From patchwork Fri Oct 2 17:54:20 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 7318141 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 62561BEEA4 for ; Fri, 2 Oct 2015 17:57:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A8B3320873 for ; Fri, 2 Oct 2015 17:57:25 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C9D1A2081C for ; Fri, 2 Oct 2015 17:57:24 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zi4YM-0005oY-4i; Fri, 02 Oct 2015 17:55:30 +0000 Received: from mail-gw1-out.broadcom.com ([216.31.210.62]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Zi4YD-0004nM-Az for linux-arm-kernel@lists.infradead.org; Fri, 02 Oct 2015 17:55:22 +0000 X-IronPort-AV: E=Sophos;i="5.17,624,1437462000"; d="scan'208";a="76710001" Received: from irvexchcas08.broadcom.com (HELO IRVEXCHCAS08.corp.ad.broadcom.com) ([10.9.208.57]) by mail-gw1-out.broadcom.com with ESMTP; 02 Oct 2015 12:42:04 -0700 Received: from IRVEXCHSMTP1.corp.ad.broadcom.com (10.9.207.51) by IRVEXCHCAS08.corp.ad.broadcom.com (10.9.208.57) with Microsoft SMTP Server (TLS) id 14.3.235.1; Fri, 2 Oct 2015 10:55:03 -0700 Received: from mail-irva-13.broadcom.com (10.10.10.20) by IRVEXCHSMTP1.corp.ad.broadcom.com (10.9.207.51) with Microsoft SMTP Server id 14.3.235.1; Fri, 2 Oct 2015 10:55:02 -0700 Received: from anup-HP-Compaq-8100-Elite-CMT-PC.ban.broadcom.com (unknown [10.131.91.107]) by mail-irva-13.broadcom.com (Postfix) with ESMTP id 9E20C40FEE; Fri, 2 Oct 2015 10:52:08 -0700 (PDT) From: Anup Patel To: Subject: [PATCH 3/6] arm64: dts: Add syscon based reboot in DT for NS2 Date: Fri, 2 Oct 2015 23:24:20 +0530 Message-ID: <1443808463-21120-4-git-send-email-anup.patel@broadcom.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1443808463-21120-1-git-send-email-anup.patel@broadcom.com> References: <1443808463-21120-1-git-send-email-anup.patel@broadcom.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151002_105521_449091_305C2F45 X-CRM114-Status: UNSURE ( 9.43 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -4.2 (----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Florian Fainelli , Scott Branden , Pawel Moll , Ian Campbell , Catalin Marinas , Will Deacon , linux-kernel@vger.kernel.org, Ray Jui , Vikram Prakash , Rob Herring , bcm-kernel-feedback-list@broadcom.com, Kumar Gala , Pramod KUMAR , Anup Patel Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To reset NS2, we simply have to write '0' to BIT[1] at offset 0x90 of CRMU space. The above can be easily achieved by writing 0xfffffffd at offset 0x90 using syscon-reboot driver. We don't need to have separate driver for rebooting NS2. This patch enables syscon-reboot driver for NS2 using DT. Signed-off-by: Anup Patel Reviewed-by: Ray Jui Reviewed-by: Scott Branden --- arch/arm64/boot/dts/broadcom/ns2.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm64/boot/dts/broadcom/ns2.dtsi b/arch/arm64/boot/dts/broadcom/ns2.dtsi index c5d90e4..5d2ac6b 100644 --- a/arch/arm64/boot/dts/broadcom/ns2.dtsi +++ b/arch/arm64/boot/dts/broadcom/ns2.dtsi @@ -144,6 +144,18 @@ mmu-masters; }; + crmu: crmu@65024000 { + compatible = "syscon"; + reg = <0x65024000 0x100>; + }; + + reboot@65024000 { + compatible ="syscon-reboot"; + regmap = <&crmu>; + offset = <0x90>; + mask = <0xfffffffd>; + }; + gic: interrupt-controller@65210000 { compatible = "arm,gic-400"; #interrupt-cells = <3>;