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 8837D33E7; Mon, 28 Jul 2025 12:23:22 +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=1753705402; cv=none; b=Bnir8WFFDepdGApf3ZLBUMb4yai1oCzPCa4e7awFJEpPF36gOpOIopKyet4XVn3SADIZYSFOf+OiqJJoo9dX47w/shb633tO/StrrqPmmuuPASqn2ESAkN58ZFOm1VtS9pAir+UmQwYQDgoR21TIE640X+1xVwOGYTh+39Vtdac= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753705402; c=relaxed/simple; bh=Tsr9NQwfI4BCS/zuCTheVTv/aPg7pxX9MjHV1UIW+lQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=qPk+dE71eRcamMx5hebB40gFB5JwAPgFOKXyWv7DXTp8yKDKjBU/Q+2hOclvs7lhulHP3nVUkZ0BiKrdisjUPBKvfAjEpVqZGWIA9CxRwGCPdF0y1WtDnd92VgWmZX8kUlKgRj0Zv9TSMjbFVFlM/64K4dWBNby1Hd242jA3WxA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=o/2x0i2N; 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="o/2x0i2N" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 19226C4CEE7; Mon, 28 Jul 2025 12:23:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753705402; bh=Tsr9NQwfI4BCS/zuCTheVTv/aPg7pxX9MjHV1UIW+lQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=o/2x0i2NTgs//HPCdOS9icimooS4gH00SGpVx2b6NbCwVa/f+vTpHzzpvDy3MeS/r BoYDMqkXBDnCXUQG/b/ViEUQlC1fhHbKrOvTxL26XvanJdqyYPTst22MWvtlEBZm23 vxkVDBGASfuTbiF9rZOqdXNpdp+AANLs5CQHuvA1nIdhKyVZETH80JRoaf9wfWlWpI eYQ51BF0UnPmO+sWsVjAXVPpRRk6qJyeHhCvU4zKwkyoelngtpkGqFPwvAxvebtUXK xbDFo2qK6rUwv1qf+FgJVfGdFDswA7FUjvvUR8hCqVkrWPuhauCvAfgWe+4h8GGN8t FpQTp/2IiJBbw== Message-ID: <2a39c0ab-edd4-402c-95a0-a6286f03102a@kernel.org> Date: Mon, 28 Jul 2025 14:23:14 +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 v13 07/10] firmware: psci: Implement vendor-specific resets as reboot-mode To: Dmitry Baryshkov Cc: Shivendra Pratap , Bartosz Golaszewski , Bjorn Andersson , Sebastian Reichel , Rob Herring , Sudeep Holla , Souvik Chakravarty , Krzysztof Kozlowski , Conor Dooley , Andy Yan , Mark Rutland , Lorenzo Pieralisi , Arnd Bergmann , Konrad Dybcio , cros-qcom-dts-watchers@chromium.org, Vinod Koul , Catalin Marinas , Will Deacon , Florian Fainelli , Mukesh Ojha , Stephen Boyd , Andre Draszik , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Elliot Berman , Srinivas Kandagatla References: <20250727-arm-psci-system_reset2-vendor-reboots-v13-0-6b8d23315898@oss.qualcomm.com> <20250727-arm-psci-system_reset2-vendor-reboots-v13-7-6b8d23315898@oss.qualcomm.com> <3gtlf5txxtioa5bvo6o467jupyoam4hjhm2mdiw5izv5vbl3tz@drndgp3tcrgo> <5e2caeb7-360a-4590-a36f-ff1ec4c20d31@oss.qualcomm.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 28/07/2025 14:03, Dmitry Baryshkov wrote: >> >>> and the reboot-mode is defined in the >>> previous patch. So, I'd assume, the path is defined. >> >> As I said, path is not. only psci/reboot-mode is. > > Do we have an _actual_ use case where PSCI node is not at at root node? Yes, many cases, because it belongs as well to firmware node. > If not, it's obviously a deficiency of the schema. Could you please > provide suggestions on how to describe that in DT schema? I do not see deficiency. There is no ABI that psci must be root node, so there is no issue to fix there. If you want to add such ABI, I will answer: no, don't, because we do not want paths or node names to be the ABI. Compatible is the ABI. Best regards, Krzysztof