Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755893Ab3GQOKa (ORCPT ); Wed, 17 Jul 2013 10:10:30 -0400 Received: from service87.mimecast.com ([91.220.42.44]:55215 "EHLO service87.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755303Ab3GQOGi (ORCPT ); Wed, 17 Jul 2013 10:06:38 -0400 From: Sudeep.KarkadaNagesha@arm.com To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, devicetree-discuss@lists.ozlabs.org Cc: Russell King , Shawn Guo , Gregory Clement , Greg Kroah-Hartman , Viresh Kumar , "Rafael J. Wysocki" , Grant Likely , Rob Herring , Lorenzo Pieralisi , Olof Johansson , Arnd Bergmann , Sudeep KarkadaNagesha Subject: [RFC PATCH v2 00/15] DT/core: update cpu device of_node Date: Wed, 17 Jul 2013 15:06:09 +0100 Message-Id: <1374069984-20567-1-git-send-email-Sudeep.KarkadaNagesha@arm.com> X-Mailer: git-send-email 1.8.1.2 X-OriginalArrivalTime: 17 Jul 2013 14:06:32.0462 (UTC) FILETIME=[D73762E0:01CE82F6] X-MC-Unique: 113071715063513401 Content-Type: text/plain; charset=WINDOWS-1252 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.home.local id r6HEArES026394 Content-Length: 3707 Lines: 75 From: Sudeep KarkadaNagesha As more and more information is getting added into the cpu node, the number of drivers needing to parse the device tree for CPU nodes are increasing. Most of the time, the information needed from the cpu node is preferred in the logical CPU order. Hence many drivers first parse and search the CPU node, match them to logical index if needed and then search for the required property inside a particular cpu node. Some of them assume the logical and physical CPU ordering to be same which is incorrect. This patch series initialises the of_node in all the cpu devices when registering the CPU device. 1. This avoids different drivers having to parse the cpu nodes to obtain different attributes like operating points, latency,...etc. 2. This handles different physical and logical cpu ordering which is not the case in current code. 3. Also all the cpu nodes will have their of_node initialised correctly. Currently different drivers assign them partially and incorrectly. 4. Removes all the reduntant parsing in various drivers. Changes v1->v2: 1. Moved most of arch_of_get_cpu_node to OF/DT core as of_get_cpu_node adding a provision for architecture specific hooks for matching logical and physical ids. 2. Extended removal of DT cpu node parsing to PPC cpufreq drivers 3. Added Acks from Viresh and Shawn Regards, Sudeep Sudeep KarkadaNagesha (15): of: add support for retrieving cpu node for a given logical cpu index driver/core: cpu: initialize of_node in cpu's device struture ARM: DT/kernel: define ARM specific arch_match_cpu_phys_id ARM: topology: remove hwid/MPIDR dependency from cpu_capacity ARM: mvebu: remove device tree parsing for cpu nodes drivers/bus: arm-cci: avoid parsing DT for cpu device nodes cpufreq: imx6q-cpufreq: remove device tree parsing for cpu nodes cpufreq: cpufreq-cpu0: remove device tree parsing for cpu nodes cpufreq: highbank-cpufreq: remove device tree parsing for cpu nodes cpufreq: spear-cpufreq: remove device tree parsing for cpu nodes cpufreq: kirkwood-cpufreq: remove device tree parsing for cpu nodes cpufreq: arm_big_little: remove device tree parsing for cpu nodes cpufreq: maple-cpufreq: remove device tree parsing for cpu nodes cpufreq: pmac64-cpufreq: remove device tree parsing for cpu nodes cpufreq: pmac32-cpufreq: remove device tree parsing for cpu nodes arch/arm/kernel/devtree.c | 5 +++ arch/arm/kernel/topology.c | 61 +++++++++++----------------------- arch/arm/mach-imx/mach-imx6q.c | 3 +- arch/arm/mach-mvebu/platsmp.c | 52 ++++++++++++++--------------- drivers/base/cpu.c | 2 ++ drivers/bus/arm-cci.c | 28 ++++------------ drivers/cpufreq/arm_big_little_dt.c | 39 ++++++++++------------ drivers/cpufreq/cpufreq-cpu0.c | 23 +++---------- drivers/cpufreq/highbank-cpufreq.c | 18 ++++------ drivers/cpufreq/imx6q-cpufreq.c | 4 +-- drivers/cpufreq/kirkwood-cpufreq.c | 14 ++++++-- drivers/cpufreq/maple-cpufreq.c | 23 ++++--------- drivers/cpufreq/pmac32-cpufreq.c | 11 ++++++- drivers/cpufreq/pmac64-cpufreq.c | 54 ++++++++++-------------------- drivers/cpufreq/spear-cpufreq.c | 10 +++++- drivers/of/base.c | 66 +++++++++++++++++++++++++++++++++++++ include/linux/of.h | 5 +++ 17 files changed, 213 insertions(+), 205 deletions(-) -- 1.8.1.2 -- 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/