From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (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 EA51A18C025; Tue, 10 Sep 2024 10:12:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725963149; cv=none; b=qx73bwDp97rkqtyPQt8aKis8aYz3emcYlF0NPy0KmazbuhltgbrCDxnNL/2NFx63/hUKlBCnmAZ+LHd9xwg4qwZwjjGNONZ4+GUKswWGHWn0Re97zIYhMqeqm00ajo2FYajuVAYqV+i+oM3eYPNeuaY+7EUsC+Lm2hAxfGxlUj8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725963149; c=relaxed/simple; bh=VyYakeR5q2gj2qCC9iwfxK5M8Ob6MBmeAoDuJlw+zSg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=RXots3vcg0qxdCTtBtvsG5xS1lIRJ9OB/Mh0xKNBxMPJgWCApVHOjy9tK/nUSlUebduJW3CAKi+rapPcbGu3iVmVCjSUhPvu3qFPlCB7R3GMdmblXa9euMAU/HdEuQ61f6CLNTCUx1CHVZwxdzU/PpM8KZo0mHlpLv2utn/ALu8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=CVGrpJIB; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="CVGrpJIB" Received: from [192.168.88.20] (91-156-87-48.elisa-laajakaista.fi [91.156.87.48]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id A6D1C3EA; Tue, 10 Sep 2024 12:11:08 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1725963069; bh=VyYakeR5q2gj2qCC9iwfxK5M8Ob6MBmeAoDuJlw+zSg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=CVGrpJIB6XCBH84LYK5iU1wsM3+QPJhhjFAMTxNWZ3Nrr3F+9mc294RDyiQHpp64Q 7kvf2LAJH91n0OGjslx+U/ZFTK9BvErzdy4LZ95v8q+18rZ8As/Q0/GLycvZUar6is QxML5QenW8o6E5A4sLKJs+NxxwPZu73VmOYUWoFA= Message-ID: <5fe23378-901d-4b5e-a8a6-c0cccca74b70@ideasonboard.com> Date: Tue, 10 Sep 2024 13:12:22 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 3/4] media: raspberrypi: Add support for RP1-CFE To: Laurent Pinchart , Sakari Ailus Cc: Jacopo Mondi , Mauro Carvalho Chehab , Raspberry Pi Kernel Maintenance , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Broadcom internal kernel review list , oe-kbuild-all@lists.linux.dev, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Naushir Patuck , Kieran Bingham , kernel test robot References: <763b3147-d7cb-44a7-b73b-8f7f4fd622ab@ideasonboard.com> <20240909134516.GA9448@pendragon.ideasonboard.com> <6u2g4v4ktt543sy5jlp3vonemhzhrwyz2liikg6jb2kx3h7jao@z6s233clqwqk> <20240910100608.GC6996@pendragon.ideasonboard.com> Content-Language: en-US From: Tomi Valkeinen Autocrypt: addr=tomi.valkeinen@ideasonboard.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/09/2024 13:06, Laurent Pinchart wrote: >>> Unrelated, but I am wrong the driver core calls pm_request_idle() on >>> the just probed device ? Does this mean drivers doesn't have to do >>> that by themseleves ? (it's not a big deal, as request_idle() doesn't >>> change the usage counter) >> >> Seems like that. This could be omitted from drivers then. > > Is that guaranteed, or is it an implementation detail that could change > at any time ? The runtime_pm.rst says: > It may be desirable to suspend the device once ->probe() has finished. > Therefore the driver core uses the asynchronous pm_request_idle() to submit a > request to execute the subsystem-level idle callback for the device at that > time. A driver that makes use of the runtime autosuspend feature may want to > update the last busy mark before returning from ->probe(). But I can't find any mention of the dependencies (parent, suppliers) being powered up automatically for probe. Tomi