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Mon, 9 Dec 2019 11:25:34 +0000 From: Yash Shah To: robh+dt@kernel.org, mark.rutland@arm.com, paul.walmsley@sifive.com Cc: palmer@dabbelt.com, aou@eecs.berkeley.edu, bmeng.cn@gmail.com, allison@lohutok.net, alexios.zavras@intel.com, atish.patra@wdc.com, tglx@linutronix.de, gregkh@linuxfoundation.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Yash Shah Subject: [PATCH 0/2] L2 ccache DT and cacheinfo support to read no. of L2 cache ways enabled Date: Mon, 9 Dec 2019 16:55:04 +0530 Message-Id: <1575890706-36162-1-git-send-email-yash.shah@sifive.com> X-Mailer: git-send-email 2.7.4 Content-Type: text/plain X-ClientProxiedBy: BM1PR01CA0100.INDPRD01.PROD.OUTLOOK.COM (2603:1096:b00::16) To CH2PR13MB3368.namprd13.prod.outlook.com (2603:10b6:610:2c::26) MIME-Version: 1.0 Received: from dhananjayk-PowerEdge-R620.open-silicon.com (114.143.65.226) by BM1PR01CA0100.INDPRD01.PROD.OUTLOOK.COM (2603:1096:b00::16) with Microsoft SMTP Server (version=TLS1_2, cipher=) via Frontend Transport; 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X-Microsoft-Antispam-Message-Info: 3S9P/D1Rz8CfwM91IaGcRNQRtq+5SbbbKRNGI1FRmIq9tezADJif3eGw/sKSntWQyn1paOcGjaNRRhy35BTzKGi9QBIYliiliBgLwyjx6ZLMnWBcRPipIEXMwKe3HueJHixYyuk5CT0a0cgAJ9yUsAM4a9uOsQz2y483yLjYXQhlVLGO+He7XKElfVU8L9i7wDyuYX6NKZWk2I3CHYNhg0x/hAMDdFS2s6u3kbyEIMRkNVwTzpoDsXI3anYzjJawouAyFOD/2LhFryE0FDrP2HdMfHlk1VQmwwtqWCEfMFpt8QYtKaa1oo9dxEp9ySgvTvn7bPvhfcPqbaoZay6zpFggDuyJWWy0+kusZymo5DPM99wBno9vB6zW5ybfT5DawgavRPZyyLYT2T2wcGf6VT10xF9bci9g6u/EX9dWFH5dnhodY3nxkqkfmkIS3kFx X-OriginatorOrg: sifive.com X-MS-Exchange-CrossTenant-Network-Message-Id: 22561b52-52aa-4a99-ba30-08d77c9a81cf X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Dec 2019 11:25:34.5244 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 22f88e9d-ae0d-4ed9-b984-cdc9be1529f1 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 366v63BRIpKX5WT6Woa0CGZNSMs+nC7TzGHcueUMBYTsbz7dNXDO3xTSekIuSwhUM8y4IZGXYpMUWMXl7PovIw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR13MB3894 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The patchset includes the patch to implement a private attribute named "number_of_ways_enabled" in the cacheinfo framework. Reading this attribute returns the number of L2 cache ways enabled at runtime, The patchset also include the patch to add DT node for SiFive L2 cache controller. This patchset is based on Linux v5.4 and tested on HiFive Unleashed board. The cacheinfo patch depends on Christoph Hellwig's patch: "riscv: move sifive_l2_cache.c to drivers/soc" Yash Shah (2): riscv: dts: Add DT support for SiFive L2 cache controller riscv: cacheinfo: Add support to determine no. of L2 cache way enabled arch/riscv/boot/dts/sifive/fu540-c000.dtsi | 26 +++++++++++++++++++++++++ arch/riscv/include/asm/sifive_l2_cache.h | 2 ++ arch/riscv/kernel/cacheinfo.c | 31 ++++++++++++++++++++++++++++++ drivers/soc/sifive/sifive_l2_cache.c | 5 +++++ 4 files changed, 64 insertions(+) -- 2.7.4