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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 96EC0CFD318 for ; Mon, 24 Nov 2025 17:13:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5o2pxmfMGaz7ANUAFnlvl5E1LWTsFS1uKqaGykE9SLk=; b=FH1kTJh/yV8FSfKSD2G3mvdw3c MDKkT2ZHWiZFELK7Y9EYMkhkUIeDv+ICDBH0A0So0ifQFiH4zb80TauKCGxUEu+8+dH6nSMbB8lSt 8RkSssKtXLhacMEnCH6wB3yTn2HZrwH38zhiyHpm8hHYXY2Q2H/Pe2y/ZKci6g3MV0K7zDrKL33ro VYO2IAtu0kr6sXJB06kwisMYhwBjm0m32e+VGdHIaE5sPQKVxTNf8pnmpeIPquCs7G5tzBTEKMVmE ccJ8ODTt4e5bE2EmgRTIHV253P/DRpV8XqsyBiEOZHo6RaQ201JCrq84Pj1GN0l19zT9bG0VNi434 5/B83Q7g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vNa7c-0000000C5In-2kBj; Mon, 24 Nov 2025 17:13:04 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vNa7a-0000000C5HY-0M1O for linux-arm-kernel@lists.infradead.org; Mon, 24 Nov 2025 17:13:03 +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 3A5B01477; Mon, 24 Nov 2025 09:12:53 -0800 (PST) Received: from [10.1.200.38] (e119884-lin.cambridge.arm.com [10.1.200.38]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id F162C3F73B; Mon, 24 Nov 2025 09:12:59 -0800 (PST) Message-ID: Date: Mon, 24 Nov 2025 17:12:58 +0000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: morello: Add CMN PMU To: Robin Murphy , liviu.dudau@arm.com, sudeep.holla@arm.com, lpieralisi@kernel.org Cc: linux-arm-kernel@lists.infradead.org References: Content-Language: en-US From: Vincenzo Frascino In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251124_091302_165919_471A8348 X-CRM114-Status: GOOD ( 13.84 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Robin, On 24/11/2025 16:35, Robin Murphy wrote: > [ Trying to catch up with loose ends... ] > > On 2025-05-27 1:55 pm, Robin Murphy wrote: >> Although CMN-Skeena is mildly modified for the Morello hardware >> architecture, it still identifies itself as CMN-600 r3p1. Since >> there are also no documented changes to its PMU functionality, >> we can make the PMU accessible via the standard CMN-600 binding. >> In general, PMU registers are non-functional on CMN Fast Models, >> so this is only meaningful for the real SDP hardware. > > Vincenzo, Sudeep, any opinion on this? I believe it was considered useful by at > least the one person who asked me about it :) > Sorry, I missed your patch. Just acked it. > Thanks, > Robin. > >> >> Signed-off-by: Robin Murphy >> --- >>   arch/arm64/boot/dts/arm/morello-sdp.dts | 7 +++++++ >>   1 file changed, 7 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/arm/morello-sdp.dts b/arch/arm64/boot/dts/ >> arm/morello-sdp.dts >> index cee49dee7571..42c85f450fa9 100644 >> --- a/arch/arm64/boot/dts/arm/morello-sdp.dts >> +++ b/arch/arm64/boot/dts/arm/morello-sdp.dts >> @@ -108,6 +108,13 @@ smmu_pcie: iommu@4f400000 { >>           dma-coherent; >>       }; >>   +    pmu@50000000 { >> +        compatible = "arm,cmn-600"; >> +        reg = <0x0 0x50000000 0x0 0x4000000>; >> +        interrupts = ; >> +        arm,root-node = <0x804000>; >> +    }; >> + >>       pcie_ctlr: pcie@28c0000000 { >>           device_type = "pci"; >>           compatible = "pci-host-ecam-generic"; > -- Regards, Vincenzo