From nobody Wed Oct 1 23:32:05 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 088A8321F3E; Thu, 25 Sep 2025 21:33:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758835994; cv=none; b=D2uo8+ITKnt2jl2KZ4AjLgQ1iuBH/zRkVeZZLdoGpMtvz7WMGDYhsKwBBJ/Ys2KDAy88B2O+IxBmmZyoEhNS1Wt4/q5bOzeaiD3i512OAbskDf/eR/FuBJT7txU8yhL0lvEAYD9F4p7e/cskK1sN+wpHVo6soe6uXPGrerHKD6s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758835994; c=relaxed/simple; bh=lLV27OB8UA3DiHHacQosPEUsot/Rl+iSXrXHWrs2cME=; h=Date:From:To:Subject:Cc:MIME-Version:Message-ID:Content-Type; b=ETGiMfeeSANvfshNiC53ElISawXa/NiRfcPoGedthMbwQUdXs9a1X+nQT8/Gb1sPQ+sAa8zCZlyz2OYiIj17O3dQMCP+NarxienbZ9xcNNHOO19mvUqI7f0F/Q4xNZk8rk/sjCUXlNMtJhjKamGbdFdVVGwYpkF5p9Hq/JiM5PM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=OnsCFCMw; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=O6T2EGtJ; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="OnsCFCMw"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="O6T2EGtJ" Date: Thu, 25 Sep 2025 21:33:09 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1758835990; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=hXpozGTPm1E5yDT9miJoNCi7BGaBbXgOWqFBruVaaaw=; b=OnsCFCMwv7qrN5pQqfUY1MpxOlgHploXCV2SelRvOM10RheTr4d+4V9p0IB2Os8DwBofzo +V2ZitkQJg+pmXRodf2w0SCCQLIAix3LBKY7+KOPBVojvzuf8Q1hZOq1UJTS/4R4GPBXGs GMr/CvnrakU+QZTrzrjF/wnw574BJ5SrG/E6bpMvajFK9f0hQsdJXFE2jUNJjbLkPDMotp iuqpRROmkVyfXTMGEtmOqo6CZgHt6q7OCRCqpDo3IcC7caBCXE+PdQVQTPdh5YcSz8evIW owLWasXGJaIZ1oKN//uKs9ghDmWQVfyRufhYDIvmIHNVUEKk0juzv9HYIJNIrw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1758835990; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=hXpozGTPm1E5yDT9miJoNCi7BGaBbXgOWqFBruVaaaw=; b=O6T2EGtJrFlY6bWT5aCt6LfSuuCnXjkQoIYvUgR5+LhtoPeyTKo25QDxhtcOUlK+vSQJ13 /lHosBzRDQAr8ZBQ== From: "tip-bot2 for Marc Zyngier" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: timers/clocksource] clocksource/drivers/arm_arch_timer_mmio: Add MMIO clocksource Cc: Marc Zyngier , Daniel Lezcano , Sudeep Holla , x86@kernel.org, linux-kernel@vger.kernel.org Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <175883598912.709179.92952336985246107.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the timers/clocksource branch of = tip: Commit-ID: 4e9bfe6969a768ef40c669fd100c9be70fb78a1f Gitweb: https://git.kernel.org/tip/4e9bfe6969a768ef40c669fd100c9be70= fb78a1f Author: Marc Zyngier AuthorDate: Thu, 14 Aug 2025 16:46:22 +01:00 Committer: Daniel Lezcano CommitterDate: Tue, 23 Sep 2025 12:32:08 +02:00 clocksource/drivers/arm_arch_timer_mmio: Add MMIO clocksource The MMIO driver can also double as a clocksource, something that was missing in its previous incarnation. Add it for completeness. Signed-off-by: Marc Zyngier Signed-off-by: Daniel Lezcano Tested-by: Sudeep Holla Reviewed-by: Sudeep Holla Link: https://lore.kernel.org/r/20250814154622.10193-5-maz@kernel.org --- drivers/clocksource/arm_arch_timer_mmio.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/clocksource/arm_arch_timer_mmio.c b/drivers/clocksourc= e/arm_arch_timer_mmio.c index 3522d1d..ebe1987 100644 --- a/drivers/clocksource/arm_arch_timer_mmio.c +++ b/drivers/clocksource/arm_arch_timer_mmio.c @@ -45,6 +45,7 @@ enum arch_timer_access { =20 struct arch_timer { struct clock_event_device evt; + struct clocksource cs; struct arch_timer_mem *gt_block; void __iomem *base; enum arch_timer_access access; @@ -52,6 +53,7 @@ struct arch_timer { }; =20 #define evt_to_arch_timer(e) container_of(e, struct arch_timer, evt) +#define cs_to_arch_timer(c) container_of(c, struct arch_timer, cs) =20 static void arch_timer_mmio_write(struct arch_timer *timer, enum arch_timer_reg reg, u64 val) @@ -128,6 +130,13 @@ static noinstr u64 arch_counter_mmio_get_cnt(struct ar= ch_timer *t) return ((u64) cnt_hi << 32) | cnt_lo; } =20 +static u64 arch_mmio_counter_read(struct clocksource *cs) +{ + struct arch_timer *at =3D cs_to_arch_timer(cs); + + return arch_counter_mmio_get_cnt(at); +} + static int arch_timer_mmio_shutdown(struct clock_event_device *clk) { struct arch_timer *at =3D evt_to_arch_timer(clk); @@ -256,6 +265,16 @@ static void arch_timer_mmio_setup(struct arch_timer *a= t, int irq) (unsigned long)CLOCKSOURCE_MASK(56)); =20 enable_irq(at->evt.irq); + + at->cs =3D (struct clocksource) { + .name =3D "arch_mmio_counter", + .rating =3D 300, + .read =3D arch_mmio_counter_read, + .mask =3D CLOCKSOURCE_MASK(56), + .flags =3D CLOCK_SOURCE_IS_CONTINUOUS, + }; + + clocksource_register_hz(&at->cs, at->rate); } =20 static int arch_timer_mmio_frame_register(struct platform_device *pdev,