From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
To: Simon Horman <horms+renesas@verge.net.au>
CC: Kishon Vijay Abraham I <kishon@ti.com>,
        Magnus Damm <magnus.damm@gmail.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-renesas-soc@vger.kernel.org" 
	<linux-renesas-soc@vger.kernel.org>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        Geert Uytterhoeven <geert@linux-m68k.org>
Subject: RE: [PATCH v2 2/2] phy: rcar-gen3-usb2: add fallback binding
Thread-Topic: [PATCH v2 2/2] phy: rcar-gen3-usb2: add fallback binding
Thread-Index: AQHRdOUzZmsnWfzdAUuCbctigNaEDZ9HXz0AgAATXfA=
Date: Thu, 3 Mar 2016 09:23:22 +0000
Message-ID: <SG2PR06MB0919A78EC9E41C0188A4B119D8BD0@SG2PR06MB0919.apcprd06.prod.outlook.com>
References: <1456965518-13615-1-git-send-email-horms+renesas@verge.net.au>
	<1456965518-13615-3-git-send-email-horms+renesas@verge.net.au>
 <CAMuHMdW24p_nx19232LADRMHY8-976YX-S41zEGQhmoe+3_AxQ@mail.gmail.com>
In-Reply-To: <CAMuHMdW24p_nx19232LADRMHY8-976YX-S41zEGQhmoe+3_AxQ@mail.gmail.com>
Accept-Language: ja-JP, en-US
Content-Language: ja-JP
spamdiagnosticoutput: 1:23
spamdiagnosticmetadata: NSPM
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2016 09:23:22.4290
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 53d82571-da19-47e4-9cb4-625a166a4a2a
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SG2PR06MB0920
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id u239Nahq020850
Content-Length: 1118
Lines: 28

Hi Simon-san,

> Sent: Thursday, March 03, 2016 5:13 PM
> 
> On Thu, Mar 3, 2016 at 1:38 AM, Simon Horman <horms+renesas@verge.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@verge.net.au>
> 
> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>

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

Best regards,
Yoshihiro Shimoda