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 F066AE937E3 for ; Sun, 12 Apr 2026 13:32:38 +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:From:References:Cc:To: 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=5s/toNcYEsWsfc7qjlGSvr0eu3Eq2MqGMPYTmHqN6xc=; b=vSW0gBmwxgdE1s divAZ2oPP5O/FHcaAPEiCPZx7sQ/mrZW5W1yjBWh+ZFa4BdKvZ+v5JIuGtEZqngn7JWELemXWJk4T 2CPY8kEL+Eto9n74rfPZdVHWxZZadwsIKTumNy5Yr+pZNrIwQ/BU+SwPloYS+zgwgaWx1GBFaoqZT /beWbBpI+OeWfbSw2GW6iQLgwucf+Cr6qaDpdskO13OIeIYl9Ql8354DyARMUghh9JhjEuscULsm0 P2muI0y2Vy0F90uEuhfeS+lOrxaUbB1lvFASYHoRRA8O+VTU9g2Wcu2Yp1p7+QNTDbEYm6cHzReO4 1KHvMuA0Uykxt66saxhg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBuvW-0000000EL7J-2rIY; Sun, 12 Apr 2026 13:32:38 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBuvT-0000000EL6t-2qPP for linux-i3c@lists.infradead.org; Sun, 12 Apr 2026 13:32:36 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id EDF4940B75; Sun, 12 Apr 2026 13:32:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC47CC19424; Sun, 12 Apr 2026 13:32:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776000754; bh=z6WgQh/ArnAhmplYX1CEz9iRQGLFseHcrBMZ6G2udvw=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=bRd4IcVRz3hgWmVkV1KSgKXtgsgIemwIHlNZ4J4FVRbsSxDEMpiuMZbCJgElm1S5h Bi6VU5tdUVZ4Ubv4xcQW6jKBL2HPEl/3WwdrfC0zMuCrgHeCoozOd855htEk4llqIY VQalqIh9VT9rt0QbwMGPi/bgWmafna9saTS+WoiTmXjgyeubGF2q4k9pm17Ac0pQs8 VVIZbDVTxUcax6XaBitQpIev1GO/RPJvFVpkJmM8ZRoUrLtNdGAuMLZMi4PrfVoXY6 FX7x2fgMbQBh45wibFrxEThdvF9QNtaCPck0WXxJpJpEIatmIfR1sNa0sqQzQwO5S5 I682aty4mMOdg== Message-ID: Date: Sun, 12 Apr 2026 15:32:23 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 13/13] arm64: defconfig: Enable I3C and SPD5118 hwmon 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> From: Krzysztof Kozlowski 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 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. Best regards, Krzysztof -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c