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=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 2F956C433E9 for ; Thu, 3 Sep 2020 16:46:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EF80420775 for ; Thu, 3 Sep 2020 16:46:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599151608; bh=ZqJtrKKWgIPEOxc3s/QmD5Oj7Xm0HOa8VK5RRLpg1Es=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=Gr/SXe78hS94Y3YHf1gphMcdRv3ZgNKIqLPEv02QFTDfGucb6MC94EnesGAQdnKt8 gEOADf+qR2YF0zT509G2TZrRQW4C2ejn6Q8kQ8rP06eNkd12SwHPY3klD9bouh+LkR 9iBRLcMRjfBkvn9fVzXeFCA0oH9uOA89BXa0anf4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728321AbgICQqr (ORCPT ); Thu, 3 Sep 2020 12:46:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:59842 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727786AbgICQqr (ORCPT ); Thu, 3 Sep 2020 12:46:47 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CF12520716; Thu, 3 Sep 2020 16:46:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599151607; bh=ZqJtrKKWgIPEOxc3s/QmD5Oj7Xm0HOa8VK5RRLpg1Es=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=zgGbSRhKlIfvoOt4AmrOygHHWNmuzFxWkchzwtQLmMPDxevUocAdPOgw2umjSxCZ9 VyVJUg0+D2SX1LSbNzXyX6vrnItG6pHjp2VdROBQUMYE2/5Vw2a5SPDD/+3CtenpuT dIUUUBj1lt6tiARqsRu3VLgthsWuORuuCZORWi3w= Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1kDsNo-008wl4-QI; Thu, 03 Sep 2020 17:46:45 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Thu, 03 Sep 2020 17:46:44 +0100 From: Marc Zyngier To: Zhen Lei Cc: Thomas Gleixner , Jason Cooper , Rob Herring , devicetree , linux-kernel , Kefeng Wang Subject: Re: [PATCH 0/2] add support for Hisilicon SD5203 vector interrupt controller In-Reply-To: <20200903120504.2308-1-thunder.leizhen@huawei.com> References: <20200903120504.2308-1-thunder.leizhen@huawei.com> User-Agent: Roundcube Webmail/1.4.8 Message-ID: X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: thunder.leizhen@huawei.com, tglx@linutronix.de, jason@lakedaemon.net, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, wangkefeng.wang@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 2020-09-03 13:05, Zhen Lei wrote: > The interrupt controller of SD5203 SoC is VIC(vector interrupt > controller), it's > based on Synopsys DesignWare APB interrupt controller (dw_apb_ictl) IP, > but it > can not directly use dw_apb_ictl driver. The main reason is that VIC is > used as > primary interrupt controller and dw_apb_ictl driver worked for > secondary > interrupt controller. What prevents you from improving the existing driver so that it can act as a primary interrupt controller? It shouldn't be rocket science, really. There are some examples in the tree of drivers that can be used in both situations (GIC, VIC Thanks, M. -- Jazz is not dead. It just smells funny...