From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 8BCF2248F72; Wed, 24 Jun 2026 10:45:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782297915; cv=none; b=NejGn/ggT0plxMk2k73WvxIoJb56batlhNsQLclPcowjV2wupG61fX/fQKzZrwIIILs2yVVdcDz/l08Hi4/SaCsUHzzj566cpRaWHh/tWDCmUSgYxB1csxVTQBOH50gKWMl0ZVvvUAQ1kqidFEiNuQ93mCalhTX/oDHQ4xHOnyY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782297915; c=relaxed/simple; bh=XaGb/SA79c6PcWK7LwktAedRBCD8ujPRfuHS8RUj6Sk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=BwwztnRsB3tijCeYg6kTLrOEhFEW1cBiqyfBgGUfhu98FZz0Y9mhLbWociGgWnU652cQhMbrkv2lUVUiQWqVI/hUuOMaiOcWh7mcINL/0JO2rd8oLFShtS3Ky21LKKxlri6P3MXzdLPv0KalbABpfofW50lpKSuKEGSNM/6l+7w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HeuPaigd; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HeuPaigd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A75AC1F000E9; Wed, 24 Jun 2026 10:45:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782297914; bh=wu2eR0uHSA/Hx7sEy3vJrs+t7uD4lxn9SHOEv0q/pAo=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=HeuPaigdlXZc88KhZNv7tCXDTI7C6qd32a+0P9k6scJd5jvtBkwVRbQRzstxfdIKx FjtDuzJBQ/hCMMkVht2LZIZIk8tHqHPCLCScT6fgAkrv3ABIJTWA2ciWWhxXyU8xs4 wHAwM9IZXNiaYBjtVUr6S9xoLFzO4U17v2dOecJCuUshGVDmlwpMp1+S5XGiYdk5jq yKGdVDkrA4RaM3/K8pVxC2XOV+WpPf+evphlh7tfXeqXqit0KOFOmnJXshz/O6tguv SkWR0o0YQQT+FIUPL/dYG7wpPdA7dAk8cHMFJ1KAHmYYEJAlZQMpzr/s74mGcNlBxA nL717bkwXY/6w== Message-ID: Date: Wed, 24 Jun 2026 12:45:07 +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 1/3] dt-bindings: power: limits: Describe Qualcomm SPEL hardware To: Manaf Meethalavalappu Pallikunhi Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , "Rafael J. Wysocki" , Bjorn Andersson , Konrad Dybcio , Daniel Lezcano , Gaurav Kohli , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org References: <20260620-qcom_spel_driver_upstream-v2-0-a3ee6837c18f@oss.qualcomm.com> <20260620-qcom_spel_driver_upstream-v2-1-a3ee6837c18f@oss.qualcomm.com> <20260622-armored-witty-tarantula-84a28a@quoll> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGPBBMBCgA5AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJp2mE8AAoJEBuTQ307QWKbeaIP /ihHTkTW4KsN/DQ945JJbyu5tI0J80Wue7QyyLPglyKfhgb5cLLNPpOC8cCIJsc7+W3i2P38 s2c1cOH6CYGE7E9ur3Vfme8NW2S2I/Z8VC7bZnzyS23wT17LrsdS/qCpx4o8U+pt/xdXDKph EGRYrIEmMpUWvyYzyYKGIe25FtaayIIKpq8eZYyFcp2f/sG5IkOW5uZzHPMPdcm87jU7fyuQ rAU2vx9r+ulUfQ/q9Z2roC/ode3l7t2pN7BCBCsUDp6JCrUyZrtT1e7EbA0ZRP3aOBNk2P2E DQOgJGjGdO5Yx2Y9LFtltu6JbsBJHi1syGRX3AtQYOMc4Y1WGoeZJmMlvKj2ZqqXNkcWi2DS IQEWB0uW6CqFsBBIMGDa+6OzdaVO/uAVXWDWml02Men3CILdI1MbVjoh8ECqYUY7OQ+JJvNN vnliuq5WM3Ghd3jg/LZZrxXjdIginRHFQCjIJYLKpLZWm1/iDFedcfzqRNYmTtqscdCNHW41 oT3Z7BmO9xwdjuwBS6nmS6JJwkbf5Ot2QR4pB/DRU7ZwjT1qHe+9r9gF32wXVQatHNGK/VVu sfwOnkdxCWkp/qb2gdQRmZh+SedStWshigH6sNfuHBloF/q+hjMRc8b2m326OZdrbSHwY1Sz vti8Hn7n8NjdHO9LKB7BIdjkA9DA5WsqOuVCzsFNBFVDXDQBEADNkrQYSREUL4D3Gws46JEo