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 BECE9C3DA64 for ; Tue, 6 Aug 2024 06:26:54 +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=W+NJIR2VMF9Dz3dgx8kBSc41rYfK2zyD41GSYfVJxpc=; b=0B8+o/Y574LWwF6fZhbw8/qQ+L updJkOsIyFAJd1HPjaLc1GW5PLDk8DyBY7ubmo/EcP7/2ZoaHo/oWYqVcS1MsO9YlxpXs+EoscljT Cm75S8QCOHR1N8by+x6RiLZxCAnNctkaEcWrfN+Z4Xzbbz55rpr5Va3oMS+rAgHtm7yYqNJYqTVGk b1a6FPBYB4hFZE4F6ifkS2IvEJ+EWL3jYaKHHwuNlwnTjpqJ2f8HxBIqR+Trow8uUzd9oisOR40IE VoAphqXngksl4V2pPVJndrx+caR4QWoeFUdUHKNN7o2ryCqMdCYnmrNO3oyu9j/yp08lMCnXrJ/AD zoYd9A3Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sbDec-00000000fWd-3m7j; Tue, 06 Aug 2024 06:26:42 +0000 Received: from sin.source.kernel.org ([145.40.73.55]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sbDe5-00000000fQV-2iem for linux-arm-kernel@lists.infradead.org; Tue, 06 Aug 2024 06:26:11 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id E1CFECE0D6B; Tue, 6 Aug 2024 06:26:07 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DDC83C32786; Tue, 6 Aug 2024 06:26:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722925567; bh=BjqIFjSGsGg6TzXZZviieEcOrOvVXg+qMsTnamn2JCg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=melHguTNIyGZrnUJaeEVXfoxJLzSFUSmimL7A0qZMciOU+/Tkmk3AgHDTbJ7zOnvW C+Eqg9s2fY38yjFZiW44GJROUQavSLBeCsJ7xaIuPKj+0p6CYTAe1rIbhfeO0FbM6A Vh9hlzCAoDpwj8Y9jmw+z/Byw0ziCXO5T2jzj9KdnHBoaKi+kk0bY6uTX7sWreLKI2 6kaeEB8jY/cO5xnbWVPbPn6j6QGYaZqN2kc9vEVsg2dbw8DuhkIuqipWJd2ztG4NT7 S9G0q7eDOceZWeOSN0YY0fKLFv8md78ztD/hPRNKssZ1/TG0U0hu+ZSRMyrAJ9dIo3 Q+bgSsjClf3Cg== Message-ID: <654f76d5-e4e4-477d-becf-8157792557cc@kernel.org> Date: Tue, 6 Aug 2024 08:26:00 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/6] firmware: ti_sci: Partial-IO support To: Markus Schneider-Pargmann , Nishanth Menon , Tero Kristo , Santosh Shilimkar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vignesh Raghavendra Cc: 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> <20240729080101.3859701-3-msp@baylibre.com> 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-20240805_232610_082800_20B78AB4 X-CRM114-Status: GOOD ( 18.06 ) 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 29/07/2024 10:00, Markus Schneider-Pargmann wrote: > +static int tisci_sys_off_handler(struct sys_off_data *data) > +{ > + struct ti_sci_info *info = data->cb_data; > + int i; > + int ret; > + bool enter_partial_io = false; > + > + for (i = 0; i != info->nr_wakeup_sources; ++i) { > + struct platform_device *pdev = > + of_find_device_by_node(info->wakeup_source_nodes[i]); > + > + if (!pdev) > + continue; > + > + if (device_may_wakeup(&pdev->dev)) { ... > + dev_dbg(info->dev, "%pOFp identified as wakeup source\n", > + info->wakeup_source_nodes[i]); > + enter_partial_io = true; > + } > + } > + > + if (!enter_partial_io) > + return NOTIFY_DONE; > + > + ret = tisci_enter_partial_io(info); > + > + if (ret) { > + dev_err(info->dev, > + "Failed to enter Partial-IO %pe, trying to do an emergency restart\n", > + ERR_PTR(ret)); > + emergency_restart(); > + } > + > + while (1); > + > + return NOTIFY_DONE; > +} > + > /* Description for K2G */ > static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = { > .default_host_id = 2, > @@ -3398,6 +3485,35 @@ static int ti_sci_probe(struct platform_device *pdev) > goto out; > } > > + if (of_property_read_bool(dev->of_node, "ti,partial-io-wakeup-sources")) { > + info->nr_wakeup_sources = > + of_count_phandle_with_args(dev->of_node, > + "ti,partial-io-wakeup-sources", > + NULL); I don't see the point of this. You have quite a static list of devices - just look at your DTS. Then you don't even do anything useful with the phandles you got here. This property looks entirely useless. I already commented on the binding (which you did not respond to), so let's comment also here: No, it duplicates wakeup-source and your code shows that it is not even needed. Best regards, Krzysztof