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 9CE9F33F6; Tue, 6 Aug 2024 06:26:07 +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=1722925567; cv=none; b=YvpgOg0vSvz7a1IsjEZ2VbxOnfDMe0SB388kYJVKTP7HjO8bEeRV/j5bAzYoxlykC5tqMmZzuUYSg2ibbdYxTTgaS/DMRkl3+2AbUXRTdNvU4mYrexv7gNWTOM7I6opvLJrvqg0fRhpyPfojOLu9Nmo3j6cg1yZXr3jKQF5zvG0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722925567; c=relaxed/simple; bh=BjqIFjSGsGg6TzXZZviieEcOrOvVXg+qMsTnamn2JCg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=XXN+I0t4usWQcfzuj7WCQDyu8LscdQMduHbrYt38TjjHANSzjpSJ0iYXLa4Yk9Dj8FCJHIEYYvb8KzyDhtfWnniAf40KQloqqAVBphyIP7mAsnknYWLvyL1gOJJANCNGGdAu56aZlsXKZRXnHPGVGbLSf5+lVj1LYEX99HFrPRk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=melHguTN; 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="melHguTN" 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 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 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 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