Z9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLueMNsWLJBv BaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6eiOMheesVS 5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wAGldWsRxb f3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA6z6lBZn0 WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9YegxWKvX XHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt91pFzBSO IpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gUBLHFTg2h YnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/JoFzZ4B0 p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu4vXVFBYI GmpyNPYzRm0QPwARAQABwsF2BBgBCgAgAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtBYpsFAmna YUkACgkQG5NDfTtBYptX+BAApg32CkxwNucNEi8WfWA8oKkW0y8YDuY6ORMo9FWNGiT/OTy0 vyJrLocrpn86zwfjVp+eCrssPYh8eqJfnWqmYv6ACQtHPYzPZQ3mSo8H97Z01oUxITzCxpXm ZkLgPIqtDPcC2E3dPM/fVxcyowM8XsaMA9wcsaUYrta8toOq2b9tKcjleKMfMrm0gQ9u7wUc QbLkwj6TCLOwucb07GXzLTNF9PZmaDUpKAZjMjmrW+le+SFvQbhamx0rxLWPR0NWntXpbCn+ +ACch03p/JyTBVktxFsFyCt7pTPE1kEaeuXBTe/a2D9iQvRxRW19LvuO2e59/u1wYUiH/orz wbIC2S4dBsPAPihL3ztOU1yE86GPyQtSE0kU+/7snnLt4QGi6PChf3t5gnNjAzjUUovO8rgI c+5yN5heq5loYHgK6OQ9OlHzsPHO9e9MOQcKlFycs1pyijFGzDwdNUm/SchK8iWT2QApTx4A K9bCVaboTA2T77QYkRcRJYSsO1alGX0ome/hMLD1daXlkrNUp1HWa3K4iytLRXjCSIorWiGs n+q3krnpXu3TFkA8qtOFZMdnIiFuiq1yLT8hptsV5xh1TA2nsVvSYiaCr3q4s4BKjS/KrLDb qoxzw8ISjdUp4pA85vb6YLCmb39NgidD+7PmAr65lBNveIFynTgsja1rRQ4= In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 23/06/2026 11:47, Manaf Meethalavalappu Pallikunhi wrote: > Hi Krzysztof, > > > On 6/22/2026 5:58 PM, Krzysztof Kozlowski wrote: >> On Sat, Jun 20, 2026 at 02:09:08AM +0530, Manaf Meethalavalappu Pallikunhi wrote: >>> The Qualcomm SoC Power and Electrical Limits (SPEL) provides hardware >>> based power monitoring and limiting capabilities for various domains. >>> >>> Add a DeviceTree binding to describe the SPEL block on Qualcomm's SoC. >>> >>> Signed-off-by: Manaf Meethalavalappu Pallikunhi >>> --- >>> .../bindings/power/limits/qcom,spel.yaml | 47 ++++++++++++++++++++++ >>> MAINTAINERS | 6 +++ >>> 2 files changed, 53 insertions(+) >>> >>> diff --git a/Documentation/devicetree/bindings/power/limits/qcom,spel.yaml b/Documentation/devicetree/bindings/power/limits/qcom,spel.yaml >> >> What is "limits" directory for? What sort of class of devices fit there? > > Added for devices that integrate with the powercap framework (exposed > via sys/class/powercap). These devices are responsible for enforcing and That's a driver answer. I asked about class of devices. powercap framework is Linux thing, not a class of devices. Please describe hardware, not Linux frameworks. > monitoring power consumption limits across different domains, such as > the system, SoC, or specific subsystems. Any other better directory ? I don't know what is this hardware doing and commit msg is quite short on explanation. Power monitoring is usually hwmon, but probably this is not a hwmon. Best regards, Krzysztof