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 57E75E937E3 for ; Sun, 12 Apr 2026 13:34:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:References:Cc:To:From: 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=nOYldcsR6icLe8ga9OBGw/8GmLdeoBkPul7WJ4/gaik=; b=jjjtVbMKxqujjb o5o0Qvm2yxiFvOfy1VGNSFTidBuZGW5aMzhSvyrGwztdMGkCMPhE8ZGeJ5S94zCHuheC/I1JSHjhM trrdoG6jdCHi5KlCQHwjFF5ifFSQIKyWq74MQWgl4GnzYcw+TUtKdSH+MYc2eAhY98LomgBOuuR/k a80/8h6N9+Us78cj0r36a1bbJyFERxs57Q7MzRjJRZlePov6aROjuW6Go37iSzsJtDlCrnsAcJ+2P dd6D1IAxrsVeHeVcFMyH918aKrKd5q2tF+IX3k6cxi9U9Q0EhjUnOboNCawPG0QFUtsBNicBmQ/3s 9bePvxh0LmHQfvsrwatg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBuwq-0000000ELAt-0779; Sun, 12 Apr 2026 13:34:00 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBuwo-0000000ELAm-3iVh for linux-i3c@lists.infradead.org; Sun, 12 Apr 2026 13:33:58 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 67AFF60008; Sun, 12 Apr 2026 13:33:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 09FC2C19424; Sun, 12 Apr 2026 13:33:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776000836; bh=scSfjuZM69nzVpL4Q8vryol1tcjFhxl84aCJjNlkw+M=; h=Date:Subject:From:To:Cc:References:In-Reply-To:From; b=sjdnM7yKk3w3+vX3F2/CKZmXC6zvSq3UwtS73XT7Fy0FLrsxD0yS4e0EGI4Ldz212 XPw9knSR7Pm7G1b36XE8RfP87CQOX6e++BTlBcrFx9YQrJ2kjNp1JNAoAoZf4c6K8G izRkdXaUX64ETeTab5Oeg3GAWzdw7MCkt2ZuhlFRD9TJuiGLaYlpwTKs+EvlA17Tra mA94DOPpIkPDnYu9on2AxThuWhgQcz3C4E8vtOlLc5tl2ADLK2lYehQwIa4Nwo0mz/ tO+z6co/14zCoH8doVebQG29y1tTc1FikvQozh2PkzedPvnVUlIkkSZxT9d89UNeYn lCiwMFIRnzbFw== Message-ID: Date: Sun, 12 Apr 2026 15:33:42 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 13/13] arm64: defconfig: Enable I3C and SPD5118 hwmon From: Krzysztof Kozlowski To: Guenter Roeck , Akhil R Cc: Frank.Li@nxp.com, acpica-devel@lists.linux.dev, alexandre.belloni@bootlin.com, conor+dt@kernel.org, devicetree@vger.kernel.org, ebiggers@kernel.org, krzk+dt@kernel.org, lenb@kernel.org, linux-acpi@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, miquel.raynal@bootlin.com, p.zabel@pengutronix.de, rafael@kernel.org, robh@kernel.org, sakari.ailus@linux.intel.com, wsa+renesas@sang-engineering.com References: <5c751739-5044-4d23-9648-8d46dd0945d1@kernel.org> <20260411053433.49655-1-akhilrajeev@nvidia.com> Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org On 12/04/2026 15:32, Krzysztof Kozlowski wrote: > On 11/04/2026 09:20, Guenter Roeck wrote: >> On 4/10/26 22:34, Akhil R wrote: >> [ ... ] >>>>>> And it >>>>>> should bring me clear rule what I can or cannot remove from defconfig, >>>>>> if in 2 years I come and start pruning it from symbols. >>> >>> I am still a little confused on what information would likely accept (and >>> keep) these configs in the defconfig. Would updating the commit message >>> as below work? >>> >>> "These configs enable the support for SPD5118 within the >>> Small-Outline-Compression-Attached Memory Modules (SOCAMM) LPDDR5X found >>> in the NVIDIA Vera CPUs. The Vera CPU uses ACPI and is part of platforms >>> such as Vera Rubin." >>> >> >> It is quite interesting that we argue about SPD5118 which is mandatory in >> DDR5 systems. At the same time, CONFIG_IGB_HWMON, CONFIG_SENSORS_MACSMC_HWMON, >> CONFIG_SENSORS_RASPBERRYPI_HWMON, and CONFIG_RTC_DRV_DS3232_HWMON _are_ >> enabled in arm64:defconfig. CONFIG_IGB_HWMON is even built-in. > > Why CONFIG_SENSORS_MACSMC_HWMON is weird? It is part of the soc using > the defconfig? > > The author here has troubles bringing any arguments why his drivers > should be defconfig and keeps asking what do I want to hear. If one > cannot make an argument why a change is needed, then maybe the change > should not be sent? > > It's the job of the author to convince why the community needs this > change, unless it is obvious, ofc. > >> >> It is kind of difficult to understand why those are more important than >> the temperature sensor on DDR5 modules (or the temperature sensor on DDR4 >> modules, for that matter). > > No one discussed this. I have no clue what is SPD5118 and commit msg did > not explain that. Did not even provide accurate user of that. > >> >> I don't know what the policy for defconfig is, but just based on that it does >> seem to lack consistency. > > No wonder... people write poor commits and send that to upstream. And > when asked "why do we want this" they got stuck. > >> >> A separate question is if it is time to enable I3C in default configurations. >> I'd think so - more and more chip vendors support it, and presumably they would >> not invest in it if there was no demand, but that is just my personal opinion. > > Isn't I3C needed for SPD5118. Otherwise I understand even less from this > rationale - why I3C is being enabled here? > > And before author asks what do I want to here: no, it is author's job to > convince me to accept I3C in defconfig. Not mine. BTW, all this was asked at v1 and author did not improve the commit msg beside giving quite broad/unspecific "Vera". Best regards, Krzysztof -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c