From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030330AbbCMMHI (ORCPT ); Fri, 13 Mar 2015 08:07:08 -0400 Received: from foss.arm.com ([217.140.101.70]:51483 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030303AbbCMMHF (ORCPT ); Fri, 13 Mar 2015 08:07:05 -0400 Date: Fri, 13 Mar 2015 12:07:00 +0000 From: Catalin Marinas To: Mark Rutland Cc: Kumar Gala , "devicetree@vger.kernel.org" , "heiko@sntech.de" , "linux-arm-msm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "arm@kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [PATCH v3 2/4] arm64: dts: Add Qualcomm MSM8916 SoC and evaluation board dts Message-ID: <20150313120659.GE30671@e104818-lin.cambridge.arm.com> References: <1426107080-29079-1-git-send-email-galak@codeaurora.org> <1426107080-29079-2-git-send-email-galak@codeaurora.org> <20150312170541.GE30145@leverpostej> <20150312182508.GF30145@leverpostej> <20150313103453.GA3592@leverpostej> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150313103453.GA3592@leverpostej> 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 On Fri, Mar 13, 2015 at 10:34:54AM +0000, Mark Rutland wrote: > > > Which of spin-table/psci are you planning on using for SMP support, and > > > when would that be likely to appear? > > > > We have a qcom specific SMP enablement method for this device. This > > was one of our first devices so it utilized as much from arm 32-bit as > > possible. > > Implementation specific enable methods are something we really don't > want to see for arm64. I fully agree (and we've been stating this for over two years). > If PSCI is out of the question then a spin-table shim in your > bootloader shouldn't be too hard to implement. And I guess only WFI cpuidle supported in Linux. -- Catalin