From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f48.google.com (mail-wm1-f48.google.com [209.85.128.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 12DBF3368B4 for ; Fri, 17 Apr 2026 13:28:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.48 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776432533; cv=none; b=W5Y33vDqVQjmU4xlxgnrU/nP5w1PronNs+e1lPlmVyeGNADcLYwiH0GOk9C5hPo9vLACJtp3Z4syba7J/PUzTYPQ7OKrv9/vFGYAuUJkxe68dG+Mrj2Xivo6pG09StFbHMiMHMfsE0ZTMZQiAtMOP98zRxZy1PI+ue/LubHZfhg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776432533; c=relaxed/simple; bh=LX0qWu7Xbd8TT1NvBOE97BzH3UzHyHp8aIxB3oRV2iQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Zqtf/yhvUauSPxwlqBypM1WhNyiRF//bk+rX2SWmIKjLSSkxUPQQRONSW2guIQ4/DgBFCRvuXb9Wl8YvTyfoiseve+9+lZHuoOJEZrrkxGbNkrCmeqTCEL3D5TwL2VuEfRy5paLPPToPfd+J7zGkUYx35KR5c3ZWOCSPL08r64U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=fGYXAHpe; arc=none smtp.client-ip=209.85.128.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="fGYXAHpe" Received: by mail-wm1-f48.google.com with SMTP id 5b1f17b1804b1-488b8bc6bc9so4874045e9.3 for ; Fri, 17 Apr 2026 06:28:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1776432530; x=1777037330; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=LiSRutZE2i6BYCdYYnb6mg9P5OvuB1XSyhcSB7iODxI=; b=fGYXAHpe1Soi9YINpIgSZWLTi0aHWdHeqniatQYcxVVGY/osBdF+OfGFMELkn8ZC2S kbqy3Za0da5vNOq0qF8yGzKgvNErTWQExc4GnlG4ODFp2Q0lfKV3WrXLKcE2DUCOkGA5 v69RB/Tzs4dmgp7TGA//CWuCznEqEVu/Nlg7RodmWwBDhRswLkS7t2xJYJMWtFSeNBml MkeCcmqxj4z0sI1JDYEUbAparuCZe4k/tNVGtzp1idM0OWB9qYZWp6me00EqOx41bNTO H+elb4tbHxGNVpAHjyQiWNuHhp4JiUoX/3mQ3Zhs1aqO7LtZlVzEGa6eSqUAd8GeJJLY hodQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776432530; x=1777037330; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=LiSRutZE2i6BYCdYYnb6mg9P5OvuB1XSyhcSB7iODxI=; b=K74g4RnlI9fbqh/et9gqlKuUm3ke2piySwcaHhZd/+wViwXOjOJq5mKxBDk6dmh6jR 8KjiAU0Mhrjw0WevNFN1p97qh1wZBGin7B4fnJw6ZoL6Rm9SzAcjqW2B5ZTuaQ/d5Ayb lKY8STixzwj0YNujnFHIWL5+VPJ0MHSxQS5MFOoTbMJfAYK+KL6r5b0r0eWyQhFEl7eV gzSm6rbSmUqdIr3C3CPYRuUg4zgcq3eb/dXm88KUatIJq4qTfFbxXQPr0tUD7CnxG1k6 Nvpiim+9hqN0m107o7GiVCd009JRVs9DCNT8Mzw4ZjjUgtzL62Fi/dzPrZo1z5TsgMr3 o12w== X-Forwarded-Encrypted: i=1; AFNElJ/CgOc7b/FY2SnIiZPJdIb+2bL/d4K/H2pMc5ia+YP7d12wOBZXcl6XwEwS0t/iquI2VGRrHX/Y1PYuNA8=@vger.kernel.org X-Gm-Message-State: AOJu0YzlgnDlEZsswoH7DYJi6b+Yfao09xuuRRcuwJLNFdfTym66QU78 XDcV5zeHdqvxkn93U1jpy6NSoCqW+rolIFi9ngf77WT98aPYgVL8RPa/gXcNaqieBHM= X-Gm-Gg: AeBDiet001Fpw4t4ifian1ECIPVn/J7b1vfHrEHebPIfD+vflw6mxCdZQds3YgymvE1 MtjosWFSlu56gEGk+jDSWVnGNXflYqoQ5ua6Y3y28CIxTpUVFHJSW9AZfGEerWPhV4tsGjvgV26 +EnsIiRssGnvQZRO8tyyrayBq4q24tgGNCddI09ecXyOwFb2bUiK3U7Uc17PKRv+QZvCWen7BTs pc37UyAoTl47dee6aZp+LgQjlXxysekBnV3VZlVgUY+SA6cNih2dXKLdQWmHoxb+g6UV6LxkKDt