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=-4.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 33538C433DB for ; Sat, 6 Mar 2021 18:30:28 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 A223864FF2 for ; Sat, 6 Mar 2021 18:30:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A223864FF2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Subject:Cc:To: From:Message-ID:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=y0zgRAcIeYoazJIZOHl74IrzrMCosmiF0pJgZkKFqJs=; b=AYGSuIfaw9MokCmpCncj88wfI ubtZOZwd24ck08kFmCQc8LfGN1z6mbme+PTVvEo351b7cK4rOKFZUppDrPihkAY0MkYK4kr0RJuV1 egIfbGVxWUiH+LMUhg8EjPyUejLpA2WXZtcSl5HH1bGWgTdyWxJ4PwxoHQDKpnCqONNjoJNhJfCvg f3Z1PUHJbAVPh4LaPki0B8MCpmokgh5LWjhNMnt9zYZczm/TWaLBGNqLt5uhr1AzwoWZqxW1QhVP2 H0M96ObrXpA/iJixcRY+Nz9ogMRf+0WPR/5hUH3b2sCssbPw6xvH/f8xAYGC1ARoc6sPOsAH8Gz1Q pLeC5OVVw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lIbfD-004Adn-A2; Sat, 06 Mar 2021 18:28:31 +0000 Received: from mail.kernel.org ([198.145.29.99]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lIbf7-004Abw-Ne; Sat, 06 Mar 2021 18:28:28 +0000 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 0561064F6E; Sat, 6 Mar 2021 18:28:24 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=wait-a-minute.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1lIbf3-0005iN-Qy; Sat, 06 Mar 2021 18:28:21 +0000 Date: Sat, 06 Mar 2021 18:28:20 +0000 Message-ID: <875z24rvaz.wl-maz@kernel.org> From: Marc Zyngier To: Daniel Palmer Cc: Mark-PK Tsai , Daniel Palmer , Thomas Gleixner , Jason Cooper , Matthias Brugger , Linux Kernel Mailing List , linux-arm-kernel , linux-mediatek@lists.infradead.org, yj.chiang@mediatek.com Subject: Re: [PATCH] irqchip/irq-mst: Support polarity configuration In-Reply-To: References: <20210305120930.14297-1-mark-pk.tsai@mediatek.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: daniel@0x0f.com, mark-pk.tsai@mediatek.com, daniel@thingy.jp, tglx@linutronix.de, jason@lakedaemon.net, matthias.bgg@gmail.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, yj.chiang@mediatek.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210306_182827_043274_DA061D4D X-CRM114-Status: GOOD ( 16.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat, 06 Mar 2021 17:06:51 +0000, Daniel Palmer wrote: > > Hi Mark-PK, > > I'm trying to understand the logic behind the changes. > It seems like the polarity of interrupts is always the same between > the MStar intc and the GIC? Low level interrupts are handled in the > mstar intc and become high level interrupts to the GIC? That's because the GIC only supports level-high input interrupts when they are level triggered (and rising edge when edge triggered). Thanks, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel