From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Chubb Subject: Re: [PATCHv3] ARM: dts: add exynos5422-cpus.dtsi to correct cpu order Date: Tue, 2 Jun 2015 13:29:35 +1000 Message-ID: <84k2vmwzxc.wl-peter.chubb@nicta.com.au> References: <1433161459-10901-1-git-send-email-chanho61.park@samsung.com> Mime-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset="US-ASCII" Return-path: Received: from crl-mxout1.it.nicta.com.au ([221.199.218.17]:54213 "EHLO crl-mxout1.it.nicta.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754760AbbFBD3t (ORCPT ); Mon, 1 Jun 2015 23:29:49 -0400 In-Reply-To: <1433161459-10901-1-git-send-email-chanho61.park@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Chanho Park Cc: kgene@kernel.org, k.kozlowski@samsung.com, jy0922.shim@samsung.com, cw00.choi@samsung.com, linux-samsung-soc@vger.kernel.org, javier.martinez@collabora.co.uk, khilman@linaro.org, sjoerd.simons@collabora.co.uk, heesub.shin@samsung.com, m.szyprowski@samsung.com, b.zolnierkie@samsung.com, Chanho Park >>>>> "Chanho" == Chanho Park writes: Chanho> The odroid-xu3 board which is based on exynos5422 not Chanho> exynos5800 is booted from cortex-a7 core unlike Chanho> exynos5800. The odroid-xu3's cpu order is quite strange. cpu0 Chanho> and cpu5-7 are cortex-a7 cores and cpu1-4 are cortex-a15 Chanho> cores. To correct this mis-odering, I added exynos5422.dtsi Chanho> and reversing cpu orders from exynos5420. Now, cpu0-3 are Chanho> cortex-a7 and cpu4-7 are cortex-a15. Does this patch make any difference? CPUs are numbered in the kernel in the order they're enumerated; with this patch or using the old dts I see the CPUs numbered the same after boot. And only 5 of the 8 come up: processor 0 is an A7; processors 1 through 4 are A15. Peter C -- Dr Peter Chubb peter.chubb AT nicta.com.au http://www.ssrg.nicta.com.au Software Systems Research Group/NICTA