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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 E95CAC7618B for ; Wed, 24 Jul 2019 10:41:47 +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 B948521911 for ; Wed, 24 Jul 2019 10:41:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="GcPsw05m" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B948521911 Authentication-Results: mail.kernel.org; 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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hqEiQ-0004bM-Mb; Wed, 24 Jul 2019 10:41:46 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hqEiN-0004an-Ov; Wed, 24 Jul 2019 10:41:45 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 61409337; Wed, 24 Jul 2019 03:41:40 -0700 (PDT) Received: from [10.1.197.61] (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 66A1C3F71F; Wed, 24 Jul 2019 03:41:35 -0700 (PDT) Subject: Re: [PATCH RFC 18/18] ARM: dts: Add minimal Raspberry Pi 4 support To: Vladimir Murzin , Stefan Wahren References: <1563398164-2679-1-git-send-email-wahrenst@gmx.net> <1563398164-2679-5-git-send-email-wahrenst@gmx.net> <20190723191326.3afdff83@why> <34b2b928-c078-8898-842b-908a90593932@arm.com> From: Marc Zyngier Openpgp: preference=signencrypt Autocrypt: addr=marc.zyngier@arm.com; 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Linux aarch64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <34b2b928-c078-8898-842b-908a90593932@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190724_034143_899620_8363D0A2 X-CRM114-Status: GOOD ( 16.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Ulf Hansson , Florian Fainelli , Scott Branden , Stephen Boyd , Ray Jui , Linus Walleij , Adrian Hunter , Eric Anholt , Rob Herring , bcm-kernel-feedback-list@broadcom.com, Mark Brown , Nicolas Saenz Julienne , Michael Turquette , linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org 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 Vladimir, On 24/07/2019 10:51, Vladimir Murzin wrote: > On 7/23/19 7:13 PM, Marc Zyngier wrote: >>> + arm-pmu { >>> + /* >>> + * N.B. the A72 PMU support only exists in arch/arm64, hence >>> + * the fallback to the A53 version. >>> + */ >>> + compatible = "arm,cortex-a72-pmu", "arm,cortex-a53-pmu"; >> You're thus guaranteed to count the wrong events... And you could at >> least have "arm,armv8-pmuv3". >> > > Isn't "arm,armv8-pmuv3" still "only exists in arch/arm64" (along with "arm,cortex-a53-pmu")? Absolutely. And yet this is describing the HW, not the shortcomings of the kernel. I want to be able to take the same DT and run it on the 64bit kernel. > P.S. > Yes, I remember you posted some related patches in a past yet they never hit mainline :( Will wanted me to repaint the whole of the 32bit perf code. I may end-up doing that in the future if I get some idle time (but don't hold your breath). M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel