39 AM, Simon Horman <horms@verge.net.au> wrote:
> > On Tue, Mar 13, 2018 at 08:23:05PM +0100, Geert Uytterhoeven wrote:
> >> On Tue, Mar 13, 2018 at 7:49 PM, Simon Horman <horms@verge.net.au> wrote:
> >> > On Mon, Mar 12, 2018 at 04:11:57PM +0100, Geert Uytterhoeven wrote:
> >> >> On Renesas R-Car Gen2 SoCs, the pin group for the MDIO bus is named
> >> >> "mdio".
> >> >>
> >> >> When initial support was added for R-Car H3, the MDIO pin was forgotten,
> >> >> and the MDC pin got its own group named "mdc".  During the addition of
> >> >> support for R-Car M3-W, this mistake was noticed.  But as R-Car H3 and
> >> >> M3-W are pin compatible, and can be mounted on the same boards, the
> >> >> decision was made to just add the MDIO pin to the existing "mdc" group.
> >> >> Later this was extended to R-Car H3 ES2.0, and M3-N, because of pin
> >> >> compatibility, and to R-Car D3, in the name of consistency among R-Car
> >> >> Gen3 SoCs.
> >> >>
> >> >> However, this decision keeps on being questioned when adding new SoC
> >> >> support.  Hence bite the bullet and admit our mistake, and rename the
> >> >> pin group from "mdc" to "mdio", like on R-Car Gen2 SoCs.
> >> >>
> >> >> This series is the DTS part, and depends on the series '[PATCH 0/6]
> >> >> pinctrl: sh-pfc: rcar-gen3: Rename EtherAVB "mdc" pin group to "mdio"'.
> >> >
> >> > could you comment on the forwards/backwards compatibility considerations
> >> > of this series?
> >>
> >> Old and new kernels work with old DT (tested on Salvator-X(S).
> >> New DT requires a new kernel, hence the dependency of the DTS part on the
> >> driver part.
> >
> > Thanks, that is fine by me.
> >
> > I have marked these patches as deferred. Please repost or ping me
> > once the dependency is available in an RC release.
> 
> Now in v4.17-rc1.

Thanks, applied.