From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 13 Mar 2018 16:40:59 +0100 (CET) Received: from mail.linuxfoundation.org ([140.211.169.12]:50480 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23994656AbeCMPkbQcFsr (ORCPT ); Tue, 13 Mar 2018 16:40:31 +0100 Received: from localhost (LFbn-1-12258-90.w90-92.abo.wanadoo.fr [90.92.71.90]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id C9C0A10EC; Tue, 13 Mar 2018 15:40:24 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Paul Burton , Miodrag Dinic , Aleksandar Markovic , linux-mips@linux-mips.org, Ralf Baechle , James Hogan Subject: [PATCH 4.14 114/140] MIPS: CPC: Map registers using DT in mips_cpc_default_phys_base() Date: Tue, 13 Mar 2018 16:25:17 +0100 Message-Id: <20180313152505.846604094@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180313152458.201155692@linuxfoundation.org> References: <20180313152458.201155692@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 62962 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: gregkh@linuxfoundation.org Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Burton commit 791412dafbbfd860e78983d45cf71db603a82f67 upstream. Reading mips_cpc_base value from the DT allows each platform to define it according to its needs. This is especially convenient for MIPS_GENERIC kernel where this kind of information should be determined in runtime. Use mti,mips-cpc compatible string with just a reg property to specify the register location for your platform. Signed-off-by: Paul Burton Signed-off-by: Miodrag Dinic Signed-off-by: Aleksandar Markovic Cc: linux-mips@linux-mips.org Cc: Ralf Baechle Patchwork: https://patchwork.linux-mips.org/patch/18513/ Signed-off-by: James Hogan Signed-off-by: Greg Kroah-Hartman --- arch/mips/kernel/mips-cpc.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) --- a/arch/mips/kernel/mips-cpc.c +++ b/arch/mips/kernel/mips-cpc.c @@ -10,6 +10,8 @@ #include #include +#include +#include #include #include @@ -22,6 +24,17 @@ static DEFINE_PER_CPU_ALIGNED(unsigned l phys_addr_t __weak mips_cpc_default_phys_base(void) { + struct device_node *cpc_node; + struct resource res; + int err; + + cpc_node = of_find_compatible_node(of_root, NULL, "mti,mips-cpc"); + if (cpc_node) { + err = of_address_to_resource(cpc_node, 0, &res); + if (!err) + return res.start; + } + return 0; }