From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752252AbcGLIXm (ORCPT ); Tue, 12 Jul 2016 04:23:42 -0400 Received: from mout.kundenserver.de ([212.227.126.134]:55960 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751503AbcGLIXk (ORCPT ); Tue, 12 Jul 2016 04:23:40 -0400 From: Arnd Bergmann To: linux-arm-kernel@lists.infradead.org Cc: Wan Zongshun , devicetree@vger.kernel.org, jason@lakedaemon.net, Wan Zongshun , Daniel Lezcano , linux-kernel@vger.kernel.org, Russell King , p.zabel@pengutronix.de, Thomas Gleixner , linux-clk@vger.kernel.org Subject: Re: [PATCH v2 02/10] irqchip: add irqchip driver for nuc900 Date: Tue, 12 Jul 2016 10:26:28 +0200 Message-ID: <5434334.4rKzx80y6W@wuerfel> User-Agent: KMail/5.1.3 (Linux/4.4.0-22-generic; KDE/5.18.0; x86_64; ; ) In-Reply-To: <5784968A.7080007@iommu.org> References: <1468135649-19980-1-git-send-email-vw@iommu.org> <1761342.TGgYi16yul@wuerfel> <5784968A.7080007@iommu.org> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Provags-ID: V03:K0:GedovC50Aq5iIGjboSoPePOSJCV6zDP8driqeauBLxRyhC5UakI 4DdNoIMdFUA8jt0PFrOaGD5RjMAz457ejKYqAg6S0WoPU0hOG8akxkvVfuIl1p4N2vm9uCO v1RGk40yu9hsdWWbFIQ2bjN8LIbieCWfoTOTXeqA7BaQFudOBZhZxRx1sN5eB7M9HeNr59M vh9K6LEOz+mmQ3dszVZew== X-UI-Out-Filterresults: notjunk:1;V01:K0:C2ZNoQM8WfE=:IwCmkw2XRxYLPRZxVOkjcW oEuLMfDBl4Z67XhajXfTdppxmIBfyv8oOxLpqOmJDDh3GPEdn9gAhlnO7rp/VSo1mT8GBs7Yk IZDjia6vUcT3lGoPy9Xu9v+1n/WiN7VODUL6Vwvv8UEf5AtVV6gs4fLexv2GbLOUsLa9FTNGd Mc1a+frssvpLPuP8n4ikeNDnbZgdM2S7NsAw4Vc2qz0yjCMXzdNXX+zH6blDByTZ8mXLdzGn4 3Jp8t7BU11Z9TE1f97Q+u18U9zfHZ2WpbbGdKt5zfCrToo6sQeNP8Pc/8a2wiLwPJ7maHPilU NLmKDXnUxI0bGFgP40kufuRCF0eIU8iuDFOI8UECw0iTBx8rhc/C1+3mjAFSYzdGUgSTMIU9o rulcjqLLXHp9QbiTj1u0ztuaZQftYr8+nCH1/yZodNGR1UbxbjUM5UDWeCoClz9am2fkP6ZJ1 npLYigx620Rp0h2Yeb8xJnJ1j7Fjw1QpQsb7zPV0MNKl8AtRMRIebQFk9mA012A4dtJAbKwyP U9/gwnKpyaGsqmb9Itnakmt/RgYUanvihl6xtJvxJgdS66ySeZmfjmK/KYgDaSPWIlS6zcEng 4ityzqkh1HypCkzDnJwBY4NigVoaFL1HRLAJqsVT0kE9xl2nOEkvq1xRegCBYsiZXItVRoZPE KNPfTNde7Q6cD8PlKv/uPFQOsNhd6VyEdkT4GoQwzZz4HoK4ly48SbJBNDsB9xC+Gqgul+YmA QbKl4u/7ffv2FEQP Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday, July 12, 2016 3:04:42 PM CEST Wan Zongshun wrote: > > > > Ideally, this should just go away once we use SPARSE_IRQ. > > This platform also can use SPARSE_IRQ? this just a simple irq map and no > more irq number in this Soc. > SPARSE_IRQ is implied by ARCH_MULTIPLATFORM, so we will have to use it once that gets enabled. Your new irqchip driver already handles IRQ domains, so it will work out of the box with SPARSE_IRQ, but you have to change the reference to "NR_IRQS" into something else. I've prototyped a patch series to enable ARCH_MULTIPLATFORM, I hope you can start working from what I have and get it to run. Arnd