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Mon, 5 Jun 2023 06:24:31 -0500 From: Michal Simek To: , , , CC: Radhey Shyam Pandey , Conor Dooley , Harini Katakam , "Krzysztof Kozlowski" , Laurent Pinchart , Michael Grzeschik , Parth Gajjar , "Rob Herring" , Robert Hancock , "Sai Krishna Potthuri" , Tanmay Shah , , Subject: [PATCH v3 1/1] arm64: zynqmp: Add L2 cache nodes Date: Mon, 5 Jun 2023 13:23:58 +0200 Message-ID: <130e5a6acbee94809b63a61cde5450fbff88cc9c.1685964230.git.michal.simek@amd.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1686; i=michal.simek@amd.com; h=from:subject:message-id; bh=YwbTCh+jeWKcH+pAt99JaRdQzbQqXK1Kh/r/P9hHPtQ=; b=owGbwMvMwCR4yjP1tKYXjyLjabUkhpTao6cFJW8dfDvVt3nttZl/F61gjXl1a+kClU/2U0ONP s5a9fFGZUcsC4MgE4OsmCKLtM2VM3srZ0wRvnhYDmYOKxPIEAYuTgGYyINohllMq5asXBvkduLo N31Lc301BV2HFwsY5nBU3mj99TokteHivW/Nfa++H7y22A0A X-Developer-Key: i=michal.simek@amd.com; a=openpgp; fpr=67350C9BF5CCEE9B5364356A377C7F21FE3D1F91 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT006:EE_|DM4PR12MB6063:EE_ X-MS-Office365-Filtering-Correlation-Id: 03d6da96-3667-4922-a49a-08db65b772b0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jun 2023 11:24:38.0344 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 03d6da96-3667-4922-a49a-08db65b772b0 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT006.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6063 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767862007618789918?= X-GMAIL-MSGID: =?utf-8?q?1767862007618789918?= From: Radhey Shyam Pandey Describe SoC L2 cache hierarchy. Signed-off-by: Radhey Shyam Pandey Signed-off-by: Michal Simek --- Changes in v3: - Add missing cache-unified Changes in v2: - Update commit message to remove Linux part - reported by Laurent Linux kernel throws "cacheinfo: Unable to detect cache hierarchy for CPU 0" warning when booting on zu+ Soc. To fix it add the L2 cache node and let each CPU point to it. --- arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi index 02cfcc716936..394db49ac6cb 100644 --- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi +++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi @@ -33,6 +33,7 @@ cpu0: cpu@0 { operating-points-v2 = <&cpu_opp_table>; reg = <0x0>; cpu-idle-states = <&CPU_SLEEP_0>; + next-level-cache = <&L2>; }; cpu1: cpu@1 { @@ -42,6 +43,7 @@ cpu1: cpu@1 { reg = <0x1>; operating-points-v2 = <&cpu_opp_table>; cpu-idle-states = <&CPU_SLEEP_0>; + next-level-cache = <&L2>; }; cpu2: cpu@2 { @@ -51,6 +53,7 @@ cpu2: cpu@2 { reg = <0x2>; operating-points-v2 = <&cpu_opp_table>; cpu-idle-states = <&CPU_SLEEP_0>; + next-level-cache = <&L2>; }; cpu3: cpu@3 { @@ -60,6 +63,13 @@ cpu3: cpu@3 { reg = <0x3>; operating-points-v2 = <&cpu_opp_table>; cpu-idle-states = <&CPU_SLEEP_0>; + next-level-cache = <&L2>; + }; + + L2: l2-cache { + compatible = "cache"; + cache-level = <2>; + cache-unified; }; idle-states {