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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,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 2AAA9C43141 for ; Thu, 21 Jun 2018 19:39:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA63C21C67 for ; Thu, 21 Jun 2018 19:39:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DA63C21C67 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.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 S933115AbeFUTj4 (ORCPT ); Thu, 21 Jun 2018 15:39:56 -0400 Received: from mga07.intel.com ([134.134.136.100]:50567 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932686AbeFUTjz (ORCPT ); Thu, 21 Jun 2018 15:39:55 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Jun 2018 12:39:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,253,1526367600"; d="scan'208";a="59887863" Received: from maru.jf.intel.com ([10.54.51.80]) by fmsmga002.fm.intel.com with ESMTP; 21 Jun 2018 12:39:54 -0700 From: Jae Hyun Yoo To: Rob Herring , Mark Rutland , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org Cc: Jae Hyun Yoo , Andrew Jeffery , Joel Stanley Subject: [PATCH linux-next v6 01/13] dt-bindings: Add a document of PECI subsystem Date: Thu, 21 Jun 2018 12:39:47 -0700 Message-Id: <20180621193947.20645-1-jae.hyun.yoo@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180621193721.20588-1-jae.hyun.yoo@linux.intel.com> References: <20180621193721.20588-1-jae.hyun.yoo@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This commit adds a document of generic PECI bus, adapter and client driver. Signed-off-by: Jae Hyun Yoo Reviewed-by: Haiyue Wang Reviewed-by: James Feist Reviewed-by: Vernon Mauery Cc: Andrew Jeffery Cc: Joel Stanley --- .../devicetree/bindings/peci/peci.txt | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/peci/peci.txt diff --git a/Documentation/devicetree/bindings/peci/peci.txt b/Documentation/devicetree/bindings/peci/peci.txt new file mode 100644 index 000000000000..5583aa80b78a --- /dev/null +++ b/Documentation/devicetree/bindings/peci/peci.txt @@ -0,0 +1,60 @@ +Generic device tree configuration for PECI buses +================================================ + +Required properties: +- compatible : Should be "simple-bus". +- #address-cells : Should be present if the device has sub-nodes. +- #size-cells : Should be present if the device has sub-nodes. +- ranges : Should contain PECI controller registers ranges. + +Example: + peci: peci@10000000 { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x10000000 0x1000>; + }; + +Generic device tree configuration for PECI adapters +=================================================== + +Required properties: +- #address-cells : Should be <1>. Read more about client addresses below. +- #size-cells : Should be <0>. Read more about client addresses below. + +The cells properties above define that an address of CPU clients of a PECI bus +are described by a single value. + +Example: + peci0: peci-bus@0 { + compatible = "vendor,soc-peci"; + reg = <0x0 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + }; + +Generic device tree configuration for PECI clients +================================================== + +Required properties: +- compatible : Should contain name of PECI client. +- reg : Should contain address of a client CPU. Address range of CPU + clients starts from 0x30 based on PECI specification. + +Example: + peci-bus@0 { + compatible = "vendor,soc-peci"; + reg = <0x0 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + + peci-client@30 { + compatible = "vendor,peci-client"; + reg = <0x30>; + }; + + peci-client@31 { + compatible = "vendor,peci-client"; + reg = <0x31>; + }; + }; -- 2.17.1