From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2B67C46469 for ; Wed, 12 Sep 2018 13:25:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9024F206B6 for ; Wed, 12 Sep 2018 13:25:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9024F206B6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-sky.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728082AbeILSaG (ORCPT ); Wed, 12 Sep 2018 14:30:06 -0400 Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:45960 "EHLO smtp2200-217.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727790AbeILSaF (ORCPT ); Wed, 12 Sep 2018 14:30:05 -0400 X-Alimail-AntiSpam: AC=CONTINUE;BC=0.08221229|-1;CH=green;FP=0|0|0|0|0|-1|-1|-1;HT=e01e01546;MF=ren_guo@c-sky.com;NM=1;PH=DS;RN=15;RT=15;SR=0;TI=SMTPD_---.CpvjkjF_1536758716; Received: from localhost(mailfrom:ren_guo@c-sky.com fp:SMTPD_---.CpvjkjF_1536758716) by smtp.aliyun-inc.com(10.147.44.145); Wed, 12 Sep 2018 21:25:16 +0800 From: Guo Ren To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, daniel.lezcano@linaro.org, jason@lakedaemon.net, arnd@arndb.de, devicetree@vger.kernel.org, andrea.parri@amarulasolutions.com, peterz@infradead.org Cc: c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com, thomas.petazzoni@bootlin.com, wbx@uclibc-ng.org, ren_guo@c-sky.com, green.hu@gmail.com Subject: [PATCH V3 18/27] dt-bindings: csky CPU Bindings Date: Wed, 12 Sep 2018 21:24:52 +0800 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Guo Ren --- Documentation/devicetree/bindings/csky/cpus.txt | 70 +++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 Documentation/devicetree/bindings/csky/cpus.txt diff --git a/Documentation/devicetree/bindings/csky/cpus.txt b/Documentation/devicetree/bindings/csky/cpus.txt new file mode 100644 index 0000000..ee3901d --- /dev/null +++ b/Documentation/devicetree/bindings/csky/cpus.txt @@ -0,0 +1,70 @@ +================== +C-SKY CPU Bindings +================== + +The device tree allows to describe the layout of CPUs in a system through +the "cpus" node, which in turn contains a number of subnodes (ie "cpu") +defining properties for every cpu. + +Only SMP system need to care about the cpus node and single processor +needn't define cpus node at all. + +===================================== +cpus and cpu node bindings definition +===================================== + +- cpus node + + Description: Container of cpu nodes + + The node name must be "cpus". + + A cpus node must define the following properties: + + - #address-cells + Usage: required + Value type: + Definition: must be set to 1 + - #size-cells + Usage: required + Value type: + Definition: must be set to 0 + +- cpu node + + Description: Describes one of SMP cores + + PROPERTIES + + - device_type + Usage: required + Value type: + Definition: must be "cpu" + - reg + Usage: required + Value type: + Definition: CPU index + - status: + Usage: required + Value type: + Definition: "ok" means enable the cpu-core + "disabled" means disable the cpu-core + +Example: +-------- + + cpus { + #address-cells = <1>; + #size-cells = <0>; + cpu@0 { + device_type = "cpu"; + reg = <0>; + status = "ok"; + }; + + cpu@1 { + device_type = "cpu"; + reg = <1>; + status = "ok"; + }; + }; -- 2.7.4