From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 91C1FCD5BA0 for ; Thu, 5 Sep 2024 09:18:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=VLKaWTzNmAG9l6fdjIkgmRzkZ3gJxomFgubJhMBJvoE=; b=DE4sLP2WW/oyKvPfnyrB+4CHIo 38RX88Yn3Xx8kmZFfBP/XxAbvX1WRkuEwbE+SbXo0fSajLWrk6hFXK98ax5w00tyBUj2V8Uq4QZSX 2NbrDe7DCEyzQh7u5enVaspjSfYZ/pOy4ofG+oIgoMYSQ8bYBb+ZZ9HJ2hwNHYWgdYe1VPTbfrrPY o78yZFalCiEvtN8gQdSGVz1MLwHkj+N+09jE7mjW5VAD2E4U0utgLGeb098bSla+Yi8ZDp9O5TMm9 X+uXRG2LYr/7oVrPcoOsXajmophz2MP31/WlPKfQFnDteb5uT9fVDU3HFWrmuBjumQ2TjZYAH3PZq jBY/epRQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sm8cw-00000007jYJ-2CJT; Thu, 05 Sep 2024 09:18:06 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sm8ar-00000007ieA-2sQ1 for linux-arm-kernel@lists.infradead.org; Thu, 05 Sep 2024 09:15:59 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 705275C0FF2; Thu, 5 Sep 2024 09:15:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9011C4CEC3; Thu, 5 Sep 2024 09:15:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725527756; bh=owCjoukPHHtiQVYXFzUhx/MhWIIu5KPW4x1maYmWDP4=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=RfVd6OQU8/7zPoumOnFIZ6AdLwnsZxfrdVsMw4uRgo2gOJMvHHR/cv3TphVLcIj70 1wcIhlfJyD2n06JDPSEyYMn7GsqNxPwpqhPIKt1gZGaXcCxt2CvBZrGTo5NmFCoVUO bTL11ZxvIjWRu9LWf5VTsXQQQ1PGUrDIR/ufUonGyctjdpwiawY2NUjg22pOxzVESF NG7fn/1fKiB4VphevEe9mkxtOwii9MfpfiHbnZaHXn4C3wEoRtmTA/nWdP0/Qa0M8n oZ/jyK0WedVMi6KmPpC7sv95gUcvwRAqwC7/xi5yGBLHbVb/VY5pQoT/YGAadJSyxs QAMxLu3DAd6xw== Message-ID: Date: Thu, 5 Sep 2024 11:15:49 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/6] dt-bindings: ti, sci: Add property for partial-io-wakeup-sources To: Markus Schneider-Pargmann Cc: Nishanth Menon , Tero Kristo , Santosh Shilimkar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vignesh Raghavendra , Vibhore Vardhan , Kevin Hilman , Dhruva Gole , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240729080101.3859701-1-msp@baylibre.com> <20240729080101.3859701-2-msp@baylibre.com> <44feed5a-95a7-4baa-b17e-514c0f50dae6@kernel.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240905_021557_966539_ACAACEFF X-CRM114-Status: GOOD ( 16.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 05/09/2024 11:08, Markus Schneider-Pargmann wrote: > On Tue, Aug 06, 2024 at 10:03:00AM GMT, Krzysztof Kozlowski wrote: >> On 06/08/2024 09:11, Markus Schneider-Pargmann wrote: >>> Hi Krzysztof, >>> >>> On Tue, Aug 06, 2024 at 08:18:01AM GMT, Krzysztof Kozlowski wrote: >>>> On 29/07/2024 10:00, Markus Schneider-Pargmann wrote: >>>>> Partial-IO is a very low power mode in which nearly everything is >>>>> powered off. Only pins of a few hardware units are kept sensitive and >>>>> are capable to wakeup the SoC. The device nodes are marked as >>>>> 'wakeup-source' but so are a lot of other device nodes as well that are >>>>> not able to do a wakeup from Partial-IO. This creates the need to >>>>> describe the device nodes that are capable of wakeup from Partial-IO. >>>>> >>>>> This patch adds a property with a list of these nodes defining which >>>>> devices can be used as wakeup sources in Partial-IO. >>>>> >>>> >>>>
>>>> This is a friendly reminder during the review process. >>>> >>>> It seems my or other reviewer's previous comments were not fully >>>> addressed. Maybe the feedback got lost between the quotes, maybe you >>>> just forgot to apply it. Please go back to the previous discussion and >>>> either implement all requested changes or keep discussing them. >>>> >>>> Thank you. >>>>
>>> >>> I tried to address your comment from last version by explaining more >>> thoroughly what the binding is for as it seemed that my previous >>> explanation wasn't really good. >>> >>> You are suggesting to use 'wakeup-source' exclusively. Unfortunately >>> wakeup-source is a boolean property which covers two states. I have at >>> least three states I need to describe: >>> >>> - wakeup-source for suspend to memory and other low power modes >>> - wakeup-source for Partial-IO >>> - no wakeup-source >> >> Maybe we need generic property or maybe custom TI would be fine, but in >> any case - whether device is wakeup and what sort of wakeup it is, is a >> property of the device. > > To continue on this, I currently only know of this Partial-IO mode that > would require a special flag like this. So I think a custom TI property > would work. For example a bool property like > > ti,partial-io-wakeup-source; > > in the device nodes for which it is relevant? This would be in addition > to the 'wakeup-source' property. Rather oneOf. I don't think having two properties in a node brings any more information. I would suggest finding one more user of this and making the wakeup-source an enum - either string or integer with defines in a header. Best regards, Krzysztof