From patchwork Thu Apr 28 22:57:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rui Salvaterra X-Patchwork-Id: 12831311 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 49367C433EF for ; Thu, 28 Apr 2022 22:59:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=SerBW8MOw68wFFCbuq25LJzAcmqCfKMO2cFJxwFvZ+M=; b=nN4CYEO6VOGVbq GSvQPGoya0L2IzQ/ZfknzQ853lY97zEPJk14ndK+TGQ+8ySjBSTu0xKgxlBoJj5G+DGubgRP1eZRJ bktFqX2tohnrRavlceRxgVA3YFGBhjXE7AC0YzGC7auH2S6nSPUrH7cTVuaeIacIoV1AXPazc2hRU u8RaJl1XHQwuhdZOsFBH99M5an3Zsmq0tsoIOYwB+gQaI307ZkqscxzcXFiCYCHlDvZlhHlW/WbdG J+3iUnfq1KJWI2kE7TkPXMYaJzbEgG+LDrgYr3deADArCfCmnzbf0U29EZd6cR5D19GMVqGFDvsTX H69W8qxVzJ+mR2HQd3GQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nkD5T-008uVi-54; Thu, 28 Apr 2022 22:58:15 +0000 Received: from mail-ed1-x533.google.com ([2a00:1450:4864:20::533]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nkD5P-008uUW-Px; Thu, 28 Apr 2022 22:58:13 +0000 Received: by mail-ed1-x533.google.com with SMTP id p18so7146795edr.7; Thu, 28 Apr 2022 15:58:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=R5/7OCxhqk5o9giaTDUQztGpi5IgQbeepSeYSbhWdII=; b=BZQqEcfqgYTQ01yTJ3p6tPu0vaoYxHxTZYXAPCQDyng2F9JErAwf+wBYyeCYL3jbyn fu7P7HVw2JjagdSunf6J7t0o3nqtfHGPh/ZLJHzYdg1s5shotJ5wMbZpAHCMdC4+K+BV uL4JNuQnZmCRBiUFM+rtrpfaTepwEclOBBGoL9iE+tm/pWzx/WIR5WB9W8CutqsrDxF5 8r5IwxNz3GLYfDgZMejyxQ0BjUIeQeCMTqhf73P19V3Bgg4MUbJ2q163D/OWSpHCbJdH OfKEAdrVw4U7Rx0/SOnvPBxeiyCVH2uAkdPiFk+O3ZvsaiODty7uqGGjbN4chYEWRdp+ 7WBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=R5/7OCxhqk5o9giaTDUQztGpi5IgQbeepSeYSbhWdII=; b=mvuzYrIKVAnpUgnlEa+S84XOruFt2VxxK25dib+Az/UPt4CzDO0h1u3SckfcmsFT4h lUKka66CkdkHCJWC5JqKwSD0lbgtu2KWEsvtCWVDS+S6XKuAu99o2kvNyHC+/xW07dKL zB7WAkyG53lrX0KH7fZ46uzHoRKWATW/idDhXBA49B+vaPqHKroSOn5JBKsu/hDwsQdf zWA5tmOJweFjVZYe0ChD8OUDYOv+6RYlGqVvsQ5quMKJDBoC7KC8YMqvHc3K6DbQbnvZ vJyXlcHgHSpadLRgg6wIY+ZyJyZsGqVyRD1TmcByRxSrUTGc3VSQeXUcUPv+3JFk9Esu PqoA== X-Gm-Message-State: AOAM530veLoWc1JsDUuaRxe8Wi4N5UaD7cH5c9nhGlW7j5aj9gwvCDya /uqAd6FaNeLuB5hEWmAEXXugS+7njg== X-Google-Smtp-Source: ABdhPJyLbUuBj/1YYm+3qmglf7zy9b/YbbcMub3/HL40okdVxkr6/TVxIZulAoEV9PjbfrGkO2N3Bw== X-Received: by 2002:a05:6402:2920:b0:425:d7c7:41f with SMTP id ee32-20020a056402292000b00425d7c7041fmr29248373edb.370.1651186687432; Thu, 28 Apr 2022 15:58:07 -0700 (PDT) Received: from crystalwell.adg.lan (a109-49-0-175.cpe.netcabo.pt. [109.49.0.175]) by smtp.gmail.com with ESMTPSA id a25-20020a056402169900b0042617ba63c8sm2219102edv.82.2022.04.28.15.58.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Apr 2022 15:58:06 -0700 (PDT) From: Rui Salvaterra To: linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org Cc: matthias.bgg@gmail.com, ryder.lee@mediatek.com, daniel@makrotopia.org, Rui Salvaterra Subject: [PATCH] arm64: dts: mt7622: specify the L2 cache topology Date: Thu, 28 Apr 2022 23:57:55 +0100 Message-Id: <20220428225755.785153-1-rsalvaterra@gmail.com> X-Mailer: git-send-email 2.36.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220428_155811_895571_B63D2806 X-CRM114-Status: GOOD ( 10.27 ) 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 On an MT7622 system, the kernel complains of not being able to detect the cache hierarchy of CPU 0. Specify the shared L2 cache node in the device tree, in order to fix this. Signed-off-by: Rui Salvaterra --- arch/arm64/boot/dts/mediatek/mt7622.dtsi | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi index 6f8cb3ad1e84..3d6eaf6dd078 100644 --- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi @@ -80,6 +80,7 @@ cpu0: cpu@0 { enable-method = "psci"; clock-frequency = <1300000000>; cci-control-port = <&cci_control2>; + next-level-cache = <&L2>; }; cpu1: cpu@1 { @@ -94,6 +95,12 @@ cpu1: cpu@1 { enable-method = "psci"; clock-frequency = <1300000000>; cci-control-port = <&cci_control2>; + next-level-cache = <&L2>; + }; + + L2: l2-cache { + compatible = "cache"; + cache-level = <2>; }; };