From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Subject: Re: [PATCH v4 2/3] dt-bindings: mmc: renesas_sdhi: add R-Car Gen[123] fallback compatibility strings Date: Wed, 18 Oct 2017 09:24:56 +0200 Message-ID: <20171018072456.tp3vdcuvkxpu7yd4@ninjato> References: <20171018070023.3878-1-horms+renesas@verge.net.au> <20171018070023.3878-3-horms+renesas@verge.net.au> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="jfajk7u4fn52bx2k" Return-path: Received: from sauhun.de ([88.99.104.3]:56114 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752387AbdJRHY6 (ORCPT ); Wed, 18 Oct 2017 03:24:58 -0400 Content-Disposition: inline In-Reply-To: <20171018070023.3878-3-horms+renesas@verge.net.au> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Simon Horman Cc: Wolfram Sang , Ulf Hansson , Magnus Damm , linux-mmc@vger.kernel.org, linux-renesas-soc@vger.kernel.org --jfajk7u4fn52bx2k Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Oct 18, 2017 at 09:00:22AM +0200, Simon Horman wrote: > Add fallback compatibility strings for R-Car Gen 1, 2 and 3. >=20 > In the case of Renesas R-Car hardware we know that there are generations = of > SoCs, f.e. Gen 1 and 2. But beyond that its not clear what the relationsh= ip > 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. >=20 > We can, however, by examining the documentation and behaviour of the > hardware at run-time observe that the current driver implementation appea= rs > to be compatible with the IP blocks on SoCs within a given generation. >=20 > 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. >=20 > Signed-off-by: Simon Horman > Reviewed-by: Geert Uytterhoeven Acked-by: Wolfram Sang --jfajk7u4fn52bx2k Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAlnnAcgACgkQFA3kzBSg KbYNYA//YKLWhob2dqpFBNEKYSF+Wu8k4qnBM7eQRcyRMd9VXtWoAY0z5dvCVLp5 FlQWXohKTNJMLVj8fYP21hT80hndGTdqLspTcFeV4TM5cnZKNwjfz3Wxx8eUxK/2 EB2leHzp7iQTh79bd7pbo7HyTRVInSREHRYX4VdTpkw/dcBI+MmSa4IwiSxcuIae XRuX1Behy4h9/jqwWFNdEJaR7UokBzP7N1ik7gGXr0sF7J8AGc35tp1NMI17cMcs Wfmw96hOTYhbphDPpHLiXm1yWKu2q8Xwnnn2JhKcKbFIK10L1XBzYyvhfhD2DXxQ RJNnb/v8DS78y+eChIxplQJ/5vpj21t4wI7gtsdA/t+zgtPMqFVkaCFxxZwddxMK Ogu4R8YYC/sz8KYLEA65G7EbNdMHNERGHXw7Nxb6Fs0bYeM5owtKn85SO5EKJLYr jjs16yHmtAAw9D7iXMt7szB3mQOAEImgj+PvhxV71KRFtwYGUkeBYoAN7xKeX7HN nGsHIPs4looLULPRPPphkVQYtyCT2gG8e/uJ5kf5IaXIu07ASoKJ9tpCONnNo41A fAHoOluZPB2RP307xJ+TF37Qc7Kw9h1Bv3PLkMeUnQEP5r71sC+rTkdWoDKMfKlO pzfMVbTQJ6paixTR/Ixc/GIFj7lEBWEA7fchIHnHd0wb3s1g6Rk= =nr0U -----END PGP SIGNATURE----- --jfajk7u4fn52bx2k--