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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A94FC433FE for ; Mon, 18 Apr 2022 14:02:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240925AbiDROEn (ORCPT ); Mon, 18 Apr 2022 10:04:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245061AbiDROCC (ORCPT ); Mon, 18 Apr 2022 10:02:02 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13148344D9; Mon, 18 Apr 2022 06:09:42 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 714BA60FD2; Mon, 18 Apr 2022 13:09:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6650EC385A8; Mon, 18 Apr 2022 13:09:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1650287359; bh=yn1hkL3BE7IQP3XQ6XQsGCgxQjHxbrxQVwxQttzJO/Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=r8+9Wxnu/+bbS6G2YRW0xNWhugZOKbgZZ1TRjVcyaMDmffv3gdxPVZuZkbqLgx8xd VzBnjGNP7czVbnpKM0Kt4UmAoEjDF6ZjkM33b3+u+xJWhGWnRpAYWDuXTY138RRgSV cerPsYsD5s7BON36GB7nKKuUssV8NAVtMyMxCZzI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Richard Schleich , Stefan Wahren , Florian Fainelli , Sasha Levin Subject: [PATCH 4.9 138/218] ARM: dts: bcm2837: Add the missing L1/L2 cache information Date: Mon, 18 Apr 2022 14:13:24 +0200 Message-Id: <20220418121203.537555479@linuxfoundation.org> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220418121158.636999985@linuxfoundation.org> References: <20220418121158.636999985@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Richard Schleich [ Upstream commit bdf8762da268d2a34abf517c36528413906e9cd5 ] This patch fixes the kernel warning "cacheinfo: Unable to detect cache hierarchy for CPU 0" for the bcm2837 on newer kernel versions. Signed-off-by: Richard Schleich Tested-by: Stefan Wahren [florian: Align and remove comments matching property values] Signed-off-by: Florian Fainelli Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/broadcom/bcm2837.dtsi | 49 +++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/arch/arm64/boot/dts/broadcom/bcm2837.dtsi b/arch/arm64/boot/dts/broadcom/bcm2837.dtsi index c1f719b7097a..95e3cb38474f 100644 --- a/arch/arm64/boot/dts/broadcom/bcm2837.dtsi +++ b/arch/arm64/boot/dts/broadcom/bcm2837.dtsi @@ -31,12 +31,26 @@ #address-cells = <1>; #size-cells = <0>; + /* Source for d/i-cache-line-size and d/i-cache-sets + * https://developer.arm.com/documentation/ddi0500/e/level-1-memory-system + * /about-the-l1-memory-system?lang=en + * + * Source for d/i-cache-size + * https://magpi.raspberrypi.com/articles/raspberry-pi-3-specs-benchmarks + */ cpu0: cpu@0 { device_type = "cpu"; compatible = "arm,cortex-a53"; reg = <0>; enable-method = "spin-table"; cpu-release-addr = <0x0 0x000000d8>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set + next-level-cache = <&l2>; }; cpu1: cpu@1 { @@ -45,6 +59,13 @@ reg = <1>; enable-method = "spin-table"; cpu-release-addr = <0x0 0x000000e0>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set + next-level-cache = <&l2>; }; cpu2: cpu@2 { @@ -53,6 +74,13 @@ reg = <2>; enable-method = "spin-table"; cpu-release-addr = <0x0 0x000000e8>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set + next-level-cache = <&l2>; }; cpu3: cpu@3 { @@ -61,6 +89,27 @@ reg = <3>; enable-method = "spin-table"; cpu-release-addr = <0x0 0x000000f0>; + d-cache-size = <0x8000>; + d-cache-line-size = <64>; + d-cache-sets = <128>; // 32KiB(size)/64(line-size)=512ways/4-way set + i-cache-size = <0x8000>; + i-cache-line-size = <64>; + i-cache-sets = <256>; // 32KiB(size)/64(line-size)=512ways/2-way set + next-level-cache = <&l2>; + }; + + /* Source for cache-line-size + cache-sets + * https://developer.arm.com/documentation/ddi0500 + * /e/level-2-memory-system/about-the-l2-memory-system?lang=en + * Source for cache-size + * https://datasheets.raspberrypi.com/cm/cm1-and-cm3-datasheet.pdf + */ + l2: l2-cache0 { + compatible = "cache"; + cache-size = <0x80000>; + cache-line-size = <64>; + cache-sets = <512>; // 512KiB(size)/64(line-size)=8192ways/16-way set + cache-level = <2>; }; }; }; -- 2.34.1