From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6DCD227462; Wed, 7 May 2025 04:33:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746592404; cv=none; b=gv7coMZMObERCirWP06HxCf8S9kbbpIIoWUOII6FIQgEyDfCEgbDbdetStAwwgkpYI6EzROlc7p9hG7IurKgIVRzJMFDmIPEWJfNqWLd7zfK2SmEWUUUIX5E6boJ3ra2dxDzsxaFQ2xUkZx/jHW1gJ4UgVkFLdWFed7gKYOg8GA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746592404; c=relaxed/simple; bh=UfPnWqBya3kFZ9NZiwbbuUngo0dnzOI306GmpSV8f4U=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Mocu+ceDSnHWdyJFwwh4gOzrAWWHyVSpwr1KVCAivci7LE7+awbC2qqMRhyDfcvVroFZJLaOZUBZb6elNT0DDrfaHOtxgjwhV3RbHxbGSl93kuFZf4kctPHFRNDCx1kQ+MqjvZ3V3DtjJ7F4ssPgmz0y1UAsgqjLcJ9YhHc+N2o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KurKwqZV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KurKwqZV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF449C4CEE7; Wed, 7 May 2025 04:33:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746592403; bh=UfPnWqBya3kFZ9NZiwbbuUngo0dnzOI306GmpSV8f4U=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=KurKwqZV87OBpQqz04T4z9YR/nUdqQ/k5V8BgAS0DsESMGroRolOcPkWxwp3Phoqi TDC1k36AvbFXS3PEKtO9DUzrONpgM1TS+CGV80xloHh8JPDSY0ypJYuz5qSBXURfJi cSaJehlKb/vmI4ASTF693K0gvSjU1cB9XtHGWiZSvWjGFqEXRQuT5ID/WLNUycjLmW 9DULG7hz+PBPqxBeFDK+zTzGe0h6YUu/9wNGiUPNbp/o1IGYW9dIKRCMEvlhwQqYJ3 DgGLuG6P6x6XFISHEuvfdgTDPIE04TunSlsT7PwxiqR5pVcRhiBz1F8spBeUDrUAyX O7vy/XoAzYl9g== Message-ID: Date: Wed, 7 May 2025 06:33:20 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/3] clocksource/drivers/timer-vt8500: Add watchdog functionality To: Alexey Charkov , Daniel Lezcano , Thomas Gleixner , Rob Herring , Conor Dooley Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20250507-vt8500-timer-updates-v1-0-6b76f7f340a6@gmail.com> <20250507-vt8500-timer-updates-v1-2-6b76f7f340a6@gmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 06/05/2025 22:06, Alexey Charkov wrote: > VIA/WonderMedia system timer IP can generate a watchdog reset when its > clocksource counter matches the value in the match register 0 and > watchdog function is enabled. For this to work, obvously the clock event > device must use a different match register (1~3) and respective interrupt. > > Check if at least two interrupts are provided by the device tree, then use > match register 1 for system clock events and match register 0 for watchdog > respectively. > > Signed-off-by: Alexey Charkov > --- > drivers/clocksource/Kconfig | 6 +++- > drivers/clocksource/timer-vt8500.c | 58 ++++++++++++++++++++++++++++++++++---- > 2 files changed, 58 insertions(+), 6 deletions(-) > > diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig > index 487c8525996724fbf9c6e9726dabb478d86513b9..e4f9aade058af1adc279274c6c711658f9f4cd0a 100644 > --- a/drivers/clocksource/Kconfig > +++ b/drivers/clocksource/Kconfig > @@ -177,9 +177,13 @@ config TEGRA186_TIMER > > config VT8500_TIMER > bool "VT8500 timer driver" if COMPILE_TEST > + depends on ARCH_VT8500 || COMPILE_TEST Does not look related to this patch. > depends on HAS_IOMEM > + select WATCHDOG Drivers are not supposed to select user-visible symbols. Best regards, Krzysztof