linux-kernel - RE: [PATCH v2 2/2] phy: rcar-gen3-usb2: add fallback binding

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Date:	Thu, 3 Mar 2016 09:23:22 +0000
From:	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:	Simon Horman <horms+renesas@...ge.net.au>
CC:	Kishon Vijay Abraham I <kishon@...com>,
	Magnus Damm <magnus.damm@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-renesas-soc@...r.kernel.org" 
	<linux-renesas-soc@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: RE: [PATCH v2 2/2] phy: rcar-gen3-usb2: add fallback binding

Hi Simon-san,

> Sent: Thursday, March 03, 2016 5:13 PM
> 
> On Thu, Mar 3, 2016 at 1:38 AM, Simon Horman <horms+renesas@...ge.net.au> 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 its 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 being adopted for
> > drivers for Renesas SoCs.
> >
> > Signed-off-by: Simon Horman <horms+renesas@...ge.net.au>
> 
> Acked-by: Geert Uytterhoeven <geert+renesas@...der.be>

Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>

Best regards,
Yoshihiro Shimoda