Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757296Ab3FCJva (ORCPT ); Mon, 3 Jun 2013 05:51:30 -0400 Received: from mail-ie0-f182.google.com ([209.85.223.182]:52814 "EHLO mail-ie0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755219Ab3FCJv1 (ORCPT ); Mon, 3 Jun 2013 05:51:27 -0400 MIME-Version: 1.0 In-Reply-To: <51AC15FA.4060800@synopsys.com> References: <20130530211944.05F4D3E0A90@localhost> <1370014348-21121-1-git-send-email-christian.ruppert@abilis.com> <20130531221814.534DF3E08FE@localhost> <51AC15FA.4060800@synopsys.com> From: Grant Likely Date: Mon, 3 Jun 2013 10:51:06 +0100 X-Google-Sender-Auth: vlbMLlUwB6iTfTfPbJHRe-5Eo4U Message-ID: Subject: Re: [PATCH V3] irqchip: Add TB10x interrupt controller driver To: Vineet Gupta Cc: Thomas Gleixner , Christian Ruppert , Rob Herring , Rob Landley , devicetree-discuss , "linux-doc@vger.kernel.org" , Linux Kernel Mailing List , Pierrick Hascoet Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1102 Lines: 22 On Mon, Jun 3, 2013 at 5:05 AM, Vineet Gupta wrote: > On 06/01/2013 03:48 AM, Grant Likely wrote: >> If I were working on this system I'd drop the >> snps,arc700-intc node entirely and have a single abilis,tb10x-intc that >> encapsulated the properties of both (you would of course want to share >> handler functions for the 'normal' inputs without the custom features). >> That would eliminate the goofyness of listing 27 separate interrupts in >> the abilis,tb10x-ictl interrupts property. > > But how is this different from other systems with a primary in-core intc and a > cascaded external intc. How do they do it. I guess I need to read up more on this. Usually cascaded irq controllers have multiple irqs multiplexed onto a single irq on the parent controller. It's the 1:1 situation that makes this controller odd. g, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/