From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751899AbbEQTA4 (ORCPT ); Sun, 17 May 2015 15:00:56 -0400 Received: from down.free-electrons.com ([37.187.137.238]:38329 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751306AbbEQTAP (ORCPT ); Sun, 17 May 2015 15:00:15 -0400 Date: Sun, 17 May 2015 16:38:16 +0200 From: Maxime Ripard To: Ian Campbell Cc: wens@csie.org, Nicolas Pitre , Dave Martin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com Subject: Re: [linux-sunxi] [RFC 0/7] ARM: sun9i: SMP support with Multi-Cluster Power Management Message-ID: <20150517143816.GJ4004@lukather> References: <1431583811-25780-1-git-send-email-wens@csie.org> <1431770926.5748.41.camel@hellion.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="8BaRf9C5c8wiXWYy" Content-Disposition: inline In-Reply-To: <1431770926.5748.41.camel@hellion.org.uk> 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 --8BaRf9C5c8wiXWYy Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Ian, On Sat, May 16, 2015 at 11:08:46AM +0100, Ian Campbell wrote: > On Thu, 2015-05-14 at 14:10 +0800, Chen-Yu Tsai wrote: > > This is my attempt to support SMP and CPU hot plugging on the Allwinner > > A80 SoC. The A80 is a big.Little processor with 2 clusters of 4x Cortex= -A7 > > and 4x Cortex-A15 cores. >=20 > I thought there was a preference these days to support this sort of > thing via support PSCI in the firmware, which allows for other things > such as non-secure-world etc. Yes, it is the preferred way. Meaning that if someone wants to do that work, he's very much welcome and encouraged to do so. But if no one's doing it, then we still have to have a way to bringup the secondary CPUs. Maxime --=20 Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com --8BaRf9C5c8wiXWYy Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVWKfYAAoJEBx+YmzsjxAgdaQP/2rrvVSxoE1k0C8OxHulmkAq 7qlFOXyz+7PKJldmopR5jhUZ/1ctHAR0MGSV0rv682+1qrBre3Qtsil+JzsV8257 T80IHeHwkeT4Xg2RJp3sW+LJaPoljcfJOI8KgWltlLM+9xRtojQQvmqE27g+LvK5 Fu7oF/DfT31aPgXGhatEBcjo5Nf/brbA+JOxVK5cVvSVoyY7M5HdXEW+qNNN2wUO asxvjmfKkB0wAOnmOByvdWLKECKdu22jcNSDvyq/1fgpZEwCU5xnlEBnS0Q2R8zq FTuN0sRsObpwzdAWU5skklZWXhdSaED76TB0ueBTHZT3ycgB9Uyh7Pi+/2mK+PzA nDAcOc7MSjS+p0lf3cF5QMWIfxob/FNZkzIZgZJx4rLNs7zqTZ36n27bhRYrpMjv RAR+LNpwSl/z0AmSiIeVx3urn1sg0lG6yJd19ZjxbvBWnborXqC98gZ2Q2IQRrEd ZWnEPuT7bOoKwAfF/p+/M9wqFdGSh1ETgeuJO2WvzwqXBrUrzpDRewQeG2LZw1M/ 2FiN2EZMmgd6sePLAZ6QHGd1OnHBRvSs2PUVikadQ+sGMOiCnEmi+IF7djnDaXWw 3GO7ICzNh7UQzAw/HpbXdCZhxMRwYVvzYkxDkzPXZH7w/wGJKhr9xxCzVZGXW65w 7X6c38zQWs60VV6tOuw+ =23Fq -----END PGP SIGNATURE----- --8BaRf9C5c8wiXWYy--