jevfGuoyzS36WPihX2/b9ZZU7PmOETSzuAYHyAhvi4PIeVXViEXxiWXQ5hZ64aZfn/8paQn3etJ cUbiAC3eQCIvbIOIKg8nUXR6k1sGHc5T0Ek+0JgWepPya2nA+2BZ8KjKK931zz5rP0DU8GUf2DU ZDJm/9j96zjr5wD/2f23w3A/rC/YN3o/2uw1Hr/nXG2w== X-Received: by 2002:a05:600c:a318:b0:486:fdca:ea8d with SMTP id 5b1f17b1804b1-488fb784662mr31297785e9.25.1776432530464; Fri, 17 Apr 2026 06:28:50 -0700 (PDT) Received: from [10.11.12.108] ([79.115.63.48]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-488fc1c0354sm40049075e9.11.2026.04.17.06.28.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 17 Apr 2026 06:28:50 -0700 (PDT) Message-ID: <3a36821a-4a44-4f3a-9f0d-5ce521b323aa@linaro.org> Date: Fri, 17 Apr 2026 16:28:42 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/7] dt-bindings: thermal: Add Google GS101 TMU To: Alexey Klimov , "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krzysztof Kozlowski , Alim Akhtar , Bartlomiej Zolnierkiewicz , Kees Cook , "Gustavo A. R. Silva" , Peter Griffin , =?UTF-8?Q?Andr=C3=A9_Draszik?= Cc: willmcvicker@google.com, jyescas@google.com, shin.son@samsung.com, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hardening@vger.kernel.org References: <20260119-acpm-tmu-v2-0-e02a834f04c6@linaro.org> <20260119-acpm-tmu-v2-1-e02a834f04c6@linaro.org> Content-Language: en-US From: Tudor Ambarus In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 3/5/26 5:48 AM, Alexey Klimov wrote: > Hi Tudor, > > On Mon Jan 19, 2026 at 12:08 PM GMT, Tudor Ambarus wrote: >> Document the Thermal Management Unit (TMU) found on the Google GS101 SoC. >> >> The GS101 TMU utilizes a hybrid control model shared between the >> Application Processor (AP) and the ACPM (Alive Clock and Power Manager) >> firmware. >> >> While the TMU is a standard memory-mapped IP block, on this platform > > this ^^ > okay cut > Is it Google TMU hardware block or Exynos/Samsung TMU block? > > My understanding at this point is that ACPM interface, ACPM protocols, etc > appeared on Samsung SoCs before gs101 (maybe even before initial SCMI > prototyping). It looks like ACPM firmware, communication via mailboxes, > TMU channel, dealing with TMU behing ACPM, etc are actually a standard > Samsung Exynos architectural feature, rather than a Google-specific > implementation. I can't say though what was the first chipset where it > was implemented. autov920, exynos850 too can use the hybrid ACPM TMU approach. I'll generalize the description. > > Given that this is a Samsung design that predates the gs101, would it > make sense to use more generic name for this binding to reflect that > it is Exynos-derived? That would save us from generalizing things later The name has to match the compatible. We can rename it when other Samsung compatibles are added. Cheers, ta