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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT 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 C2A0AC43381 for ; Fri, 15 Feb 2019 16:16:39 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 918ED222BE for ; Fri, 15 Feb 2019 16:16:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="fVatBY6w" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 918ED222BE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=atomide.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=S4FiEyZEp/O6thR6yggr1Fl2gIJnZI3GgSicTKBxADc=; b=fVatBY6wa+yuIQ mF6NA3A9R7uPco5M6qX0FbRCl869OMUoKHBStpgbsqKPgXH/CiblsBrdInd5h6BUTZcNkZ2ZCvNez cPbeK+rXrxu16zjbcwkGiqqNMPhbGoU0CXqQ+vnerVK18LOlN+vOSpWB9iXUSXHujHbI5pwiYwLLT LaZ1w4jhD+vjTzAtFfXlmuYkIBHh6EKZNFLayctQmRB4q2P/pCfG32AiByPnbEPTQlJ//cuDoylG/ K9RtSl6LFvIeS4CFCXB8E8oMpS4QAIa/mvv8ouivzEaO2p4V5/a72bZd5UlLHGSJUv192/WKBZD8C mmkG+PAgu6pyU+4MBr3g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gugAH-00044N-8c; Fri, 15 Feb 2019 16:16:37 +0000 Received: from muru.com ([72.249.23.125]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gugAE-00043g-5l for linux-arm-kernel@lists.infradead.org; Fri, 15 Feb 2019 16:16:35 +0000 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id E1EF580C0; Fri, 15 Feb 2019 16:16:42 +0000 (UTC) Date: Fri, 15 Feb 2019 08:16:29 -0800 From: Tony Lindgren To: Lokesh Vutla Subject: Re: [PATCH v5 05/10] dt-bindings: irqchip: Introduce TISCI Interrupt router bindings Message-ID: <20190215161629.GK5720@atomide.com> References: <20190212074237.2875-1-lokeshvutla@ti.com> <20190212074237.2875-6-lokeshvutla@ti.com> <20190212162247.GK5720@atomide.com> <6a274588-0fb6-2ddf-3bcc-f9e4d849ac07@ti.com> <20190213152620.GS5720@atomide.com> <4791de04-63af-4c5e-db9c-47634fcb8dc9@ti.com> <20190214154100.GB5720@atomide.com> <20190214174612.GF5720@atomide.com> <171e8597-2156-747d-d024-7b4bfc6f9186@ti.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <171e8597-2156-747d-d024-7b4bfc6f9186@ti.com> User-Agent: Mutt/1.11.2 (2019-01-07) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190215_081634_249766_D5682FE1 X-CRM114-Status: GOOD ( 10.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nishanth Menon , Device Tree Mailing List , jason@lakedaemon.net, Peter Ujfalusi , marc.zyngier@arm.com, Sekhar Nori , linux-kernel@vger.kernel.org, Tero Kristo , Rob Herring , Santosh Shilimkar , tglx@linutronix.de, Linux ARM Mailing List Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, * Lokesh Vutla [190214 18:03]: > On 2/14/2019 11:16 PM, Tony Lindgren wrote: > > But I'd rather have a proper hardware based phandle + index > > type mapping in the dts if possible though. > > The idea about sysfw here is that Linux is not aware of anything about > this device(Interrupt Router). It cannot even access any of its > registers. As a user Linux should know who is the parent to which the > Interrut router output should be configured. Then query sysfw about the > range of gic irqs allocated to it. Now for configuration, Linux should > pass the the input to interrupt router, gic irq no, and gic id(by which > sysfw uniquely identifies GIC interrupt controller with the SoC). Based > on these parameters Interrupt Router registers gets configured. If the interrupt router hardawre is hidden away from Linux, just leave it out of the device tree completely and have the interrupt controller driver request the routing. The dts node for the interrupt controller should describe a proper Linux device, that is with reg entries and so on. Regards, Tony _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel