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Wed, 8 Apr 2026 11:53:30 +0000 Received: from AS4PR09MB5681.eurprd09.prod.outlook.com ([fe80::8d2b:5798:928f:9faa]) by AS4PR09MB5681.eurprd09.prod.outlook.com ([fe80::8d2b:5798:928f:9faa%6]) with mapi id 15.20.9769.018; Wed, 8 Apr 2026 11:53:30 +0000 From: Aleksa Paunovic To: "devnull+aleksa.paunovic.htecgroup.com@kernel.org" CC: Aleksa Paunovic , "alex@ghiti.fr" , "aou@eecs.berkeley.edu" , "cfu@mips.com" , "conor+dt@kernel.org" , "conor.dooley@microchip.com" , "daniel.lezcano@linaro.org" , "devicetree@vger.kernel.org" , Djordje Todorovic , "jstultz@google.com" , "krzk+dt@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-riscv@lists.infradead.org" , "palmer@dabbelt.com" , "paul.walmsley@sifive.com" , "pjw@kernel.org" , "robh@kernel.org" , "sboyd@kernel.org" , "tglx@linutronix.de" , "wangruikang@iscas.ac.cn" Subject: Re: [PATCH v7 0/3] riscv: Use GCR.U timer device as clocksource Thread-Topic: [PATCH v7 0/3] riscv: Use GCR.U timer device as clocksource Thread-Index: AQHcsVrKih43OFmRVkSBFISSf3ZzwbXVOeuA Date: Wed, 8 Apr 2026 11:53:30 +0000 Message-ID: References: <20260311-riscv-time-mmio-v7-0-016845a0f808@htecgroup.com> In-Reply-To: <20260311-riscv-time-mmio-v7-0-016845a0f808@htecgroup.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=htecgroup.com; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On 3/11/26 14:26, Aleksa Paunovic via B4 Relay wrote: > This series adds bindings for the GCR.U timer device and corresponding > driver support. Accessing the memory mapped shadow of the mtime register > in the GCR.U region should be faster > than trapping to M mode each time the timer needs to be read. > The timer device does not implement any interrupts, therefore the > timer-riscv clockevent implementation should suffice. > > We tested the patchset both on QEMU and the Boston board with the P8700 bitfile: > - Coremark and timer kselftests on QEMU emulating an 8 core CPU > - Coremark and timer kselftests on the Boston board with a single core CPU. Gentle ping. _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv