Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757830AbaDXOsf (ORCPT ); Thu, 24 Apr 2014 10:48:35 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:43273 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757419AbaDXOsd (ORCPT ); Thu, 24 Apr 2014 10:48:33 -0400 Date: Thu, 24 Apr 2014 09:48:22 -0500 From: Felipe Balbi To: Balaji T K CC: , , , , Linux OMAP Mailing List , Linux Kernel Mailing List Subject: Re: [PATCH 0/5] mmc: host: omap_hsmmc: a few improvements Message-ID: <20140424144822.GJ26661@saruman.home> Reply-To: References: <1395878690-9650-1-git-send-email-balbi@ti.com> <53592037.8050106@ti.com> <20140424143931.GE26661@saruman.home> <53592304.3070105@ti.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="KjX7LgAomYr70Ka9" Content-Disposition: inline In-Reply-To: <53592304.3070105@ti.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --KjX7LgAomYr70Ka9 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Apr 24, 2014 at 08:13:16PM +0530, Balaji T K wrote: > On Thursday 24 April 2014 08:09 PM, Felipe Balbi wrote: > >On Thu, Apr 24, 2014 at 08:01:19PM +0530, Balaji T K wrote: > >>On Thursday 27 March 2014 05:34 AM, Felipe Balbi wrote: > >>>Hi, > >>> > >>>this series lets us access the newer registers introduced > >>>back in OMAP4 which give us some valid information about > >>>the OMAP HSMMC IP like max block size, support for ADMA, > >>>support for Retention. > >> > >>"Support for Retention" looks interesting, can you shed more lights on > >>it > > > >HWINFO has a bit (bit 6) which tells you whether retention is supported, > >it's in all TRMs since OMAP3630 or so. > > > >"6 RERETMODE Retention mode generic parameter > > This bit field indicates whether the > > retention mode is supported using the > > pin PIRFFRET. > > > > 0x0: Retention mode disabled > > 0x1: Retention mode enabled" > > >=20 > I have seen that but just wondering how the driver can make use of it > :-) oh, perhaps you can use to conditionally save context. The difficulty is knowing if we're going to RET or OFF, but that could be extrapolated =66rom pm_qos, perhaps ?!? just a thought. --=20 balbi --KjX7LgAomYr70Ka9 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJTWSQ2AAoJEIaOsuA1yqREisMP/18DgeQ2YsZhdnUQN26MpyKT FtyEVUpna9AbJ5lhwAcQ8XRqsjikxXZqXgY2zOJ6d78zjSQmkKBTslxXH7kXEpj0 2/THK1NdsIE1is7E/dM92nSXlwAbGCTbcWopr1tSAiO4QL+Ipek3lqtDDkX/uvup 0BThWNEGtk5Kd8Au5JP6Nk1rl6fT+t7TQ8CQ6arKcOLCbnC2BKHgmguQGifJJeaT BdajhfIwYwW0mawKILd0lXsvzC21Gu8rT9XKGNea3Wx3+GeYvWoNDUWRCGdLQIDh ZY6/650dBLL9+x9TIZubNbG0OSjSa5ShKESq4aunVFroSugIScZKshpEptI5ZSKS oSX3Z4xT+tGxMb3w1Z8+LrFqf6QxbimRvsQgXmQI90G4tZY9PjocyALJD/ugeSmz EEdqPJn2i/bU1NIoDfBeNiUNeRzGrGj9IKCBjIeQwIe7wTeOnMi7QLIZ7LrwFHWE M4ovAFK16Hb3OtrNbE11EOlBs+MYZX22/afR1Ip5Gg+hEQ+ANJVPqcABRcGxfUDU s4LFs/DyAD6lN2yN0WQYXo2xi0DyshV6qpvAonmaCfUO3ae4Mvi42cWjXTmXkrge G2HEEqFPGRxl3aEW+2ucXB4gpn8bf/KPjwo4dCcoqG7U098HWCJGu6WGTKklM8cm s4s8gHaKADG5Lk/3noFD =EC27 -----END PGP SIGNATURE----- --KjX7LgAomYr70Ka9-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/