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Sat, 24 Jul 2021 12:25:32 +0000 From: Anup Patel To: Atish Patra , Alistair Francis Cc: Anup Patel , opensbi@lists.infradead.org, Anup Patel Subject: [PATCH 4/5] lib: utils/timer: Allow ACLINT MTIMER supporting only 32-bit MMIO Date: Sat, 24 Jul 2021 17:55:02 +0530 Message-Id: <20210724122503.2486624-5-anup.patel@wdc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210724122503.2486624-1-anup.patel@wdc.com> References: <20210724122503.2486624-1-anup.patel@wdc.com> X-ClientProxiedBy: MAXPR0101CA0006.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:c::16) To CO6PR04MB7812.namprd04.prod.outlook.com (2603:10b6:303:138::6) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from wdc.com (122.179.61.225) by MAXPR0101CA0006.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:c::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.24 via Frontend Transport; Sat, 24 Jul 2021 12:25:30 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4c737fa4-aff7-48fb-2ee0-08d94e9e2129 X-MS-TrafficTypeDiagnostic: CO6PR04MB7764: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: WDCIPOUTBOUND: EOP-TRUE X-MS-Oob-TLC-OOBClassifiers: OLM:765; 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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: We can have ACLINT MTIMER devices which only support 32-bit MMIO accesses on RV64 system so this patch adds a boolean DT property "mtimer, no-64bit-mmio" to detect this from MTIMER DT node. Signed-off-by: Anup Patel --- lib/utils/timer/fdt_timer_mtimer.c | 3 +++ 1 file changed, 3 insertions(+) Content analysis details: (-2.5 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [216.71.153.144 listed in list.dnswl.org] 0.0 SPF_NONE SPF: sender does not publish an SPF Record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 MSGID_FROM_MTA_HEADER Message-Id was added by a relay X-BeenThere: opensbi@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "opensbi" Errors-To: opensbi-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org We can have ACLINT MTIMER devices which only support 32-bit MMIO accesses on RV64 system so this patch adds a boolean DT property "mtimer,no-64bit-mmio" to detect this from MTIMER DT node. Signed-off-by: Anup Patel --- lib/utils/timer/fdt_timer_mtimer.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/utils/timer/fdt_timer_mtimer.c b/lib/utils/timer/fdt_timer_mtimer.c index b08ed38..15a36ed 100644 --- a/lib/utils/timer/fdt_timer_mtimer.c +++ b/lib/utils/timer/fdt_timer_mtimer.c @@ -58,6 +58,9 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff, mt->mtime_size = size[0]; mt->mtimecmp_addr = addr[1]; mt->mtimecmp_size = size[1]; + /* Parse additional ACLINT MTIMER properties */ + if (fdt_getprop(fdt, nodeoff, "mtimer,no-64bit-mmio", &rc)) + mt->has_64bit_mmio = false; } rc = aclint_mtimer_cold_init(mt, mtmaster);